CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

TUESDAY, JULY 13, 2021

3:00-3:10 pm Detroit TimeWelcome from ACI Global Moderators Charles Nmai and Tony Nanni

3:10-4:00 pm Quebec Time / 3:10-4:00 pm Detroit Time .............................................................1Co-Host: ACI Quebec and Eastern Ontario Chapter

3:00-4:00 pm Colombia Time / 4:00-5:00 pm Detroit Time .......................................................3Co-Host: ACI Colombia Chapter

4:00-5:00 pm Ecuador Time / 5:00-6:00 pm Detroit Time .........................................................5Co-Host: ACI Ecuador Chapter

5:00-6:00 pm Mexico City Time / 6:00-7:00 pm Detroit Time .................................................... 7Co-Host: ACI Central & Southern Mexico Chapter

5:00-6:00 pm Guatemala City Time / 7:00-8:00 pm Detroit Time .............................................9Co-Host: Instituto del Cemento y del Concreto de Guatemala (ICCG)

5:00-6:00 pm Hermosillo Time / 8:00-9:00 pm Detroit Time .................................................... 11Co-Host: ACI Northwest Mexico Chapter

WEDNESDAY, JULY 14, 2021

1:00-2:00 pm Auckland Time / 9:00-10:00 pm Detroit Time .................................................... 13Co-Host: Concrete NZ Learned Society (New Zealand)

Noon-1:00 pm Sydney Time / 10:00-11:00 pm Detroit Time ...................................................... 15Co-Host: Concrete Institute of Australia (CIA)

Noon-1:00 pm Tokyo Time / 11:00 pm-Midnight Detroit Time ...................................................17Co-Host: Japan Concrete Institute (JCI)

1:00-2:00 pm Seoul Time / Midnight-1:00 am Detroit Time ...................................................... 19Co-Host: Korea Concrete Institute (KCI)

1:00-2:00 pm Shanghai Time / 1:00-2:00 am Detroit Time ....................................................... 21Co-Host: ACI China Chapter

2:00-3:00 pm Singapore Time / 2:00-3:00 am Detroit Time ....................................................23Co-Host: ACI Singapore Chapter

2:00-3:00 pm Bangkok Time / 3:00-4:00 am Detroit Time ......................................................25Co-Host: Thailand Concrete Association (TCA)

1:30-2:30 pm Mumbai Time / 4:00-5:00 am Detroit Time .........................................................27Co-Host: ACI India Chapter

1:00-2:00 pm Dubai Time / 5:00-6:00 am Detroit Time ............................................................29Co-Host: ACI UAE Chapter

1:00-2:00 pm Baghdad Time / 6:00-7:00 am Detroit Time ....................................................... 31Co-Host: ACI Iraq Chapter

1:00-2:00 pm Alexandria Time / 7:00-8:00 am Detroit Time ....................................................33Co-Host: ACI Egypt Chapter

2:00-3:00 pm Rome Time / 8:00-9:00 am Detroit Time ............................................................35Co-Host: ACI Italy Chapter

3:00-4:00 pm Lausanne Time / 9:00-10:00 am Detroit Time ...................................................37Co-Host: Fédération internationale du béton (fib)

4:00-5:00 pm Oslo Time / 10:00-11:00 am Detroit Time ...........................................................39Co-Host: Norwegian Concrete Association (NCA)

5:00-6:00 pm Madrid Time / 11:00 am-Noon Detroit Time ....................................................... 41Co-Host: Asociación Española de Ingeniería Estructural (ACHE)

5:00-6:00 pm London Time / Noon-1:00 pm Detroit Time ........................................................43Co-Host: Institute of Concrete Technology (ICT)

2:00-3:00 pm Sao Paulo Time / 1:00-2:00 pm Detroit Time .....................................................45Co-Host: Instituto Brasileiro do Concreto (IBRACON)

2:00-2:50 pm Santiago Time / 2:00-2:50 pm Detroit Time.......................................................47Co-Host: Instituto Chileno del Cemento y del Hormigón (ICH)

2:50-3:00 pm Detroit TimeClosing remarks from ACI Global Moderators Charles Nmai and Tony Nanni

24 HOURS OF CONCRETE KNOWLEDGE

ACI Global Moderators

Charles Nmai, ACI Vice President, Master Builders Solutions US LLC

Antonio Nanni, ACI Vice President, University of Miami

CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Tuesday, July 133:10-4:00 pm Quebec Time / 3:10-4:00 pm Detroit Time

Co-Host Organization: ACI Quebec and Eastern Ontario Chapter

Website: http://www.aciquebec.com

Local Moderator: Pierre-Luc Fecteau, Eng MSc, President of the ACI Quebec and Eastern Ontario Chapter

Pierre-Luc Fecteau holds a BEng in geological engineering from Université Laval, Québec, QC, Canada. Before beginning his master’s degree in 2009 and joining GHD in 2011, Fecteau worked as a Civil Engineering Technician in materials quality control for 4 months for Groupe Qualitas Inc. His MSc and ongoing PhD studies, both from Université Laval, led him to specialize in the evaluation of concrete affected by alkali-aggregate reaction (AAR, both alkali-silica reaction and alkali-carbonate reaction) through Federal Highway Administration (FHWA, USA)-sponsored research projects. He was then hired by GHD and acted as a team leader of four professionals and

two technicians, Project Manager, and Petrographer, specializing in various concrete and other materials (including rock characterization). In addition, Fecteau was the supervising specialist for all AAR testing for GHD and the lead Petrographer in Quebec. Since April 2019, he has served as a Research Associate at Université Laval, where he supervises and coordinates the work of the Research Chair NRCC – RBQ and Partners “Impact of Pyrrhotite on the Durability of Concrete Structure,” jointly led by Professors Josée Duchesne and Benoit Fournier, both from the Geology and Geological Engineering Department.

Fecteau is President of the Board of Directors of the ACI Quebec and Eastern Ontario Chapter; a member of ACI Committee 221, Aggregates for Concrete; Member of the Ordre des ingénieurs du Québec (OIQ), former Vice-President and Director of the Quebec City affiliated sub-chapter of ICRI (Quebec Province chapter), and former invited collaborator to the CSA subcommittee on aggregates for concrete of CSA A23.1-A23.2.

1st Speaker: Eric Samson, Eng, PhD, VP of Engineering, SIMCO Technologies Inc.Dr. Eric Samson is the VP of Engineering at SIMCO Technologies Inc. He specializes in concrete durability and the prediction of the degradation of concrete structures exposed to aggressive environments. He actively worked on the development of STADIUM® software and other engineering tools related to concrete durability. Samson has participated, as principal author or coauthor, in the writing of over 60 scientific papers in the field of service-life prediction of concrete structures. He currently supervises a research team of engineers and scientific researchers dedicated to the development of the STADIUM® software and the extension of its

features. He was also involved in several major engineering projects related to concrete durability.

Co-Author: Richard Cantin, Concrete Durability Subject Matter Expert and Project DirectorRichard Cantin is a concrete durability subject-matter expert and Project Director for SIMCO Technologies. He has over 20 years of experience managing large-scale infrastructure projects, conducting inspections, and condition assessments. He specializes in the characterization of damaged concrete infrastructure and

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service-life evaluations. His advanced knowledge of SIMCO’s STADIUM® numerical modeling tool, combined with his extensive knowledge of degradation mechanisms and repair techniques, allow him to identify optimal solutions to extend the useful life of concrete structures while minimizing total intervention costs. Cantin is an active member of ACI and the Association for Materials Protection and Performance (AMPP) technical committees including durability of concrete, service life, evaluation, repair and rehabilitation, and corrosion of metals in concrete.

Presentation Title: Optimizing the Value of Field Data for Concrete Structure Durability AnalysesField data are routinely collected on concrete structures to better understand the durability of the material in relation to its environment. Field data are a good indicator of the current state of a structure. In an era of unprecedented expenses to rehabilitate existing structures, they provide relatively low-cost information to assess damage and degradation sustained by concrete, compared to a large-scale coring program. However, they can also prove complex to analyze. The objective of the presentation is to highlight the benefit of combining field data to other information, such as modeling solutions and data collected on a small number of cores. One typical example is the information provided by half-cell potential measurements. Although guidelines are provided in standards to make sense of potential data collected on structures, they can prove challenging to analyze in some cases. The presentation shows how the combination with modeling can help evaluate the extent of corrosion of reinforcing bars better and thus better assess a structure’s current condition.

2nd Speaker: Benoit Fournier, Eng, PhD, Professor, Department of Geology and Engineering Geology, Laval University

Dr. Benoit Fournier is a Professor in the Department of Geology and Engineering Geology at Université Laval, Québec, QC, Canada, since 2007, where he received his PhD in 1993. From 1990 to 2007, he worked as a Research Scientist and Manager for the Advanced Concrete Technology Program of CANMET, Department of Natural Resources in Ottawa, ON, Canada. Fournier is currently Chair of the CSA technical subcommittee on aggregate’s reaction in concrete. In addition, he is the Director of the Quebec’s Research Centre on Concrete Infrastructures (CRIB). Fournier’s main research interests are in the various aspects of aggregates technology,

recycling and sustainable development in concrete construction, and the durability of concrete, especially issues related to deleterious aggregates reactions in concrete (for example, alkali-aggregate reaction, oxidation in sulfide-bearing aggregates, frost-susceptible aggregates). He currently co-chairs the NRCC—RBQ partnership research chair on the impact of pyrrhotite on the durability of concrete structures in Canada.

Presentation Title: Standardization Efforts for Testing Procedures to Evaluate Potential Reactivity in Sulfide-Bearing AggregatesIn the Trois-Rivières area (Québec, Canada), several hundred private houses, apartments, and public buildings were built using concrete, incorporating an anorthositic gabbro coarse aggregate containing sulfide minerals. Many concrete structures developed serious deterioration within 3 to 5 years after their construction, resulting from the oxidation of the sulfide minerals, notably pyrrhotite and internal sulfate attack. This reaction triggered, in many cases, the demolition/replacement of the affected structures.

A research and development program sponsored by the governments of Canada and Quebec was launched in early 2019 and is carried out by the National Research Council of Canada, Laval University, and Ryerson University, with collaboration from the Geological Survey of Canada and the CSA Group. The project aims to better understand the mechanisms involved in this deleterious reaction and develop recommendations for potential standardization of a performance testing approach for sulfide-bearing aggregates. This presentation summarizes the most recent developments in this major research and development program.

Tuesday, July 13, 3:10-4:00 pm Quebec Time / 3:10-4:00 pm Detroit TimeCo-Host Organization: ACI Quebec and Eastern Ontario Chapter

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Tuesday, July 133:00-4:00 pm Colombia Time / 4:00-5:00 pm Detroit Time

Co-Host Organization: ACI Colombia Chapter

Seccional Colombiana

Website: http://www.acicolombia.org.co/

Local Moderator: Gonzalo E. Gallo, PhD, Director de la División de Estructuras Hidráulicas y Líneas de Transmisión, INGETEC, Colombia

Dr. Gonzalo E. Gallo received his degree in civil engineering in Ecuador and then his master’s degree and PhD from the University of Illinois at Urbana-Champaign, Champaign, IL, USA. Currently, he is the Head of the Structural Division at INGETEC, a design and consulting firm with over 70 years of experience in infrastructure projects. Gallo is a highly motivated engineer with a strong background in pathology, nondestructive testing, design, and repair of concrete. His work includes projects with the Panama Canal, water treatment plants, powerhouses, and trans mission lines. In addition, he has vast experience in the design of gravity dams in Latin

America, India, and Turkey. His other passions include quality and continuous education, programs which he leads internally within his group.

1st Speaker: Carlos A. Arteta, Associate Professor, Universidad del NorteCarlos A. Arteta is an Associate Professor of civil engineering at Universidad del Norte, Barranquilla, Colombia. He is a member of ACI Committee 318, Structural Concrete Building Code. In addition, he serves on ACI Subcommittee 318-H, Seismic Provisions, is the founding President of the Colombian Earthquake Engineering Research Network (CEER), and is a member of the Board of Directors of the ACI Colombia Chapter and the Colombian Association of Earthquake Engineering. His research interests include response and design of buildings to earthquake actions, with expertise in analysis, design, and risk evaluation of reinforced

concrete structural systems.

Presentation Title: Compressive Strain Capacity Model for Reinforced Concrete Boundary ElementsThis work curates and analyzes a database of experimental results of 50 rectangular reinforced concrete (RC) prisms representative of the boundary element of structural walls. The attention is focused on the compression portion of the load-displacement curves to develop a model for estimating the average and localized compressive strain capacity, along with its fracture energy. The results serve the structural engineering community to better understand the impact of the longitudinal and transverse reinforcement layouts of wall boundary elements on their deformation capacity.

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2nd Speaker: German Hermida, PhD, Director Técnico, Cemex, ColombiaGerman Hermida has served as the Director of the CEMEX Colombia Technical Department since 2014; is “ENSC” 2008 Paris, DEA “Ecole National des Ponts et Chausses,” and is a Professor of engineering at the Colombian Engineering University. His research interests include low-cement-paste concrete, concrete shrinkage, chemical admixtures, coal combustion residual (CCR) waves analysis, and the study of concrete’s rheological properties. He was a consultant for CCR and concrete-face rockfill dams (CFRD).

Presentation Title: Shrinkage Concrete, A Multivariable AnalysisShrinkage-reducing admixtures work in the interior of the porous net in concrete and cement paste. These admixtures are based on glycols, and though their dosage is expressed as a percentage of cement content, their performance depends on several factors. On the other hand, cement paste volume plays the main role in total drying shrinkage. Still, this parameter is only taken into account by a minority of current shrinkage models and only in terms of water content. However, the obtained data have demonstrated a better correlation between drying shrinkage and cement paste volume.

This research focuses on the impact cement paste volume has on long-term total drying shrinkage (12 years) and determining the relation between shrinkage-reducing admixture performance and cement paste volume.

In the case of self-consolidating concrete (SCC), the significant amount of cement paste increases the drying shrinkage long term and can be a weak point of this kind of concrete; nevertheless, shrinkage-reducing admixtures have a higher effect in conventional concrete and can balance this trend.

Tuesday, July 13, 3:00-4:00 pm Colombia Time / 4:00-5:00 pm Detroit TimeCo-Host Organization: ACI Colombia Chapter

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Tuesday, July 134:00-5:00 pm Ecuador Time / 5:00-6:00 pm Detroit Time

Co-Host Organization: Ecuador Chapter

Ecuador ChapterAmerican Concrete Institute

Website: https://www.concrete.org/chapters/findachapter/chapterhome.aspx?cid=C0C04700

Local Moderator: Guillermo Loayza, CEO, Setmix ProductsGuillermo Loayza is an Industrial Engineer with over 20 years of experience in offering comprehensive solutions for mixing, repairing, reinforcing, and protecting concrete. He is currently the CEO at Setmix Products, which has businesses in Ecuador, Colombia, Panama, Peru, and Bolivia. Loayza specialized in Protective Coatings by SSPC and served as President of the Ecuadorian Chapters for both the Society for Protective Coatings (SSPC) and ACI, and currently serves as the President of the SSPC Latin American Advisory Council. He is an active member of several committees on concrete repair and protection within both organizations.

1st Speaker: Pablo Andrade, CEO, UNICON, EcuadorPablo Andrade studied construction engineering at the Universidad San Francisco de Quito, Quito, Ecuador. Since 1997, he has held numerous positions, including Plant Manager, Technical Manager, and his current position of General Manager at Quarry Cymca Guayllabamba; Head of Infrastructure at Sico y Sicocar Guayaquil; Technical Manager and General Manager at Batch Plant Mezclalista S.A. Proyecto Nuevo Aeropuerto de Quito; as well as Operations Manager and his current role of General Manager at Unicon Ecuador Batch Plant. His main projects include the New Quito International Airport (2007-2012); the New Chiche y San Pedro Bridge (2013-2014);

the Centro Comercial el Portal Pouring Record of Concrete in a Day (2018-2019); and the Acutalidad Highest Building in Quito Level +135m and 33 Floors (2020).

Presentation Title: Problems and Solutions with High-Strength Concrete in Quito at 2800 Meters Above Sea LevelThe topic will be deepened in the foundry of the IQON Building, the highest in Quito, Ecuador, which will reach a level higher than 135 m, and its difficulties and variables that must be taken into account for its execution.

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2nd Speaker: Diego Paredes, Civil Engineer and Structural SpecialistDiego Paredes is an Engineer who can analyze and design structural building systems and infrastructure to carry out planning and construction by following current standards and specifications provided for each project. With good management of interpersonal and communication tools, he can make members of a team productive. Paredes is concerned about the events that affect us daily. This includes how to take advantage of the administrative tools for resolving problems encountered in engineering and in a company’s day-to-day practices.

Presentation Title: Change of Structures Use—A Specific CaseThroughout time, people have built different types of structures: houses, buildings, bridges, infrastructure works, and so on, and on many occasions, after some time has passed, people have decided to change the use of those constructions. When deciding to change the use of any construction, some considerations should be considered, including a study of new load conditions, a study of the surrounding soil, and a study of the current state of the structure and its possible reinforcement. On this occasion, a special case of use will be studied: the change of an underground warehouse for dry materials in a water reservoir. The previous works that were carried out and their results will be analyzed, and the final solution recommended to the project owners will be discussed.

Tuesday, July 13, 4:00-5:00 pm Ecuador Time / 5:00-6:00 pm Detroit TimeCo-Host Organization: Ecuador Chapter

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Tuesday, July 135:00-6:00 pm Mexico City Time / 6:00-7:00 pm Detroit Time

Co-Host Organization: Central & Southern Mexico Chapter

Sección Centro y Sur de México

Siempre Avanzando

Website: https://acimexico-centro.org/

Local Moderator: José Alfredo Rodríguez Campos, Innovation ManagerJosé Alfredo Rodríguez Campos is a Graduate of the Faculty of Civil Engineering of the Autonomous University of Nuevo León, San Nicolas de los Garza, Mexico. Rodríguez Campos studied development of business executives (Anáhuac University), sustainable design and construction (Ibero-American University), and management competencies program (ICAMI), and is an active member of ACI.

In 1997, Rodríguez Campos worked in the Concrete Technology Department of the Civil Engi-neering Institute of the Autonomous University of Nuevo León, working in research, academia,

and community service. In 2000, he joined the company Concretos Apasco (today Holcim México) and held various positions in the technical activities of the group. He has presented at various conferences and seminars related to the technology of concrete, cement, and sustainable construction in Mexico and Latin America.

As Innovation Manager, he is responsible for the development of new products and their implementation in the Mexican market and the transfer of developments to the operations of the LafargeHolcim Group in Latin America. The processes under his responsibility are the Center for Technological Innovation for Construction (CiTeC) of Holcim Mexico, Research and Development, Technical Services, Standardization, Relationship, Technical Training, Specialized Laboratories, and Mobile Laboratories. In 2016, he received the Award of Excellence, a distinction awarded to him by the ACI Northeast Mexico Chapter for the work carried out in favor of the knowledge of concrete and cement technology in Mexico. He is a member of the advisory council of the Faculty of Civil Engineering of the Autonomous University of Nuevo León as of 2019. In addition, he is part of the Board of Directors XXIV (2019-2021) of the ACI Central & Southern Mexico Chapter, serving as Director of Student Chapters.

1st Speaker: Alma Luisa Reyes Zamorano, President of the ACI Central & Southern Mexico Chapter

Alma Luisa Reyes Zamorano is a Civil Engineer who graduated with honors from the National Autonomous University of Mexico, Mexico City, Mexico. She also received her MSCE from the University of Sherbrooke, Sherbrooke, QC, Canada, where she received the Leonardo da Vinci Merit Medal. She is considered an international specialist on concrete and cement advanced technology, high performance, microstructure, pathology, and repair and durability of concrete structures, with a broad experience in the development, implementation, and specifications of avant-garde technologies in the United States, Canada, Mexico, and Latin America. She is

currently in charge of the consultancy activities of AURAC Consulting & Construction. Reyes Zamorano actively participates in various Mexican construction-related organizations and international ACI Committees, such as 212, Chemical Admixtures; 223, Shrinkage-Compensating Concrete; 237, Self-Consolidating Concrete;

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and 544, Fiber-Reinforced Concrete. She has also participated with ACI in the Construction Liaison Committee and the selection of awards for outstanding papers and young professionals. She is the current President of the ACI Central & Southern Mexico Chapter, Vice President of Technology Development of the National Precast and Prestressed Association of Mexico, and Secretary for the Mexican Society of Structural Engineering.

Presentation Title: Durable Concrete in MexicoThe importance of durability has been thoroughly demonstrated over decades in research and practice. It has definitively gained a deserved relevance in private and government projects. The specifications in Mexico are evolving to include additional durability requirements. Also, it is worth noting that the Building Code and the government instances are in the process of inclusion of a concrete durability approach. The experience on durable concrete in Mexico is shared in this presentation.

2nd Speaker: Sergio Manuel Alcocer Martínez de Castro, Professor, Institute of Engineering of the National Autonomous University of Mexico

Dr. Sergio M. Alcocer received his BSc in civil engineering with honors from the National Autonomous University of Mexico, Mexico City, Mexico, and his PhD in structures from the University of Texas at Austin, Austin, TX, USA. He is a Distinguished Alumni of the Cockrell School of Engineering at the University of Texas at Austin. In 2017, Alcocer was awarded an Honorary Degree of Doctor of Science from the University of Arizona, Tucson, AZ, USA. In 2019, Alcocer received the Charles S. Whitney Medal from ACI. He is a Professor at the Institute of Engineering of the National Autonomous University of Mexico. He is a member of the Advisory

Committee on Structural Safety of the Mexico City Government. He has chaired the subcommittees on masonry structures and peer-review of structures; he currently leads the subcommittees on concrete structures and evaluation and rehabilitation of existing structures. He also presides the Scientific Advisory Committee for Structural Safety and Resilience in Mexico City. Alcocer was the first foreign member of the Earthquake Engineering Research Institute (EERI) Board of Directors, Chair of the International Activities Committee, lecturer of the Shah Family Fund Lecture Series, and founding member of the board EERI-IAEE World Housing Encyclopedia. Alcocer is a member of ACI Committees 318, Structural Concrete Building Code; 369, Seismic Repair and Rehabilitation; 374, Performance-Based Seismic Design of Concrete Buildings; and Joint ACI-ASCE Committees 352, Joints and Connections in Monolithic Concrete Structures, and 445, Shear and Torsion. He was Chair of ACI Committee 374 and Secretary of ACI Committee 352. Alcocer was a member of the editorial board of Earthquake Engineering and Structural Dynamics. Alcocer is a Foreign Member of the U.S. National Academy of Engineering, Past-President and Honorary Member of the Mexican Society of Structural Engineering (SMIE), and Fellow and Past-President of the Academy of Engineering of Mexico. His research and teaching interests include the behavior of masonry and concrete structures, seismic design of buildings and bridges, seismic evaluation and rehabilitation of structures, disaster prevention, and infrastructure development. He has authored or coauthored over 180 refereed and conference papers, books, and book chapters.

Presentation Title: ACI in Mexico and Latin America—Possible Futures ACI guides and standards are well respected and widely used in Mexico and other Latin American countries. Since its establishment in 1904, ACI codes have been a reference for the development of concrete standards in the region. Recently, some countries have opted to adopt ACI codes and standards with minor or no modifications. Some others have maintained their preference for ACI codes while including developments based on their own research programs. The region has experienced distinctly different economic growth rates, which makes it a very heterogeneous block; however, one common aspect among all countries is the need for new buildings and infrastructure while maintaining and upgrading the existing ones. During the conference, experiences on the use of ACI guides, codes, and standards in the region, and in Mexico, in particular, will be highlighted. A reflection on the importance of Latin America for the future of ACI and its activities and products will be made.

Tuesday, July 13, 5:00-6:00 pm Mexico City Time / 6:00-7:00 pm Detroit TimeCo-Host Organization: Central & Southern Mexico Chapter

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Tuesday, July 135:00-6:00 pm Guatemala City Time / 7:00-8:00 pm Detroit Time

Co-Host Organization: Instituto del Cemento y del Concreto de Guatemala (ICCG)

Website: https://www.iccg.org.gt/

Local Moderator: Xiomara Sapón-Roldán, Training and Outreach Manager, Cement and Concrete Institute from Guatemala (ICCG)

Xiomara Sapón-Roldán studied civil engineering and received her master’s degree in industrial management. She is currently the Training and Outreach Manager at Cement and Concrete Institute from Guatemala, ICCG, as well as the ACI Guatemala Chapter Secretary, Head of the Guatemala Local Sponsoring Group, and Coordinator of the National Standardization Technical Committees of Cement and Concrete.

1st Speaker: Luis Alberto Velásquez Coronado, Investigation and Development Center Manager of Cementos Progreso

Luis Alberto Velásquez Coronado is the Investigation and Development Center Manager at Cementos Progreso and formerly served as Analyst and Head of Unified Lab, Instituto de Nutrición de Centro América y Panamá (INCAP) (1986-1992); the QC Manager at Cementos Progreso S.A. San Miguel Plant, Guatemala (1992-2007); the Systems and Quality Director at the San Miguel Plant (2007-2012); and the Cement R&D Manager at Cementos Progreso (2012-2013). He received his BS in chemistry from the Universidad de San Carlos, Guatemala City, Guatemala; his MSc in re-engineering and quality assurance technologies from Universidad Galileo,

Guatemala City, Guatemala; and his postgrad in business engineering from Universidad Galileo. He is an active member of Colegio de Farmacéuticos y Químicos de Guatemala; the International Cement

Microscopy Association (ICMA); the Guatemalan Astronomy Association (AGA); the Guatemalan Institute of Cement & Concrete (ICCG); President of Latin American Association of Quality Control, Pathology and Recovery of Construction (ALCONPAT) Guatemalan Chapter; and a member of ACI and RILEM since 2018.

Presentation Title: Industrial Trials of LC3 Cement in Guatemala: Ready Mixed ResultsIn November 2018, an industrial production of 168 metric tons of limestone calcined clay cement (LC3) was made in the La Pedrera Plant in Guatemala City. The project, led by the R&D team, used a local source of kaolin clay calcined in a rotary dryer using 100% biomass. All measures were taken to assure a proper kaolin de-hydroxylation, controlling the process by X-ray diffraction and thermogravimetric analysis. LC3 cement was produced in a ball mill with a 48% clinker content, 30% calcined clay, 17% limestone, and 5% gypsum. This cement was used to produce ready mixed concrete with a content of 290 kg/m3, a typical amount of cement in concrete mixtures in the country. For comparative purposes, slabs with both conventional concrete and LC3 concrete were constructed. Results from industrial concrete showed lower compressive strengths than laboratory mixtures. Still, a good level of strength is achieved at 28 days, representing savings in cement content that can significantly reduce its carbon footprint. Outstanding durability test results are being obtained so far.

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2nd Speaker: Plinio Estuardo Herrera Rodas, Concrete Research & Development Manager, Cementos Progreso

Plinio Estuardo Herrera Rodas is a Concrete Research & Development Manager at Cementos Progreso. He is a member of ACI Committees 130, Sustainability of Concrete; 211, Proportioning Concrete Mixtures; 225, Hydraulic Cements; 237, Self-Consolidating Concrete; and E701, Materials for Concrete Construction; and ACI Subcommittees 130-G, Education on Sustainability, and C601-E, Concrete Construction Sustainability Assessor. He also serves as the Vice President of the ACI Guatemala Chapter and is a member of ASTM International, serving on Committees 01, Cement; 09, Concrete and Concrete Aggregates; and Subcommittees 1.10, 1.11, 9.43, 9.45, and 9.49.

He is a member of the House Committee – Federación Interamericana del Cemento (FICEM). Herrera Rodas received his MBA from Pontifical Catholic University of Chile, Santiago, Chile, and studied civil engineering at San Carlos University, Guatemala City, Guatemala.

Presentation Title: Opportunities for Technological Innovation in the Concrete Industry, due to the COVID-19 Pandemic—the Guatemalan ExperienceThe pandemic has hit us hard, especially the construction industry and the ready mixed concrete industry. To promote the safe and sound operation of the ready mixed industry under pandemic conditions, actions had to be taken, including the exploration of new technology—technology that probably, without the pandemic, might not have been sought or tested. In this presentation, we will be able to appreciate the actions taken to promote the production and delivery of concrete in a safer way, which means keeping social distancing, among other things. At the same time, this disaster has contributed to reinforcing the continuity of the development of new products, solutions, and building systems that, even though they were being explored before the pandemic, received further interest, such as the development of alternative cements or new building systems including 3-D printing. In short, COVID-19 has harmed the construction and ready mixed concrete industry in Guatemala. Still, with the appropriate actions, we have made a comeback, and COVID-19 has been an accelerator that has opened our eyes to new ways of doing things.

Tuesday, July 13, 5:00-6:00 pm Guatemala City Time / 7:00-8:00 pm Detroit TimeCo-Host Organization: Instituto del Cemento y del Concreto de Guatemala (ICCG)

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Tuesday, July 135:00-6:00 pm Hermosillo Time / 8:00-9:00 pm Detroit Time

Co-Host Organization: Northwest Mexico Chapter

Website: http://aci-mexico-nw.org/

Local Moderator: Arturo Gaytan Covarrubias, Sustainability and Innovation ManagerArturo Gaytan Covarrubias is a Civil Engineer with over 17 years of experience at CEMEX, where he has served in various positions. He is certified as a LEED Green Associate and Sustainability Professional ENVISION from the Institute for Sustainable Infrastructure. At ISO, he coordinates the Construction Sustainability Committee and the Concrete and Concrete Structures Environ-mental Management Committee. He is the Mexican delegate on the Ministry of Economy for APEC for Sustainability in Construction. He received his master’s degree in engineering with a specialty in quality and productivity from the Tecnológico de Monterrey, Monterrey, Mexico.

He was President of the ACI Student Chapter of the Universidad Nacional Autónoma de México (UNAM), where he obtained several international awards, and founder of the Concrete Canoes Team at UNAM in 2001. He was also President of the ACI Central and Southern Mexico Chapter from 2013-2014 and the Founder of the ACI Northwest and Southeast Chapters in Mexico. He is currently President of the Mexican Institute of Sustainable Concrete (IMCS), of which he is also the founder. Likewise, he is Treasurer of the Mexican Association of the Ready-Mix Concrete Industry (AMIC). He has received recognition from the IEC Inter -national Electrotechnical Commission as a Young Professional in Australia and the ACI Young Member for Professional Achievement Award. In 2018, he was made a Fellow of ACI and received the Chapter Award for his activities throughout Mexico.

1st Speaker: Genaro Salinas, Independent Concrete Construction ConsultantGenaro Salinas is an Independent Concrete Construction Consultant with over 60 years of experience in concrete construction. He is an ACI Certification Examiner, an ACI Northwest Mexico Chapter Officer, and a member of 13 ACI technical committees, including ACI Committee 223, Shrinkage-Compensating Concrete. He also was named an ACI Fellow in 2016, an ACI Honor-ary Member in 2020, and was given the ACI International Certification Award in 2019.

Presentation Title: Large-Dimension Industrial Floor SlabsThis presentation is about figuring out what we want to accomplish, by knowing how to create the proper mixture design for the job, and determining the proper measures in the construction practice to achieve that goal.

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2nd Speaker: Roberto Stark, President of Stark + OrtizRoberto Stark, FACI, is the President of Stark + Ortiz, S.C., a consulting firm based in Mexico City, Mexico, which provides structural design services for urban and infrastructure projects through -out Mexico, Peru, Panama, Colombia, and Guatemala.

He is a member of ACI Committee 318, Structural Concrete Building Code, and ACI Subcommittee 318-L, International Liasion. He also serves on ACI Committees 369, Seismic Repair and Rehab-ilitation, and 374, Performance-Based Seismic Design of Concrete Buildings. He was a member of the ACI Board of Direction for the term 2015-2018.

Since 1979, Stark has been a Professor at the National University of Mexico (UNAM), Mexico City, Mexico, and was Head of the Graduate Department of Structural Engineering from 1988 to 1992. He has given seminars on different topics related to concrete and seismic design in Brazil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Nicaragua, Peru, Spain, and the United States. He received the Gabino Barreda Medal for the highest Academic Achievement in 1981. He received the ACI Charles S. Whitney Medal in 2018. He received the ACI Design Award in 2019. He served as the Mexican delegate on ISO-TC 71 from 2005 to 2012.

He received his BS in civil engineering from UNAM in 1981 and his MS and PhD from the University of Illinois at Urbana-Champaign, Urbana, IL, USA, in 1983 and 1988, respectively.

Presentation Title: The Influence of ACI in Projects in Mexico and LatinoamericaACI has been a great influence in many of the aspects of the design and construction of concrete structures in Mexico and Latinoamerica in general. The history started in the early 1950s, in that time with few participants. With the great effort that ACI has put forth in recent years to participate more actively in the international environment, this influence has increased rapidly and more robustly. Nowadays, ACI is in almost all aspects of design and construction in all of Latinoamerica, even though some countries used to use European codes and practices. In this talk, I will discuss how ACI has been a great advantage, and give examples of application through different projects. The collaboration between different countries has strengthened the good use of concrete.

Tuesday, July 13, 5:00-6:00 pm Hermosillo Time / 8:00-9:00 pm Detroit TimeCo-Host Organization: Northwest Mexico Chapter

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:00-2:00 pm Auckland Time / 9:00-10:00 pm Detroit Time

Co-Host Organization: Concrete NZ Learned Society (New Zealand)

Website: https://concretenz.org.nz/page/learned_society_home

Local Moderator: Nicholas Brooke, President, Compusoft Engineering LimitedNicholas Brooke is a Consulting Engineer and Principal at Compusoft Engineering, having previously lectured in the Department of Civil & Environmental Engineering at the University of Auckland, Auckland, New Zealand. He has broad experience in analysis, design, and research related to reinforced concrete, including having extensive involvement in assessing earthquake-damaged structures in Christchurch and Wellington.

Brooke is widely involved in the New Zealand structural engineering community, being President of the Concrete New Zealand Learned Society, Vice President of the New Zealand

Structural Engineering Society (SESOC), and a member of several ongoing research projects, including the FEMA-funded ATC 145 project. He is also a frequent presenter of industry seminars and a contributor to committees to develop New Zealand Standards and assessment guidance.

First Speaker: Ken Elwood, Professor of Structural Engineering, The University of Auckland Ken Elwood serves as the Associate Director of QuakeCoRE: New Zealand Centre for Earthquake Resilience, a multi-institution Centre of Research Excellence funded by the New Zealand Government.

Elwood joined the University of Auckland in July 2014 after 11 years on faculty at the Univer-sity of British Columbia, Vancouver, BC, Canada. He was drawn to New Zealand to pursue the numerous opportunities for research and implementation in earthquake risk reduction. He is actively involved in research related to the seismic response of existing concrete and masonry

buildings and post-earthquake recovery.Elwood received his BASc from the University of British Columbia in 1993; his MS from the University

of Illinois at Urbana-Champaign, Champaign, IL, USA, in 1995; and his PhD in civil engineering from the University of California, Berkeley, Berkeley, CA, USA, in 2002. He has served as a member of several international code committees and currently sits on ACI Committee 318, Structural Concrete Building Code. He has also chaired a committee for the New Zealand government to set guidelines for the seismic assessment of buildings with precast floors.

Presentation Title: Hollow-Core Floors in Earthquakes—Assessment and RetrofitPast research has indicated that precast concrete hollow-core floors in buildings are susceptible to non-ductile failure modes when subjected to earthquake deformations. Damage to buildings containing hollow-core f loors in Wellington, New Zealand, during the 2016 Kaikoura Earthquake prompted the need to understand better the behavior of hollow-core floors and enable those with limited drift capacity to be retrofitted or replaced. This presentation will summarize provisions in the New Zealand Seismic Assessment Guidelines capturing three potential failure modes for hollow-core floors: loss of seating, positive moment failure, and negative moment failure. Ongoing research in New Zealand on retrofit approaches for hollow-core floors will also be discussed.

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Wednesday, July 14, 1:00-2:00 pm Auckland Time / 9:00-10:00 pm Detroit TimeCo-Host Organization: Concrete NZ Learned Society (New Zealand)

Second Speaker: Tim Shannon, Technical Director, Lewis Bradford Consulting EngineersTim Shannon is Technical Director of Lewis Bradford Consulting Engineers, a specialist structural engineering practice located in Christchurch, New Zealand.

Shannon graduated from the University of Canterbury, Christchurch, New Zealand, in 2000. He worked in New Zealand as a structural engineer for 5 years before he ventured overseas, where he worked in Australia, Ireland, the United Kingdom, and on large-scale projects in Dubai, UAE. In February 2011, he decided it was time to return home to New Zealand.

While traveling from the northern hemisphere to his hometown of Christchurch, he learned of the catastrophic events unfolding in Christchurch. At 12:51 pm on February 22, 2011, a shallow and violent magnitude 6.3 earthquake had rocked Christchurch, collapsing or partially collapsing a large number of buildings in the Christchurch central business district. The earthquake had wide-ranging effects on the Christchurch cityscape, with many buildings damaged beyond repair. The scars of the February 22 earthquake are still very evident today. The devastating effects of the earthquake on Christchurch reignited Shannon’s passion for seismic design, and in particular low-damage seismic design for more resilient structures.

Shannon was project director for the structural design of the award-winning Tūranga—the new Central Library located in Cathedral Square, Christchurch. Tūranga was awarded the Structural Engineering Society (New Zealand) Supreme Award (2019), the IStructE Award for Structures in Extreme Conditions (2019), New Zealand Earthquake Engineering Society Seismic Resilience Award to Achieve Low Damage, and the New Zealand Property Council Supreme Award (2019).

Presentation Title: Tūranga Library Christchurch—Concrete Innovations to Achieve Low-Damage Seismic DesignLewis Bradford Consulting Engineers carried out the award-winning structural engineering design of Tūranga for the Christchurch City Council as part of a SouthBase Construction design-build team.

Tūranga was constructed to very stringent seismic performance criteria and is designed to sustain minimal structural damage during a large earthquake thanks to an integrated, self-centering mechanism that allows the building to sway and then return to its original position.

The seismic force-resisting system consists of large “hybrid” precast concrete wall panels arranged into three column-wall-column cores. This arrangement allows the concrete walls to rock without damaging peripheral structure, isolating the building from peak earthquake accelerations during a significant seismic event.

The term “hybrid” reflects that each rocking wall has a combination of hysteretic damping provided by steel UFP plates and mild steel dissipaters, and a total system recentering force provided by high-strength unbonded post-tensioned tendons. In addition, each hybrid wall has seismic energy-absorbing devices called High Force to Volume Lead Dampers (HF2V) located in the higher movement regions of the walls to enhance seismic damping further.

The large concrete shear walls were constructed as tilt-up panels, and several of these panels weighed over 150 tons and were up to 25 m tall. The final installation of the panels was near perfect, with panels cast and erected to extremely accurate construction tolerances.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 1412:00-1:00 pm Sydney Time / 10:00-11:00 pm Detroit Time

Co-Host Organization: Concrete Institute of Australia (CIA)

Website: https://www.concreteinstitute.com.au/Home

Local Moderator: David Millar, Chief Executive Officer, Concrete Institute of AustraliaDavid Millar is the Chief Executive Officer of the Concrete Institute of Australia. As a civil engineering graduate from the University of Sydney, Sydney, Australia, Millar began his career in the concrete aggregates industry before expanding into precast concrete, construction chemicals, and concrete materials. With a great appreciation of what industry and professional associations can provide to the concrete industry, Millar has been, and is still, an active member on a number of concrete-related committees as a volunteer. Since commencing his current role with the Concrete Institute of Australia in 2014, he has been directly involved in the organization

of the Institute’s biennial conferences in 2015, 2017, and 2019, bringing international groups to Australia; participating in numerous overseas conventions; and taking a leading role with the International Federation of Structural Concrete’s Congress held in Melbourne, Australia, in 2018. He is currently working towards the Concrete Institute of Australia’s first virtual conference in September this year, with the theme “Smart and Innovative Concrete from Disruption.”

Millar’s 25+ years in the construction industry have revolved entirely around concrete. Through this experience, he understands the importance that this most traditional but ever-evolving material has on society and the environment.

First Speaker: Shan Kumar, National President, Concrete Institute of AustraliaShan Kumar is a Senior Structural and Innovation Engineer in Melbourne and has over 40 years of experience working on a range of building and infrastructure projects. His major involvement has been with high-rise commercial, residential, sports venues, and industrial projects in reinforced and prestressed concrete and steel structures. Kumar led the Hickory Building System (HBS) innovation team responsible for designing and constructing a number of high-rise buildings, including National Award-winning project 45-story student accommodation, and CTBUH award winner 60-story Collins House (fourth slimmest tower in the world). With his

previous job, Kumar worked with Connell Wagner and Aurecon for more than 20 years. He was involved with a number of iconic Melbourne projects such as Crown Casino, Eureka tower, and Marvel Stadium. Kumar is a Professorial Fellow at Swinburne University, Melbourne, Australia; a visiting lecturer and honorary Fellow at the University of Melbourne, Melbourne, Australia, since 2001; and the current National President of the Concrete Institute of Australia. He was honored as one of the most innovative engineers in 2017 by the Institution of Australia for his involvement with the La Trobe tower in Melbourne, Australia. He has also been awarded the most prestigious award for a structural engineer, “The John Connell Gold Medal Award for 2019,” by the structural college of the Institution of Engineers Australia.

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Wednesday, July 14, 12:00-1:00 pm Sydney Time / 10:00-11:00 pm Detroit TimeCo-Host Organization: Concrete Institute of Australia (CIA)

Presentation Title: Innovations in Prefabricated Concrete ConstructionConcrete construction has met challenges and hurdles with in-place construction methods. Contractors and builders have developed innovative (smart) construction techniques to overcome these challenges and hurdles. This presentation discusses how the innovative prefabricated and in-place concrete structural elements of HBS have enabled the construction of an award-winning 44-level La-Trobe tower apartment building, a 45-level student accommodation building, and the 60-level Collins House building in Melbourne. In an Australian first, these buildings were manufactured offsite in prefabricated sections, then transported to the construction site and assembled. This HBS application is one of the first examples of an integrated, prefabricated structural system, which differs from more common, penalized modular systems and is more comparable to conventional cast-in-place construction systems.

Second Speaker: Rodney Paull, Technical Director & Durability Consultant— Materials Technology, GHD

Rodney Paull has 40+ years of experience in the durability of new and investigation/upgrade of existing civil and building structures. Paull spent 19 years in Southeast Asia/Hong Kong managing Taywood Engineering offices; the United Kingdom for 1 year; and the last 18+ years in Australia with GHD. Paull is Chair of the CIA Durability Technical Committee, developing and publishing the Z7 Durability Recommended Practices (includes CIA Z7/01 Durability Planning); a past/present member of Australian Standards, reviewing concrete durability in AS 3600, Concrete Structures, and AS 5100.5, Bridge Design Concrete; a CIA liaison member of ACI

Committees 201, Durability of Concrete, and 321, Concrete Durability Code; a member of fib (the Federation for Structural Concrete) Committees developing fib Model Code 2020, giving input on formal durability planning; and a member of the International Advisory Board (review) for the English version of the Chinese Civil Engineering Society Technical Guide for Durability of Concrete Structures (CCES01).

Presentation Title: International Update on Formal Durability Planning in Design, Construction, and Operational MaintenanceA durability philosophy applied throughout project design and delivery processes will contribute to achieving the sustainable design objectives, achieve capital investment optimization, and lower the risk of unexpected or early deterioration/damage and, through appropriate design, execution, and life-cycle management and care measures, help to achieve the asset owner’s intended design life/extended design life and the desired functionality.

Durability is a worldwide concern, and the need for change has long been identified in many inter-national and national technical documents. However, the missing element has been formal durability planning to coordinate and appropriately implement available durability-related technical knowledge. CIA Z7-01, Durability Planning, is a Recommended Practice report forming part of the CIA Concrete Durability Series, Concrete Institute of Australia (CIA), Sydney, 2014.

In many instances, durability design is not formalized and, as a result, there are poorly defined durability outcomes and no designated durability expert (refer to “durability consultant” defined in CIA Z7/01). This situation is unsatisfactory. Formalized durability planning recognizes the need for expert durability input into the design and life-cycle management of concrete structures/constructed assets. The durability consultant, who is not intended to be an isolated audit entity, is integrated within the project team, the asset owner, designer, contractor, and through-life with the structure maintainer. Many international projects have successfully used durability planning, and CIA Z7/01 gives examples of Australian projects commonly using formal durability planning.

fib Model Code 2020 (drafting in progress) is considering formal durability planning for the first time. ACI formed Committee 321, Concrete Durability Code, in 2020. Others such as CCES are updating guides for the durability of concrete structures.

The presentation will provide an overview of formal durability planning with “why” and benefits for all parties.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 1412:00-1:00 pm Tokyo Time / 11:00 pm-12:00 am Detroit Time

Co-Host Organization: Japan Concrete Institute (JCI)

Website: http://www.jci-net.or.jp/index-e.shtml

Local Moderator: Mitsuyoshi Akiyama, Professor, Waseda UniversityDr. Mitsuyoshi Akiyama is a Professor in the Department of Civil and Environmental Engineering at Waseda University, Tokyo, Japan. He was an Assistant and Associate Professor of Civil Engi-neering at Tohoku University, Sendai, Japan, from 1998 to 2011, before joining Waseda University in 2011.

In 2001, he received his PhD in civil engineering from Tohoku University. He was a Visiting Research Associate at Lehigh University, Bethlehem, PA, USA, from October 2008 to September 2009 and from August 2018 to September 2019 in the research group of Professor Frangopol.

He is Managing Editor of the peer-reviewed international journal Structure and Infrastructure Engineering and an Editorial Board member of ASCE’s Journal of Bridge Engineering and Structural Safety. He has published research papers on the life-cycle performance of concrete structures, application of probabilistic concepts and methods to the design and assessment of concrete structures, earthquake engineering, and safety and reliability in structural engineering. Akiyama is a member of JCI, ACI, ASCE, IABSE, IABMAS, and IALCCE.

First Speaker: Ippei Maruyama, Professor, Nagoya UniversityIppei Maruyama is a Professor of environmental studies at Nagoya University, Nagoya, Japan, and a Professor of engineering at the University of Tokyo, Tokyo, Japan. He is a materials scientist and concrete engineer, currently serving as a lead researcher of several national projects, namely studying: soundness evaluation of concrete structures exposing to neutron and gamma-ray irradiation; enhancement of soundness evaluation procedures of concrete structures in nuclear power plants using data of harvested materials from decommissioning plants; evaluation of concrete contamination of radioactive materials in Fukushima-Daiichi nuclear power plants; and

impacts of drying on cement-based materials from the atomic scale to structural scale. In addition, he is Editor-in-Chief of the Journal of Advanced Concrete Technology published by Japan Concrete Institute. His research interests include advancing understanding of the relationships between microstructure, chemistry, and properties of cementitious materials and the performance of concrete structures.

Presentation Title: Impact of Drying on Structural Performance of Reinforced Concrete MembersStructural performance of concrete members continuously changes due to concrete components’ chemical and physical reactions in each environment. For the long-term use of concrete structures, such aging phenomena should be understood and controlled. However, the most common environment—drying—is still not fully understood. Here, the drying impacts on the concrete structures are discussed from a multi-scale viewpoint. Experimental evidence of structural performance changes of a shear reinforced concrete wall and beams connecting to slabs due to drying is introduced and explained by examining the roles of concrete components.

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Wednesday, July 14, 12:00-1:00 pm Tokyo Time / 11:00 pm-12:00 am Detroit TimeCo-Host Organization: Japan Concrete Institute (JCI)

Second Speaker: Toshiharu Kishi, Professor, Institute of Industrial Science, University of TokyoDr. Toshiharu Kishi is a Professor in the Institute of Industrial Science and the Department of Human and Social Systems (Civil Engineering) at the University of Tokyo, Tokyo, Japan. He currently serves as the Vice President of the University of Tokyo and served as the Director-General of the Institute of Industrial Science from 2018 to 2021. He is a member of the Japan Society of Civil Engineers (JSCE); Japan Concrete Institute; Architectural Institute of Japan (AIJ); The Society of Materials Science, Japan (JSMS); The Society of Rheology, Japan (SRJ); Asian Concrete Federation (ACF); ACI; and the International Union of Laboratories and Experts in

Construction Materials, Systems and Structures (RILEM). Kishi received his BS, MS, and PhD in civil engi-neering from the University of Tokyo.

Presentation Title: Durability Design Method Considering Reinforcement Corrosion due to Water PenetrationA durability design method for reinforced concrete considering carbonation progress estimates that dry concrete experiences higher corrosion risk; however, in actual concrete structures, higher corrosion is observed in wet concrete. To solve this contradiction, a durability design method considering water penetration was proposed, in which the reinforcement is assumed to be corroded by contact with water. The reinforcement corrosion depth is calculated as the accumulation of the stepwise corrosion. To calculate the number of annual contacts of water with the reinforcement, an equation to calculate the annual frequency of precipitation and a coefficient to consider the effect of the water supply conditions were established. The comparison of the proposed method with an existing carbonation verification method indicates that the proposed method reflects the situation of an actual concrete structure more appropriately. The proposed durability design method was incorporated in the Standard Specifications for Concrete Structures of the Japan Society of Civil Engineers in 2017.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:00-2:00 pm Seoul Time / 12:00 am-1:00 am Detroit Time

Co-Host Organization: Korea Concrete Institute (KCI)

Website: https://www.kci.or.kr/eng/

Local Moderator: Ki Yong Ann, Professor, Hanyang UniversityACI member Ki Yong Ann is a Professor in the Department of Civil and Environmental Engi-neering at Hanyang University, Ansan, South Korea. He is a member of the ACI Committee on Codes and Standards Advocacy and Outreach and a convener of ISO/TC 71/SC 7 for steel corrosion in concrete. He received his MPhil, PhD, and DIC from the Imperial College, London, UK. His research interests include durability of concrete on chloride transport and steel corrosion.

First Speaker: Dong Joo Kim, Director of Graduate School, and Professor, Civil and Environmental Engineering, SEJONG University, Seoul, Korea

Dong Joo Kim has been a Professor in the Department of Civil and Environmental Engineering at SEJONG University, Seoul, South Korea, since September 2009. He received his PhD from the University of Michigan, Ann Arbor, MI, USA, in 2009. His research interests include self-sensing behavior and impact resistance of high-performance fiber-reinforced cementitious composites, impact engineering, and prestressed concrete.

Presentation Title: Review on Rate-Sensitive Fiber-Matrix Interfacial PropertiesRecent developments in understanding the effect of high strain (or loading) rate on the tensile behavior of strain-hardening fiber-reinforced cementitious composites (SH-FRCCs) was discussed. As one of the reasons for the rate-sensitive tensile response of SH-FRCCs, the rate-sensitive interfacial bond characteristics between fiber and matrix have been investigated. The rate-sensitive pullout resistance of steel fibers was related to the interfacial crack path depending on the interfacial density of the matrix surrounding the fiber. Moreover, the rate-sensitive hardness of the fiber-matrix interface was reported to be dependent upon the Ca/Si ratio of C-S-H.

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Wednesday, July 14, 1:00-2:00 pm Seoul Time / 12:00 am-1:00 am Detroit TimeCo-Host Organization: Korea Concrete Institute (KCI)

Second Speaker: Dr. Sukhoon Pyo, Assistant Professor, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea

Dr. Sukhoon Pyo is an Assistant Professor in the Department of Urban and Environmental Engineering at Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea. He graduated in 2006 with a BS in civil engineering from Hanyang University, Seoul, Korea, and his MS in 2008 and PhD in 2014 in civil engineering at Korea Advanced Institute Science and Technology (KAIST), Daejeon, South Korea, and the University of Michigan, Ann Arbor, MI, USA, respectively. His research interests include the development of sustainable and innovative construction materials, including ultra-high-performance concrete (UHPC) and pervious concrete.

Presentation Title: Rheological Properties of Cement Binder for Pervious ConcreteThis study examines the desirable binder properties for pervious (porous) concrete. Numerous studies investigated the effects of aggregate size, aggregate shape, or different binder materials on the porosity and the strength of porous concrete. However, no general design guidelines for the binder have been established. As the binder characteristics significantly affect the porous concrete quality, this research investigates the effect of its rheological properties on the compressive strength of porous concrete. The rheology tests were performed on the fresh binders to measure plastic viscosity and adhesion force, and their results are correlated with the compressive strength of the porous concrete. Based on the test results, the appropriate rheological properties of the binder mixture design are discussed.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:00-2:00 pm Shanghai Time / 1:00-2:00 am Detroit Time

Co-Host Organization: ACI China Chapter

Website: https://www.concrete.org/chapters/findachapter/chapterhome.aspx?cid=C0C10600

Local Moderator: Qian-Qian Yu, Associate Professor, Tongji UniversityDr. Qian-Qian Yu is an Associate Professor at Tongji University, Shanghai, China. She received her PhD from Tongji University in 2014 and spent 2 years, from 2011 to 2013, at Monash University, Melbourne, Australia, as a visiting student. Her research interests include the rehabilitation of infrastructures and innovative structural systems.

First Speaker: Guang-Ming Chen, Professor, School of Civil Engineering and Transportation, South China University of Technology

Dr. Guang-Ming Chen is a Professor in the School of Civil Engineering and Transportation at South China University of Technology (SCUT), Guangzhou, China. Before taking the current role, he worked as a Professor at Guangdong University of Technology (GDUT), Guangzhou, China. He was at the University of California at Berkeley, Berkeley, CA, USA, for 1 year as visiting scholar during 2015-2016.

Professor Chen has been the Principal Investigator for four National Natural Science Foundation of China (NSFC) projects. He is an Associate Editor of the international journal

Advances in Structural Engineering; a Member of the International Editorial Board for ASCE’s Journal of Composites for Construction; Guest Associate Editor of the international journal Frontier in Materials; and serves as a reviewer for several reputable international journals such as Journal of Structural Engineering, Journal of Composites for Construction, Engineering Structures, Construction and Building Materials, and Composite Structures. He is also a council member of the International Institute of FRP in Construction (IIFC) and an external reviewer of NFSC.

He has published over 60 peer-reviewed journal and conference papers, with an H-index of 22 in Google Scholar. He received his bachelor’s and master’s degrees from Huazhong University of Science and Technology (HUST), Wuhan, China, and his PhD from Hong Kong Polytechnic University, Hong Kong, China. His research interests include the use of fiber-reinforced polymer (FRP) in construction (both structural strengthening and new structures) and the use of recycled concrete aggregate concrete (RAC) in construction.

Presentation Title: Finite Element Analyses of FRP-Strengthened RC StructuresFailure of reinforced concrete (RC) members (such as beams, slabs) strengthened with externally bonded fiber-reinforced polymer (FRP) is usually governed by the debonding between FRP and concrete, which is associated with the cracking behaviour of the strengthened RC members. In experimental studies, it is usually difficult to capture such debonding failure due to its brittle and quick nature. The finite element (FE) method is a useful tool for investigating the failure mechanisms and processes of such debonding failure. This lecture provides a review of existing FE studies on FRP-strengthened RC structures, including

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Wednesday, July 14, 1:00-2:00 pm Shanghai Time / 1:00-2:00 am Detroit TimeCo-Host Organization: ACI China Chapter

but not limited to the research work done by the authors’ research group in the past decade. Key issues in the FE analysis of the debonding failure are discussed, based on which, an advanced FE model capable of predicting the failure mode and failure process of FRP debonding is introduced. A dynamic approach developed by the authors’ research group to overcome the difficulties in achieving numerical convergence, which is usually associated with FRP debonding and concrete cracking, is also presented. The proposed FE modeling approach has been successfully used to accurately simulate the intermediate crack (IC) debonding failure of RC beams strengthened in flexure with FRP plates, failure of FRP-plated beams with end-anchorages, failure of RC beams shear-strengthened with FRP and debonding failure of FRP-concrete bonded joints. Some numerical results are presented as examples to substantiate the accuracy of the proposed approach.

Second Speaker: Qian-Qian Yu, Associate Professor, Tongji UniversityDr. Qian-Qian Yu is an Associate Professor at Tongji University, Shanghai, China. She received her PhD from Tongji University in 2014 and spent 2 years, from 2011 to 2013, at Monash University, Melbourne, Australia, as a visiting student. Her research interests include the rehabilitation of infrastructures and innovative structural systems.

Presentation Title: Durability of Concrete with CFRP Wrapping Over Ten YearsCarbon fiber-reinforced polymer (CFRP) material has a high strength-to-weight ratio and good resistance to corrosion and environmental attacks. It has been widely used in the rehabilitation of aging infrastructure. However, the durability of the strengthened system has not yet been assessed thoroughly because most of the previous study was conducted based on accelerated tests while the long-term investigation was less reported. This paper investigated the effect of CFRP wrapping on the axial behavior of concrete cylinders subjected to different environments for more than 13 years. The specimens were exposed to five different conditions, including standard curing, immersion in distilled water, immersion in saturated Na2SO4 solution, outdoor sheltered from the rain, and outdoor without shelter from the rain. Axial compression tests were performed on the wrapped concrete cylinders. The load-bearing capacity and stress-strain responses were recorded. It was found that CFRP wrapping could effectively improve the ultimate strength and ductility of the columns. Although scatter existed, no significant effect of the environmental exposure on the load-bearing capacity of the cylinder specimens was observed, which indicates good durability of the strengthening system.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 142:00-3:00 pm Singapore Time / 2:00-3:00 am Detroit Time

Co-Host Organization: ACI Singapore Chapter

Website: http://www.concrete.org.sg

Local Moderator: Dr. Lu Jin Ping, President, ACI Singapore ChapterLu Jin Ping is currently the Managing Director of Admaterials Technologies Pte Ltd, Singapore, and has more than 30 years of experience working in areas of research and development; and testing and technical consultancy for construction materials. He was previously a Lecturer in the Department of Construction Materials at Tongji University, Shanghai, China, from 1988 to 1994. Lu is currently the President of the ACI Singapore Chapter, and also serves as an Advisory Committee member of Temasek Polytechnic, School of Applied Science SAC; a Council Committee member for Management System and Product (CCMP); a member of SAC Technical Committee

for Laboratory Accreditation (SINGLAS); a member of SAC Technical Committee for Proficiency Test; and a member of Board of Directors, International Congress on Polymers in Concrete (ICPIC). Lu has presented more than 50 papers at various international conferences in the region and has published articles on testing, performance, and research on construction materials. He is the lead auditor for the certification of ready mixed concrete products by the Singapore Accreditation Council. He received a 5-year service award of dedicated voluntary service to the community from the People’s Association and Merit Award from Spring Singapore for meritorious service and contribution to the Singapore National Standardisation Program.

Second Speaker: Dr. Guoqing Geng, Assistant Professor, Department Civil and Environmental Engineering, National University of Singapore

Dr. Guoqing Geng received his PhD in civil and environmental engineering from the University of California, Berkeley, Berkeley, CA, USA, in 2017, with research interests in microscale chemistry and mineralogy of cementitious materials. After his PhD, Geng was awarded a postdoctoral fellowship at the Paul Scherrer Institute (Switzerland), where he studied the durability of concrete both as a construction material and hosting material for radioactive wastes. Since 2019, Geng has led a research group in Civil and Environmental Engineering of the National University of Singapore (NUS) that focuses on the sustainability- and performance-based design

of construction materials, as well as predicting and enhancing their long-term durability. He is an active member of the ACI Singapore Chapter and several technical committees of RILEM.

Presentation Title: Concrete Research in Singapore Context—Experience from NUSMost modern infrastructures are built with concrete. Singapore is accelerating its pace towards a “city of tomorrow,” which poses new challenges to the existing concrete technology. Our local construction agencies, concrete researchers, and suppliers have agreed on several themes that are likely to shape the concrete technology in the future; for example, the productivity of concrete manufacturing, the longevity of concrete infrastructure, and the circular economy of the construction industry. This presentation gives

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Wednesday, July 14, 2:00-3:00 pm Singapore Time / 2:00-3:00 am Detroit TimeCo-Host Organization: ACI Singapore Chapter

several examples in the Singapore context and introduces the research activities in CEE of NUS that aim to tackle the local problems.

Second Speaker: Dr. Hongjian Du, Lecturer, Department of Civil and Environmental Engineering, National University of Singapore

Dr. Hongjian Du, a member of the ACI Singapore Chapter, joined the Department of Civil and Environmental Engineering at the National University of Signapore in 2019. More recently, Du has been working in three-dimensional (3-D) concrete printing, an emerging technology that may reshape construction in the future. Du mainly focuses on printable materials design, performance characterization, and novel applications with his students. He serves on the International Advisory Committee and Organizing Committee for the International Conferences of 3-D Construction Printing. He was invited to be the guest editor for the Journal of Measurement,

Elsevier. He is a regular reviewer for research grants, journal articles, and national standards. Du is a passionate educator who strives to provide the best learning experience to his students in both

lecture theatres and online classrooms. He applies learner-centric and experiential learning techniques to his teaching. He carefully designs learning activities in the class such that his students stay engaged in the course and motivated to perform their best. He was awarded the NUS Provost Young Educator Award in 2020. His research interests include the durability of concrete materials, reuse of solid waste in construction, and low-carbon cementitious binder development.

Presentation Title: Improving Concrete Construction Productivity and University Education by 3-D PrintingAs the most widely used human-made material, concrete has been improved by technology and science to meet the society development needs such as safety, durability, sustainability, and productivity. In this webinar, the speaker will introduce the latest development of concrete research at the National University of Singapore. Du will share the progress on digital concrete fabrication by 3-D printing: challenges and possible solutions. In the seminar, Du will also talk about the concrete education in a higher learning institution, including ways to inspire and better equip the students for future digital construction era through concrete 3-D printing.

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 142:00-3:00 pm Bangkok Time / 3:00-4:00 am Detroit Time

Co-Host Organization: Thailand Concrete Association (TCA)

Website: https://thaitca.or.th/

Local Moderator: Thanakorn Pheeraphan (Pete), Associate ProfessorThanakorn Pheeraphan (Pete) received his Bachelor of Science (distinguished) in civil engi-neering from Virginia Military Institute (VMI), Lexington, VA, USA, in 1991, and his Master of Science in civil engineering and his PhD from Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, in 1993 and 1997, respectively. He has been working for the Department of Civil Engineering at the Navaminda Kasatriyadhiraj Royal Thai Air Force Academy (NKRAFA), Bangkok, Thailand, since 1997. Currently, he is the Deputy Director at the NKRAFA Graduate School. He has also worked as an Adjunct Faculty member at the Asian Institute of Technology

(AIT), Khlong Luang, Thailand, since 1999, where he has taught and continued working on research in mortar and concrete technology with graduate students. His research interests include preplaced concrete aggregate, design and inspection of airfield pavement, development of repair material and special concrete, development of special mortar products for commercial application, and design and testing of protective structures for military applications. He has been the President of Thailand Concrete Association (TCA) since 2018. In 2019, TCA was awarded to host the 16th International Congress on the Chemistry of Cement (ICCC), which will be held in 2023, under his guidance. In 2020-2021, he received the Siam Cement Group (SCG) Chair Professor Scholarship.

First Speaker: Dr. Somnuk Tangtermsirikul, Professor Dr. Somnuk Tangtermsirikul is a Professor at the School of Civil Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Pathum Thani, Thailand, and is the Center Head of the Construction and Maintenance Technology Research Center (CONTEC) at SIIT. He is a former Vice President of Asian Concrete Federation, and a former President and current Advisor of TCA. He is also an Advisor of the Subcommittee on Civil Engineering at the Engineering Institute of Thailand, Bangkok, Thailand, and is a National Science and Technology Development Agency (NSTDA) Chair Professor Grant Recipient. His

research interests include performance-based analysis and design of concrete; pozzolans, waste, and recycled materials; special concrete, 3-D concrete printing; durability and service life design of concrete structures; and evaluation and maintenance of concrete structures. He has published more than 140 journal papers and more than 250 conference papers.

Presentation Title: Off-Spec Fly Ashes: Are They Really Useless?There are large variations of fly ash specifications applied in different countries. Even though fly ash may be well used for construction in one country, it is possible for it to fail the specification in another country. This is always problematic, especially when internationally collaborative or joint-venture projects are involved. Here, the results of studies conducted on properties of concrete using various categories of off-spec fly ashes are presented. Results indicate that there are always benefits to some concrete properties, especially when compared to concrete with only cement as a binder, when each off-spec fly ash is used in the concrete. Therefore, it is recommended to reconsider modifying specifications of fly ash to obtain more reasonable ones, as is the current practice in Thailand.

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Wednesday, July 14, 2:00-3:00 pm Bangkok Time / 3:00-4:00 am Detroit TimeCo-Host Organization: Thailand Concrete Association (TCA)

Second Speaker: Chalermwut Snguanyat, Research Group Leader – Mortar TechnologyChalermwut Snguanyat received his BSc in chemistry from Khon Kaen University, Khon Kaen, Thailand; and his MEng in chemical engineering from King Mongkut’s University of Technology Thonburi, Bangkok, Thailand. He specializes in mortar technology, supplementary cementitious materials (SCM) technology, additives for mortar and concrete, pigment and polymer coating technology, 3-D printing technology, and fiber technology. He has earned achievements for new products and improving existing products, including different types of mortar, white cement, portland cement, decorative cement, and 3-D concrete printing. He also holds multiple patents,

including for cements with rapid and high early compressive strength, high bonding strength, high f low-ability, and a long shelf life; bedding mortar for concrete roof tile; an additive for efflorescence reduction; a mixed cement formula providing compressive strength comparable to that of portland cement; magic mortar solution for surface decoration; a method for constructing a layered structure and apparatus; a cement formula composition for constructing a multilayered object; and a formula of powdered materials for machines in forming construction, structural, and powder materials.

Presentation Title: The First On-Site 3-D Construction Printing in Thailand: SCG Co-Working SpaceThe Siam Cement Group Public Company Limited (SCG) co-working space project is the first on-site 3-D construction printing location, located in Saraburi, Thailand. The design phase began in September 2020 and finished in December 2020. The dimensions are 6 x 17 x 3.2 m, with a usable area of 102 m2. By creating the high-resolution textured surfaces, each layer was 1 cm high, allowing the overall printing time to be 169 continuous hours. The project consists of three rooms: a meeting room, a co-working area, and a café. The purpose of the project is a combination of aesthetic textured surfaces (single-layer structural surface) and structural function, developed by the parametric design of computer programs. The design is specified to have a curve at the maximum slope of 20 degrees. After fine-tuning the design, the finite element analysis method was used to verify its structural safety, which was determined with the input of high-performance material specification. In addition, building information modeling (BIM) software was used to evaluate the construction management process and perform clash deflection of the mechanical, electrical, and plumbing systems.

After finishing printing this project, it was determined that 3-D printing has many benefits compared to conventional construction, including: wall construction time reduced to 10 days (66% faster than conventional); workforce reduced to only five operators (50% less than conventional); construction waste reduced to only 1.8 tons (24% less than conventional), 1.4 tons of which can be recycled as paving block; and the benefits of using waste-minimizing solutions and less dust generation can offer a more sustainable and more environmentally friendly construction.

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:30-2:30 pm Mumbai Time / 4:00-5:00 am Detroit Time

Co-Host Organization: ACI India Chapter

INDIA CHAPER OF ACI

Website: http://www.icaci.com/

Local Moderator: Dr. Surendra Manjrekar, Chairman and Managing Director, Sunanda Speciality Coatings Pvt. Ltd., Mumbai, Maharashtra, India

ACI Honorary Member Dr. Surendra Manjrekar is a three-time Past President of the ACI India Chapter. He is Chair of many successful international conferences run by the chapter, as well as by the government of India. He has 41 years of experience of applied research and development in the fields of materials, corrosion control, waterproofing, and soil stabilization. He has been invited to speak internationally in many countries, including the United Kingdom, the United States, Malaysia, Oman, Kuwait, Romania, Singapore, Mexico, the Democratic Republic of the Congo, Tanzania, Nepal, Bhutan, and Canada. He has also initiated ACI Certification Training on

the Indian subcontinent.

First Speaker: Venkataramana Heggade, CEO, STUP ConsultantsV. N. Heggade is the Chief Executive Officer (CEO) at STUP Consultants and the former Executive Director at Gammon India Limited. He is a senior professional with over three and a half decades of experience in the construction sector in the areas of design, technical, site, and project management; and contract management of highways, bridges, energy structures such as chimneys and cooling towers, and environmental, marine, and hydraulic structures. He has received 10 national recognitions, in addition to international prizes from various institutions, such as the Indian Roads Congress (IRC), the Indian Concrete Institute (ICI), the National Design &

Research Forum (NDRF), the Indian Buildings Congress (IBC), and the International Association for Bridge and Structural Engineering (IABSE). He has more than 145 publications to his credit and is a member of various IRC and Bureau of Indian Standards (BIS) committees. He is also a member of TG 10.1 of the Fédération internationale du béton (fib), which is a special task group working on fib Model Code 2020. In addition, he is on the Technical Board of ICI; the Academic Board of Sardar Patel College Of Engineering, Mumbai, Maharashtra, India; and he is a Fellow of the Indian National Academy of Engineering.

Presentation Title: Introspection on Recent Failures of Precast Segmental Bridges during Construction in IndiaRecently, a number of structural failures in precast segmental bridges and flyovers have taken place in India unabated. Interestingly, many of these bridge failures are of a similar nature and occurred during the construction stage. The frequency of these failures is increasing to an alarming level and there is a strong need for introspection by all stakeholders to look at the current practice and revisit the whole process of design, construction, and quality assurance holistically. In this presentation, after elaborate synthesis, an attempt has been made to give some remedial measures on design and construction for this rampant malady of precast segmental bridge failure during construction.

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Wednesday, July 14, 1:30-2:30 pm Mumbai Time / 4:00-5:00 am Detroit TimeCo-Host Organization: ACI India Chapter

Second Speaker: Shri Pramod Ahuja, Director (Works), Mumbai Metropolitan Region Development Authority (MMRDA)

Shri Pramod Ahuja received his Bachelor of Civil Engineering from Indian Institute of Technology (IIT) Roorkee, Roorkee, Uttarakhand, India, in 1988; his postgraduate diploma in rock mechanics from IIT Delhi, South Delhi, Delhi, India, in 1990; and his Master of Public Policy from KDI School of Public Policy and Management, Sejong City, South Korea, in 2010. He has also taken advance courses in Permanent Way and Bridges at Indian Railways Institute of Civil Engineering, Pune, Maharashtra, India. He has previously worked as Chief Project Manager/Executive Director (Projects) at Delhi Metro Rail Corporation Limited, Deputy Chief Engineer

(Construction) at Western Railway, Deputy Chief Engineer (Track Modernisation) at Western Railway, and had various assignments at Northeast Frontier Railway. Currently, he is the Director (Works) of the Metro Project Implementation Unit at the Mumbai Metropolitan Region Development Authority (MMRDA).

Presentation Title: Measures to Increase Durability on Mumbai Metro Rail Project to Meet the Design Life Requirement of Concrete in Severe Coastal ClimateMumbai Metropolitan Region Development Authority (MMRDA) is constructing 337 km of metro lines in Mumbai, to be completed over the next 5 years. Being a coastal city, the climate in Mumbai is severe and ideal for inducing corrosion to steel. It is a challenge in such severe conditions to construct durable concrete structures to meet the design life of 120 years. This presentation summarizes all the measures being taken by the implementing agency MMRDA to increase the durability of structures under construction. Some of the measures and their impact are elaborated in the detailed presentation. Measures taken include limiting the temperature of concrete to less than or equal to 32°C; fusion-bonded epoxy coating (FBEC) and cement polymer composite coating (CPCC) bars used on site; CPCC system bars; ensuring proper vibration during concreting; portland slag cement (PSC cement) used in pile and pile caps (structure where in contact with soil); use of cementitious materials (fly ash/Alccofine/microsilica) for the concrete grade 40 MPa and above; and use of concrete admixture in the mixture.

29

CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:00-2:00 pm Dubai Time / 5:00-6:00 am Detroit Time

Co-Host Organization: ACI UAE Chapter

UAE CHAPTERWebsite: https://aci-uae.com/

Local Moderator: Ihab Bassiouni, Principal Building Studies EngineerIhab Bassiouni received his bachelor’s degree in civil engineering from Beirut Arab University, Beirut, Lebanon, and his diploma in Advanced Concrete Technology from the Institute of Concrete Technology, UK. He is Principal Building Studies Engineer at the Dubai Municipality Building Permit Department. His role involves review and approvals of building and construc-tion systems, along with conducting and participating in studies and research in the field of building construction. He has more than 18 years of experience in the building construction field, with a focus on concrete construction including consultancy, inspection, and training

services. He is a National Ready Mixed Concrete Association (NRMCA)-approved Inspecting Engineer, Trainer, and Examiner in the Middle East. He has trained many engineers and technicians in Dubai and the surrounding region on concrete technology and testing, and has also inspected hundreds of ready mixed concrete facilities in the region. He is also a Board member of the local ACI UAE Chapter.

First Speaker: Ahmad Khartabil, Technical Manager, Transgulf Readymix Concrete Co.Ahmad Khartabil graduated magna cum laude as a civil engineer from Abu Dhabi University, Abu Dhabi, UAE, in 2012. He is a Technical Manager at Transgulf Readymix Concrete Co. LLC, UAE. He is Chair of the Event Committee of the ACI UAE Chapter, and is a Certified Concrete Professional in concrete technology by the NRMCA. His research interests include hot weather concreting, concrete durability and service life, sustainable construction materials, and rheology of cement paste and concrete. He received the first fib-UAE Graduate Fellowship Award in 2018, which is an initiative supported by the Society of Engineers-UAE and the fib UAE

Chapter. His paper titled “Carbonation Resistance of Sustainable Concrete Using Recycled Aggregate and Supplementary Cementitious Materials” received the best presentation award at the January 2019 3rd International Conference on Civil and Building Materials, Singapore.

Presentation Title: Sustainable Green Concrete in UAE and the Impacts of Incorporating Recycled Aggregate on its Fresh, Rheological, Mechanical, and Durability PropertiesIn the last few decades, the United Arab Emirates (UAE) has witnessed rapid development in the construction industry. Recently, there has been a greater emphasis on adopting sustainability practices in all aspects related to construction. The recent sustainable practice that was enforced by Dubai Municipality in the construction field is “greening the concrete” by mainly replacing the portland cement with sup-plementary cementitious materials (SCMs), such as ground-granulated blast-furnace slag (GGBS) and fly ash. On the other hand, the use of recycled aggregates can also contribute to the greening of concrete and to the reduction of the carbon footprint from the construction industry in the UAE. Consequently, it is significant to study the suitability of locally available recycled aggregates and their effect on concrete’s fresh and

30

Wednesday, July 14, 1:00-2:00 pm Dubai Time / 5:00-6:00 am Detroit TimeCo-Host Organization: ACI UAE Chapter

hardened properties, to expand the current practice. The recycled aggregates used in this investigation are obtained from a local recycled aggregates plant in Abu Dhabi, using concrete from demolished buildings in Abu Dhabi. The natural aggregates in the concrete mixtures were replaced by recycled aggregates with the following percentages: 20, 40, 60, and 100%. The concrete parameters investigated are mainly the slump retention, rheology, compressive strength, and water absorption. The results are analyzed to arrive at pertinent conclusions for the use of concrete with recycled aggregates in different types of construction projects.

Second Speaker: Haider Al Haidary, Project Executive at Middle East Engineering Technologies (MEET)

Haider Al Haidary has conducted research in concrete and sustainability at the American University of Sharjah, Sharjah, UAE, and is currently the Project Executive at Middle East Engineering Technologies (MEET), where he seeks to bring 3-D concrete printing into the construction field. MEET is a subsidiary of Ginco Contracting Co LLC, where he also serves as a Structural Engineer and Technical Officer.

Presentation Title: MEET 3-D Concrete Printing This presentation is an introduction to Middle East Engineering Technologies (MEET), a 3-D concrete printing company in the United Arab Emirates, and to 3-D concrete printing in general. The presentation shall look into 3-D printing in construction and the types of robots and materials used. Some benefits and challenges shall be discussed, as well as a look at the first 3-D printed house in the UAE. The house is a sustainable, solar-powered two-bedroom hall with all its walls 3-D printed in just over 2 weeks.

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:00-2:00 pm Baghdad Time / 6:00-7:00 am Detroit Time

Co-Host Organization: ACI Iraq Chapter

Website: https://aci-iraq.com/

Local Moderator: Dr. Ali N. Attiyah, Assistant Professor, University of Kufa, Najaf, IraqDr. Ali N. Attiyah received his PhD in structural engineering from the University of Baghdad, Baghdad, Iraq, in 2000. He is currently an Assistant Professor at the University of Kufa, Najaf, Iraq, where his teaching and research has focused on concrete for more than 20 years. He has designed many reinforced concrete structures in different Iraqi cities and, along with his colleagues from other Iraqi universities, succeeded in establishing the ACI Iraq Chapter in 2013, where he was elected to be the Executive Director of the chapter—a position he still holds. He is a member of ACI Committees S803, Faculty Network Coordinating Committee, and S801-TG1,

Student Competitions Task Group.

First Speaker: Dr. Maan S. Hassan, Professor of Civil Engineering, University of Technology, Iraq, Baghdad, Iraq

ACI member Maan S. Hassan is a Professor of civil engineering at the University of Technology, Iraq, Baghdad, Iraq. He received his PhD from the University of Technology, Baghdad, Iraq, in 2007. His specialty is in concrete materials and technology, and he has published broadly in this area and serves on several ACI Iraq Chapter committees. He is the Head of the Building Engineering and Construction Management Division, a Professor of sustainable concrete and composite engineering, and is the ACI Iraq Chapter Certification Program Director. He is also a former Fulbright Scholar.

Presentation Title: Concrete Quality Control and Troubleshooting in Hot WeatherThe placement of concrete in hot weather regions is a major challenge due to thermal cracking and durability problems. This presentation explains the possible problems that site engineers could face in concrete quality in hot conditions, and how to avoid their negative influence. Some limitations of ACI 305 and other international codes will also be reviewed.

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Wednesday, July 14, 1:00-2:00 pm Baghdad Time / 6:00-7:00 am Detroit TimeCo-Host Organization: ACI Iraq Chapter

Second Speaker: Dr. Ahmed S. Mohammed, Assistant ProfessorDr. Ahmed S. Mohammed received his BSc and MSc from the University of Technology, Baghdad, Iraq, and his PhD in civil engineering/geotechnical engineering from the University of Houston, Houston, TX, USA. He is a Postdoctoral Researcher Fellow in civil engineering/geomaterial engi-neering in the Department of Civil and Environmental Engineering, University of Houston. His research interests include petroleum engineering, materials engineering, and geotechnical engineering. His cutting-edge research was in the development of hydraulic fracturing and smart cement for oil well application related to preventing disaster in the Gulf of Mexico. He also

developed smart drilling muds for application in the petroleum and geotechnical fields. He integrated the advances in nanotechnology, polymer technology, and material technology to modify smart cement, drilling muds, and expansive clays. His research on geotechnical engineering focused on using polymers to control the expan sion in clays causing major infrastructural damage in many parts of the United States, including Houston, Dallas, and Denver. His research focused on the experimental studies and mathematical modeling of the performance of the smart cement, smart drilling mud, and polymer-treated expansive clay. He has developed several mathematical models to predict the behavior of smart cement, smart drilling mud, and polymer-treated expansive clays. He developed models to predict the curing, rheological properties, and piezoresistive behavior of smart cement. He also developed a new model to predict the rheological behavior of drilling muds, and has developed constitutive models to predict the behavior of polymer-treated expansive clays. His work has resulted in 45 journal publications and conference proceedings.

Presentation Title: Artificial Neural Network (ANN), M5P-tree, and Regression Analyses to Predict the Early-Age Compression Strength of Concrete Modified with DBC-21 and VK-98 PolymersThis study investigated the effect of two water-reducer polymers with smooth and rough surfaces on the workability and the compression strength of concrete from an early age (1 day) up to 28 days of curing. The polymer contents used in this study varied from 0 to 0.25% (wt. %). The initial ratio between water and cement (w/c) was 60%, and it slowly reduced to 0.46 by increasing the polymer contents. The compression strength of concrete increased significantly when increasing the polymer contents by 24 to 95%, depending on the polymer type, polymer content, w/c, and curing age. Because of a fiber net (netting) in the concrete when the polymers were added, which leads to a decreased void between the particles, thus binding the cement particles, the viscosity of the fresh concrete and the compression strength of the hardened concrete rapidly increased. This study also aims to establish systematic multiscale models to predict the compression strength of concrete containing polymers, and to be used in construction projects with no theoretical restrictions. For that purpose, 88 concrete samples modified with two types of polymers (44 samples for each modification) have been tested, analyzed, and modeled. Linear, nonlinear regression, M5P-tree, and artificial neural network (ANN) approaches were used for the qualifications. In the modeling process, the most relevant parameters affecting the strength of concrete were the polymer incorporation ratio (0 to 0.25% of cement’s mass), the w/c (0.46 to 0.6), and the curing ages (1 to 28 days). Among the approaches used and based on the training data set, the model based on the nonlinear regression, ANN, and M5P-tree models seems to be the most reliable. The sensitivity investigation concludes that the curing time is the most dominating parameter for predicting the maximum stress (compression strength) of concrete with this data set.

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 141:00-2:00 pm Alexandria Time / 7:00-8:00 am Detroit Time

Co-Host Organization: ACI Egypt Chapter

EGYPT Chapter

Website: https://www.concrete.org/chapters/findachapter/chapterhome.aspx?cid=C0C08600

Local Moderator: Dr. Nasser Darwish, FACI, Professor of Concrete Structures and Bridges, Alexandria University, Alexandria, Egypt

Dr. Nasser Darwish, FACI, is a Professor of concrete structures and bridges at Alexandria University, Alexandria, Egypt, and is also a Structural Consultant. He is Chairman of the ACI Egypt Chapter and the Egyptian Concrete Society, and is a member of the Egyptian Concrete Code Committee, the Egyptian Repair and Strengthening Code Committee, and the Egyptian FRP Standing Code Committee. He is also a member of ACI Committee 325, Concrete Pavements.

First Speaker: Dr. Nasser Darwish, FACI, Professor of Concrete Structures and Bridges, Alexandria University

Dr. Nasser Darwish, FACI, is a Professor of concrete structures and bridges at Alexandria University, and is also a Structural Consultant. He is Chairman of the ACI Egypt Chapter and the Egyptian Concrete Society, and is a member of the Egyptian Concrete Code Committee, the Egyptian Repair and Strengthening Code Committee, and the Egyptian FRP Standing Code Committee. He is also a member of ACI Committee 325, Concrete Pavements.

Presentation Title: Lessons Learned and Challenges: Averting a Structural Disaster—Faults, Experience, and LessonsThe actual averting of a structural disaster of a unique unprecedented incident—such as the Azarita inclined building accident, in which a 40 m tall building toppled into an adjacent 60 m tall building, thus threatening the failure and collapse of entire buildings in the region by domino effect—is presented. Faults, experience, and lessons learned are highlighted.

Second Speaker: Dr. Ashraf El-Zanaty, Professor of Concrete Structures, Cairo University, Giza, Egypt

Dr. Ashraf El-Zanaty is Professor of concrete structures at Cairo University, Giza, Egypt, and is also a Structural Consultant. He is Chairman of the Egyptian Load Code Committee, Co-Chair of the Egyptian Repair and Strengthening Code Committee, and a member of the Egyptian Concrete Code Committee.

34

Wednesday, July 14, 1:00-2:00 pm Alexandria Time / 7:00-8:00 am Detroit TimeCo-Host Organization: ACI Egypt Chapter

Presentation Title: Lessons Learned and Challenges: Case Study—Strengthening of an RC BuildingThis presentation highlights the challenges facing the strengthening of a special structure, as well as the lessons learned.

Third Speaker: Dr. Amr Abdelrahman, Professor of Concrete Structures, Ain Shams University, Cairo, Egypt

Dr. Amr Abdelrahman is a Professor of concrete structures at Ain Shams University, Cairo, Egypt, and is also a Structural Consultant. He is Vice Chair of the Egyptian FRP Standing Code Committee, General Secretary of the Egyptian Society of Civil Engineers, and a member of the Egyptian Concrete Code Committee and the Egyptian Repair and Strengthening Code Committee.

Presentation Title: Challenges in New RC Buildings Design—Applications of Post-Tensioned Slabs in EgyptThe challenges and applications of post-tensioned slabs in Egypt are presented, with an emphasis on some special large-span slabs.

Fourth Speaker: Dr. Tarek Hassan, Professor of Concrete Structures, Ain Shams UniversityDr. Tarek Hassan is a Professor of concrete structures at Ain Shams University and is the Head of the Structural Design Unit at Dar Al-Handasah, Egypt.

Presentation Title: Challenges Facing Structural Design of Tall Buildings in Egypt— The Iconic TowerThe challenges facing structural design of tall buildings in Egypt are discussed, with special mention of the new Iconic Tower in the New Administrative Capital of Egypt, which is the tallest building in Africa.

Contributing Panelists

• Dr. Ali Abdel-Rahman, Professor of Concrete Structures and Ex-President, Cairo University• ACI member Dr. Ibrahim Mahfouz, Professor of Structural Engineering, Benha University, Benha, Egypt• Dr. Shadya El-Ebiary, Professor of Concrete Structures and member of the National Housing & Building

Research Center (NHBRC), Cairo • ACI member Dr. Said Allam, Professor of Concrete Structures and Dean of the Faculty of Engineering,

Alexandria University • ACI member Dr. Emad Etman, Professor of Concrete Structures and Vice President, Tanta University, Tanta, Egypt

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 142:00-3:00 pm Rome Time / 8:00-9:00 am Detroit Time

Co-Host Organization: ACI Italy Chapter

ITALY

CHAPTER

Website: http://www.aciitaly.com/

Local Moderator: Luigi Coppola, President, ACI Italy Chapter; Professor, University of Bergamo, Bergamo, Italy

Luigi Coppola is an Associate Professor in the Department of Engineering and Applied Sciences at the University of Bergamo, Bergamo, Italy. He is a Civil Engineer and is President of the ACI Italy Chapter. He has authored more than 300 original papers and 21 books on admixtures for concrete; alternative low-carbon binders; waste management in concrete production; deterioration, durability, and repair of concrete structures; mixture design; deterioration and restoration of historical buildings; corrosion; and protection of reinforcing bars in reinforced concrete (RC) structures. He is also an editor and member of many international journals. In

June 2000, he received an award from ACI and the Canadian Institute of Materials, Energy and Transportation (CANMET) for “outstanding and sustained contributions to enhance the durability of concrete.” He is the Chairperson of the Thirteenth International Conference on Superplasticizers and Other Chemical Admixtures in Concrete and the Fifteenth International Conference on Recent Advances in Concrete Technology and Sustainability Issues, both of which will be held in Milan, Italy, in June 2022.

First Speaker: Paolo Riva, Professor of Structural Engineering, University of BergamoPaolo Riva is a Professor of structural engineering in the Department of Engineering and Applied Sciences at the University of Bergamo, where he served as Dean of Engineering from 2009 to 2015. Among other courses, he teaches seismic design of reinforced concrete (RC) structures. This subject is strictly related to his research interests, and he has published over 250 papers on subjects such as nonlinear analysis of RC structures; seismic behavior of RC structures, precast concrete elements, and connections for precast structures; and seismic retrofitting of existing structures. Throughout his career, he has coordinated and collaborated

on several research and design projects. He is a member and Liaison of European Committee for Standard-ization (CEN) Technical Committee CEN/TC 229, Precast Concrete Products; Liaison of subcommittee CEN/TC 250/SC 8, Eurocode 8: Design of structures for earthquake resistance; and Convenor of CEN/TC 250/SC 8 Task Group, Cladding and Infill Panels, and Working Group CEN/TC 250/SC 8/WG 5, Concrete.

Presentation Title: HPFRC in Seismic Retrofitting of Existing Concrete StructuresIn this seminar, the basics for the application of high-performance fiber-reinforced concrete (HPFRC) jackets for the retrofitting of existing structures will be covered, with an emphasis on seismic retrofitting. The seminar will show the results of some experimental campaigns and some practical examples. Verification formulas will also be proposed.

36

Wednesday, July 14, 2:00-3:00 pm Rome Time / 8:00-9:00 am Detroit TimeCo-Host Organization: ACI Italy Chapter

Second Speaker: Paolo Casadei, Technical Sales Manager and Business Developer, Sireg Geotech Srl

Paolo Casadei is Technical Sales Manager and Business Developer for permanent composite structural reinforcement for Sireg Geotech Srl, a worldwide leader in manufacturing for civil engineering and geotechnical products based in Arcore, Province of Monza and Brianza, Italy. He received his BSc in civil engineering from the University of Bologna, Bologna, Italy, and his PhD from Missouri University of Science and Technology, Rolla, MO, USA. He has over 20 years of experience, and his research interests and professional expertise include strengthening and repair of RC and masonry structures and design of new RC structures with non-metallic

composite materials, fiber-reinforced polymers (FRP). He is an active member of ACI, ASTM International, and fib technical committees nationally and internationally, and is also a member of other professional associations.

Presentation Title: An Italian Perspective of Non-Metallic Reinforcement: Strengthening and Seismic Upgrade with FRP and FRCM Composite Materials and GFRP RebarsNon-metallic composite materials have become a widespread technology for many applications within the civil engineering industry. In Italy, due to its high seismic territory, composite materials became a primary solution for rehabilitation, strengthening, and seismic upgrade in the 1990s and are now a well-consolidated solution for the entire industry. Initially, epoxy-impregnated carbon fibers were the main and almost the only available and well-known solution for strengthening both reinforced concrete as well as masonry structures. However, in the last decade, since the catastrophic seismic event of the earthquake in L’Aquila, the inorganic composite materials known as fabric-reinforced cementitious matrix (FRCM) have become a more used and consolidated solution for strengthening the structural historical building heritage for issues such as breathability and better compatibility of cement-based matrixes with substrate, and also for issues related to the ease of installation. Additionally, they have been used for the opportunity of installing larger amounts of retrofit at a lower cost due to the switch between epoxy resin and cement-based matrixes.

At present, the retrofit industry primarily uses carbon fiber-reinforced polymer (CFRP) composite materials for retrofitting and seismic upgrade of reinforced and prestressed concrete structures and infrastructures, and FRCM for retrofitting and seismic upgrade of masonry buildings. Within this scenario, the critical situation of our infrastructure built almost a century ago is showing an entire built construction inventory that is in tremendous need of restoration in many cases, but in many others asking for a complete recon-struction. It is in the current situation that FRP reinforcing bars—primarily glass fiber ones—have become more commonly used for concrete restoration and refurbishment, as well as for building new existing concrete members. This presentation focuses on the current state of the art in the use of non-metallic FRP composite materials in Italy, covering all the different technologies that the industry has developed through many case studies.

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CONCRETEKNOWLEDGE

24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 143:00-4:00 pm Lausanne Time / 9:00-10:00 am Detroit Time

Co-Host Organization: Fédération internationale du béton (fib)

Website: https://www.fib-international.org/

Local Moderator: Dr. Agnieszka Bigaj-van Vliet, Senior Scientist, Netherlands Organization for Applied Scientific Research (TNO)

Dr. Agnieszka Bigaj-van Vliet is a Senior Expert in the field of safety and durability of concrete structures. She received her MSc in civil engineering from Warsaw University of Technology, Warsaw, Poland, and her PhD in civil engineering from Delft University of Technology, Delft, the Netherlands, and has been working for over 20 years at the Netherlands Organization for Applied Scientific Research (TNO), after years of research experience at the University of Stuttgart, Stuttgart, Germany, and Delft University of Technology. She is a Presidium member of the International Federation for Structural Concrete (fib), a member of the fib Technical Council,

and Head of the Dutch National Delegation to fib. She is Co-Convener of fib Task Group TG10.1, Model Code for Concrete Structures, and is a member of fib Commission 8, Durability, and fib Commission 10, Model Codes. She is also a member of ACI Subcommittee 318-L, International Liaison.

First Speaker: Luc Taerwe, Professor Emeritus of Structural Concrete at Ghent University, Ghent, Belgium; National RPGE Chair Professor, Tongji University, Shanghai, China

Luc Taerwe, FACI, is a Professor Emeritus of structural concrete at Ghent University, Ghent, Belgium, and a National RPGE Chair Professor at Tongji University, Shanghai, China. His research and teaching interests include reinforced and prestressed concrete, fire resistance, robustness of structures, tunnel linings, composite reinforcement (fiber-reinforced polymer), structural reliability, statistical quality control, and high-performance and fiber-reinforced concrete. He has a long-term involvement in various commissions and task groups of fib and he serves as Editor-in-Chief of the fib journal Structural Concrete. He is an honorary Life Member

and Fellow of fib, and is the recipient of several international awards. He is also a member of ACI Committees 363, High-Strength Concrete, and 440, Fiber-Reinforced Polymer Reinforcement, and Joint ACI-ASCE Committee 423, Prestressed Concrete.

Presentation Title: Resilient Concrete Structures in a Digitalized WorldIn the last decades, concrete has evolved from a basic building material towards a tailor-made multi-component cementitious material. Design software has become more powerful than ever and thanks to supercomputers, we can analyze complex concrete structures under a broad range of loading situations. The shape can be adapted to an optimized flow of forces, which offers additional freedom in conceptual design. A full life-cycle analysis results in eco-friendly green buildings. Via building information modeling (BIM), the structural concrete part is integrated in the complete building system in an interactive way. Three-dimensional printers, robots, and drones appear on building sites, and sensors combined with artificial intelligence (AI) allow an optimized assessment and upgrading of existing structures. Is this a challenging era for the construction industry or too many changes in a short time?

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Wednesday, July 14, 3:00-4:00 pm Lausanne Time / 9:00-10:00 am Detroit TimeCo-Host Organization: Fédération internationale du béton (fib)

Second Speaker: Dr. Agnieszka Bigaj-van Vliet, Senior Scientist, Netherlands Organization for Applied Scientific Research (TNO)

Dr. Agnieszka Bigaj-van Vliet is a senior expert in the field of safety and durability of concrete structures. She received her MSc in civil engineering from Warsaw University of Technology, Warsaw, Poland, and her PhD in civil engineering from Delft University of Technology, Delft, the Netherlands, and has been working for over 20 years at the Netherlands Organization for Applied Scientific Research (TNO), after years of research experience at the University of Stuttgart, Stuttgart, Germany, and Delft University of Technology. She is a Presidium member of the International Federation for Structural Concrete (fib), a member of the fib Technical Council,

and Head of the Dutch National Delegation to fib. She is Co-Convener of the fib Task Group TG10.1, Model Code for Concrete Structures, and is a member of fib Commission 8, Durability, and fib Commission 10, Model Codes. She is also a member of ACI Subcommittee 318-L, International Liaison.

Presentation Title: fib Model Code 2020—Shift towards Harmonized Approach to Design and Life Cycle Management of Sustainable Concrete StructuresWork has been underway in the Fédération internationale du béton (fib) aimed at advancing the fib Model Code for concrete structures. fib Model Code 2020 (MC2020) is envisaged as a single-merged general code, integrating the provisions for the design of new concrete structures with matters relating to existing concrete structures, placed in the context of creating sustainable solutions for the built environment. To this end, fib MC2020 takes sustainability as a fundamental requirement, implementing a holistic treatment of societal needs and impacts, life-cycle cost, and environmental impacts. fib MC2020 aims to deal effectively with both the design of structures and all the activities associated with the through-life management of existing concrete structures. With regard to provisions related to structural performance, fib MC2020 consistently adopts a safety philosophy based on reliability concepts. fib MC2020 aims to allow for taking full advantage of information that can be acquired by (in-place) testing and monitoring of existing structures, for the through-life management of existing concrete structures including prediction and updating of reliability and durability of deteriorating structures. In this presentation, basic principles applied in fib Model Code 2020 will be discussed.

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24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 144:00-5:00 pm Oslo Time / 10:00-11:00 am Detroit Time

Co-Host Organization: Norwegian Concrete Association (NCA)

Website: https://betong.net/

Local Moderator: Cecilie Hagby, Managing Director, Norwegian Concrete Association (NCA)Cecilie Hagby has been the Managing Director of the Norwegian Concrete Association (NCA) for the last 2 years. Prior to this position, she was the CEO at Svelviksand AS, a large producer of concrete aggregate, for 12 years, and was a Quality System Auditor at Kontrollrådet for 12 years. She received her MSc in engineering geology from the Norwegian University of Science and Technology (NTNU), Trondheim, Norway, in 1990. She specializes in concrete aggregates.

First Speaker: Kjell Skjeggerud, Head of Development, HeidelbergCementKjell Skjeggerud is the Head of Research and Development at Norcem AS/HeidelbergCement Northern Europe, where he has worked for 37 years. He has held positions as Marketing Director at Norcem AS, Plant Director at Norcem Brevik, and Technical Director for HeidelbergCement Northern Europe, and has worked on product development and research and development projects. He received his MSc in civil engineering from NTNU Trondheim in 1983.

Presentation Title: The World’s First Cement Carbon Capture Facility at Norcem Brevik Cement Plant—Making Concrete a Zero-Emission Building MaterialThe cement and concrete industry is responsible for approximately 5% of greenhouse gas emissions worldwide. An increasing focus on the environmental impact of our industry has led to a change in the perception of the sustainability of our products. In December 2020, the Norwegian Parliament approved the full-scale carbon capture and storage project “Longship.” The goal of the project is to demonstrate the full value chain of capture, transport, and permanent storage of CO2 in the aquifers under the North Sea. Norcem Brevik cement plant was elected as the primary source of CO2 for this demonstration project. Carbon capture is an essential part of the HeidelbergCement Zero CO2 Vision for our products, which in combination with other reducing measures will bring the CO2 emissions to a very low level. The project at our cement plant in Brevik has a capture capacity of approximately 400,000 tonnes of CO2 per year, which will reduce the emissions by more than 50%. Drastic CO2 reduction is necessary to reestablish the perception of our products as environmentally friendly and to secure our position as competitive building material for both residential and commercial buildings. This presentation summarizes the carbon capture project at Norcem Brevik, puts this project in the context of our zero CO2 vision, and gives an overview of the effect this will have on the environmental performance of our cement and concrete products.

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Wednesday, July 14, 4:00-5:00 pm Oslo Time / 10:00-11:00 am Detroit TimeCo-Host Organization: Norwegian Concrete Association (NCA)

Second Speaker: Erik Stormyr, Project Manager, Hywind TampenErik Stormyr received his MSc in mechanical engineering and has more than 29 years of experience in the offshore and onshore oil and gas and petrochemical industry. Most of his work experience is with offshore concrete liquefied natural gas (LNG) projects covering offshore regasification terminals, in addition to floating liquefied natural gas (FLNG). He was the GBS Engineering Manager on the Hebron project and has held multiple positions in concrete pre- front-end engineering design (pre-FEED) and FEED since 2002. He previously worked for Statoil (now Equinor), Norsk Hydro ASA, Aker Solutions ASA, and Höegh LNG AS for clients like

ExxonMobil, Chevron Corporation, Woodside Energy Ltd., and Novatek. He currently works at Kværner/ Aker Solutions.

Presentation Title: Building Hywind Tampen, the World’s Largest Floating Offshore Wind FarmThe Hywind Tampen project will be the first floating offshore wind project to supply renewable power for oil and gas installations. The wind farm will have a total capacity of 88 MW and is expected to cover approximately 35% of the annual power needs on the five platforms: Snorre A and B and Gullfaks A, B, and C. Hywind Tampen will reduce emissions from the Gullfaks and Snorre fields by more than 200,000 tonnes CO2 and 1000 tonnes NOx per year, which corresponds to annual emissions from 100,000 private vehicles. The floating concrete hulls (11 in total) are designed and constructed by Aker Solutions in Norway. The design and construction methods are based on long experience from construction of concrete substructures for the energy sector. The construction started in dry dock in January 2021 at Stord, an island in Vestland county, Norway. After the first part was completed, the dry dock was flooded and each concrete hull was moved to the deepwater site at Dommersnes in Ålsfjorden. All concrete hulls will be completed and ready for installation of the turbines during summer 2022. The strength requirement for concrete is 65 MPa (characteristic cylinder strength), and is made of aggregate from local sources and an environmentally friendly combination of binders that consists of cement clinker, fly ash, and silica fume. Each concrete hull will be made of approximately 3200 m3 of concrete. The total height of the floating hull is 107 m. The construction method used for erecting the walls is slipforming, which Aker Solutions has used for many years for construction of offshore structures.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 145:00-6:00 pm Madrid Time / 11:00 am-Noon Detroit Time

Co-Host Organization: Asociación Española de Ingeniería Estructural (ACHE)

Website: http://www.e-ache.com/

Local Moderator: Antoni Cladera, Civil Engineer; Professor, University of the Balearic Islands, Palma, Balearic Islands, Spain

Antoni Cladera received his MSc and PhD in construction engineering from the Polytechnic University of Catalonia (UPC), Barcelona, Catalonia, Spain. He taught at UPC from 2001 to 2003 before joining the University of the Balearic Islands (UIB), Palma, Balearic Islands, Spain, where he is a Professor in construction engineering and the Deputy Director of the Department of Industrial Engineering and Construction. He is a Civil Engineer and current Vice President of the Spanish Association for Structural Engineering (ACHE), an entity that constitutes a meeting point between engineers and architects from the structural engineering sector and the academic

world. He co-founded the YouTube teaching channel Ingenia, specializing in structural engineering. He has more than 60 published papers and collaborations in books or Spanish codes of practice, and more than 100 conference participations. His current research principally focuses on the development of mechanical models for the shear strength of concrete members and the study of the applications of shape-memory alloys in structural engineering. He has carried out research stays at the University of Toronto, Toronto, ON, Canada, and at the Swiss Federal Laboratories for Materials Science and Technology (EMPA). He has also worked as a civil engineer specializing in water, sanitation, hygiene, and construction in Guinea-Conakry, Niger, Togo, India, Paraguay, El Salvador, and East Timor, always in the field of international development cooperation. He is a member of various specialized international networks, including Joint ACI-ASCE Committee 445, Shear and Torsion.

First Speaker: Belén González-Fonteboa, Civil Engineer; Professor, University of A Coruña, A Coruña, Galicia, Spain

Belén González-Fonteboa is a Civil Engineer and a Professor at the University of A Coruña, A Coruña, Galicia, Spain, where she has also held roles as Academic Secretary and Co-Director at the School of Civil Engineering. She defended her PhD titled “Recycled concrete with recycled aggregates from concrete waste: mechanical properties and shear structural behaviour” at the University of A Coruña in 2002. Her main teaching subjects are construction materials, materials technology, and advanced materials. In this field, she has supervised more than 15 research works and has also supervised four PhD dissertations, one of which was awarded by the Royal

Academy of Engineering of Spain, and another by the Royal Academy of Engineering of Galicia. Prior to this, she spent 8 years working for a private company developing civil engineering projects. Her research interests include concrete technology, construction materials, sustainable construction, use of waste as building materials, special concretes (recycled, self-consolidating, lightweight, fiber-reinforced), bond in concrete, genetic programming, neural networks, rheology, and durability. Her research primarily focuses on the analysis of the possible recovering of different by-products in the construction field: mussel shells, ashes from different industrial activities, and construction and demolition wastes. The studies aim to develop new eco-concretes and mortars using innovative control systems and instrumentation, highlighting the use of rheology as a new tool to control fresh state behavior. This research aims to enhance the sustainability and the bio-construction to develop the future construction field. These lines of research have been developed over more than 25 competitive research projects and more than 20 contracts with private companies. From her research

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Wednesday, July 14, 5:00-6:00 pm Madrid Time / 11:00 am-Noon Detroit TimeCo-Host Organization: Asociación Española de Ingeniería Estructural (ACHE)

work, she has published more than 40 manuscripts in high-impact journals, more than 50 papers in different international and national conferences, six books, and five book chapters. She is on the editorial team of three JCR journals. She also is a member of several technical committees, including RILEM Technical Committee 273-RAC, Structural behaviour and innovation of recycled aggregate concrete; and International Federation for Structural Concrete (fib) Committee TG4.7, Structural Applications of Recycled Aggregate Concrete – Properties, Modeling, and Design.

Presentation Title: Sustainable Cement-Based Materials to Build the FutureEnvironmental degradation is one of the biggest problems humanity must confront. In the last decades, concerns about the environment have risen in developed societies. In this context, the construction industry is one of the sectors with the highest demand for natural resources because concrete is one of the most employed materials worldwide, with more than six billion tons fabricated each year. With the increase in global environmental awareness, different strategies have been used to advance the field of concrete sustainability. One of them is the design of concrete mixtures with alternative raw materials sourced from industrial waste. In this context, many recycled concretes have been explored incorporating different types of recycled aggregates such as construction and demolition wastes, mussel shells, tire rubber, coal bottom ash, and wood ash. In addition, supplementary cementitious materials (by-products from other industrial processes) have been incorporated in the concrete dosages replacing clinker—that is, metakaolin, fly ash, silica fume, or different fillers such as granite powder, biomass ash, or wood ash.

On other hand, it is generally agreed upon that frequent repairs of civil infrastructure over their service life is definitely unsustainable. It is clear that the extension of service life of a concrete structure will contribute to its sustainability. Within the frame of this strategy, the development of high-performance concretes such as self-consolidating concrete, self-healing concrete (designed with autogenous or auto-nomous healing), fiber-reinforced concrete, and more recently 3-D printing concrete, have emerged as a challenge in the construction field. The combination of both these strategies is also being explored. Self-consolidating or 3-D printing recycled concrete, self-healing concrete incorporating bacteria and recycled porous aggregate as internal curing water reservoirs, or self-consolidating fiber-reinforced concrete are some of the most promising concretes for the future. Finally, in parallel to the development of these new concretes, to suitably characterize them, it will be necessary to use new advanced tools and techniques. Some examples include rheology to define fresh state and thixotropy, techniques based on the digital correlations, or the employment of artificial intelligence.

Second Speaker: Héctor Bernardo, Civil Engineer; General Secretary, ACHE; Structural Engineer, gGRAVITY Engineering, DRAGADOS Group

Héctor Bernardo is the current General Secretary of ACHE and is a member of several work groups within ACHE and fib. He has 17 years of experience in construction of structures, as well as management, design, and construction roles in several projects including two world-class bridges. He holds a PhD in structural engineering and has been involved in research projects and published several papers in technical journals. His expertise includes design, means and methods, and temporary works for concrete structures.

Presentation Title: Challenges in the Construction of Singular Concrete Structures for the 21st CenturyThe construction of concrete structures has faced significant challenges in recent years. The rapid develop-ment of new concrete types, the refinement of the design methods, and the need for more durable and resilient concrete structures have forced structural engineering to go beyond the previous limits. This trend will continue with new challenges such as sustainability, accelerated construction, and digitization. This presentation will provide an overview of the most challenging concrete projects completed in Spain or by Spanish companies and will introduce some interesting topics currently being explored in concrete technology from the prism of ACHE, which works as a hub for the knowledge gained in this field.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 145:00-6:00 pm London Time / Noon-1:00 pm Detroit Time

Co-Host Organization: Institute of Concrete Technology (ICT)

Website: http://theict.org.uk

Local Moderator: Professor P. A. Muhammed Basheer, President, Institute of Concrete Technology Professor P. A. Muhammed Basheer, FACI, is Chair in Structural Engineering and former Head of the School of Civil Engineering at the University of Leeds, Leeds, West Yorkshire, UK, and is President of the Institute of Concrete Technology (ICT). He has been an educationalist and researcher in the field of civil (structural) engineering for nearly 40 years. He was instrumental in developing a distance-learning master’s program in Advanced Concrete Technology, which is accredited by ICT for their membership qualification. His research on nondestructive tests and structural health monitoring resulted in him establishing two university spin-outs: Amphora Non-

destructive Testing Limited and Sengenia Limited. He has secured research income in excess of £19 million, supervised more than 30 PhDs to successful completion, and published more than 350 refereed technical publications. He has received numerous awards/prizes for his contributions to research, including a lifetime achievement award from the Civil Engineering Research Association of Ireland and a CANMET/ACI award for his sustained contributions to the field of concrete technology. He was elected to be a Fellow of the Irish Academy of Engineering and a Fellow of the Royal Academy of Engineering in 2012 and 2014, respectively. He is also a Fellow of the Institution of Civil Engineers, the Institution of Structural Engineers, ACI, ICT, and the Inter national Association of Advanced Materials. He is a member of numerous technical committees of ACI, RILEM, and ASTM International. He was a member of the Research Excellence Framework REF2014 Sub-panel B14, Civil and Construction Engineering, and is a member of REF2021 Sub-panel B12, Engineering, for the national assessment of research on behalf of the four UK higher-education funding bodies.

First Speaker: Kevin Paine, Professor, University of Bath, Bath, Somerset, UKKevin Paine is a Professor of infrastructure materials and Deputy Director of the BRE Centre for Innovative Construction Materials at the University of Bath, Bath, Somerset, UK. His research interests include modern infrastructure materials, particularly the development of innovative, smart, and sustainable concrete technologies, including self-healing concrete, self-sensing concrete, use of nanomaterials, and low-carbon cementitious composites. Before joining the University of Bath, he was a Research/Teaching Fellow (later promoted to Lecturer) in the Concrete Technology Unit at the University of Dundee, Dundee, Scotland, UK, where he published

widely on the use of industrial by-products and recycled materials as cements and aggregates. He is a Chartered Engineer through the Institution of Civil Engineers, a Fellow of ICT, and a Fellow of the Higher Education Academy. He has published, lectured, and examined on cement science and concrete technology around the world.

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Wednesday, July 14, 5:00-6:00 pm London Time / Noon-1:00 pm Detroit TimeCo-Host Organization: Institute of Concrete Technology (ICT)

Presentation Title: Autonomic Self-Healing Concrete: A Resilient Material for LifeMaterial degradation of our civil infrastructure is inevitable and, consequently, regular maintenance is required to mitigate against failure during the service life. However, understanding and knowledge of composites is now leading to the creation of concretes with autonomic self-healing capabilities. This development will transform our infrastructure by embedding self-immunity and resilience so that structures evolve over their life span, enhancing durability and serviceability, improving safety, and reducing maintenance costs. Research in the UK under the auspices of the government-funded research projects Materials for Life and Resilient Materials for Life has developed a suite of multiple-scale biomimetic self-healing concretes that have the ability to adapt and respond to damage without external intervention.

This presentation covers the latest developments in these technologies. It discusses the use of minerals and polymers that create hardened healing products with similar mechanical properties to that of the original cementitious matrix, and the continued development of the use of bacteria to precipitate calcite in cracks in concrete. Whilst bacteria-based healing is possible through a number of pathways, it is only now that a better understanding is permitting the optimization of the process, and this will be explained.

Second Speaker: Barry Gilroy, Civil EngineerBarry Gilroy is a Civil Engineer with 20 years’ experience. He currently manages an international construction materials testing laboratory servicing Ireland, the UK, and Europe. Specializing in the quality analysis of a wide range of construction materials, he has a strong interest in concrete technology. He received his master’s degree in advanced concrete technology and his final-year research thesis received the Institute of Concrete Technology Award. He is an elected member of the Irish Concrete Society Council, ICT, The Institute of Asphalt Technology, and the Institute of Quarrying, and is a member of Engineers Ireland.

Presentation Title: Delivering More Sustainable Concrete through Accelerated Carbonation CuringThis presentation will discuss the findings of a research study into the effects of accelerated carbonation curing (ACC) on CO2 sequestration and on the compressive strength of concrete masonry units. ACC is a technique for curing fresh concrete that facilitates the sequestration of CO2. ACC of concrete masonry units can reduce the embodied carbon footprint and play a major role in sustainability by reducing global CO2. The study showed that ACC is different from weathering carbonation as it accelerates the hydration reaction of the unhydrated cement phases C3S and C2S, producing rapid strength gains. ACC also offers potential improvements in the mechanical and durability properties of concrete.

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24 HOURS OF

Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 142:00-3:00 pm São Paulo Time / 1:00-2:00 pm Detroit Time

Co-Host Organization: Instituto Brasileiro do Concreto (IBRACON)

Website: http://site.ibracon.org.br/

Local Moderator: Ing. Prof. Cesar Henrique Sato Daher, International Relationships Director, IBRACON

Cesar Henrique Sato Daher received his Master of Civil Construction and Civil Engineering from the Federal University of Paraná (UFPR), Curitiba, Paraná, Brazil. He has complementary international training in advanced pathology and special concretes at institutions in Canada, England, Spain, Portugal, and Mexico. He was a Building Technician at the Federal University of Technology – Paraná (UTFPR), Curitiba, Paraná, Brazil. He is a Founding Partner and Planning Director of the IDD Group, an institution dedicated to specialized teaching and research in the areas of civil engineering and architecture and urbanism, and is a Founding Partner of DAHER

Engenharia Consultiva e Tecnologia, an engineering consulting firm. He has been President of the Brazilian Association of Construction Pathology (ALCONPAT Brasil) since 2018 and has been a member of the Board of Directors/Director of Institutional Relations at the Brazilian Concrete Institute (IBRACON) since 2019. He has also worked as a Professor of civil engineering at Universidade Positivo, the Tuiuti University of Paraná, and at the Pontifical Catholic University of Paraná, all located in Curitiba, Paraná, Brazil. He has experience in the field of civil engineering, with an emphasis on construction materials and components, working mainly on conventional/special concretes, quality control, pathologies in civil works, and mortars. He was a world record holder in quality control of high-performance concrete (fck = 90 MPa—Centro Empresarial Antártica) in 2006 and is a pioneer in quality control of high-performance concrete in Paraná State (Ed. Evolution Towers—fck = 60 MPa, 2004). He was responsible for the quality control of concrete and materials of several major works (residential, commercial, industrial, and infrastructure) in Paraná and Brazil (including the tallest building in Curitiba, Universe Life Square), in addition to technical reports related to the diagnosis of pathological mani-festations and the quality of materials used in engineering works.

First Speaker: Ing. Julio Timerman, 1st Vice President Director, IBRACONJulio Timerman received his degree in civil engineering from the University of São Paulo, São Paulo, Brazil, in 1977. He has been an Associate Director at the engineering consulting firm Engeti - Consultoria e Engenharia Ss Ltda since 2007, and is a Professor of reinforced and prestressed concrete bridges at the University São Francisco, Itatiba, Brazil. He is the former President and current Vice President at IBRACON. He worked as Consultant for several highway concessions (AutoBAn, NovaDutra, ViaOeste, SPVias, Colinas, Intervias, Ecovias dos Imigrantes, Cart, BRVias), where he acted in rehabilitation projects for bridges, in more than 400,000 m² of

decks. He has designed more than 200 bridges, featuring the most varied structural conceptions, and has

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Wednesday, July 14, 2:00-3:00 pm São Paulo Time / 1:00-2:00 pm Detroit TimeCo-Host Organization: Instituto Brasileiro do Concreto (IBRACON)

worked as Consultant for the rehabilitation of historical buildings, implementing museums, such as the Soccer Museum in Pacaembu Soccer Stadium in São Paulo, SP; the Museum of Tomorrow in Rio de Janeiro, RJ; and Museum Frevo in Recife, Pernambuco, in Brazil. He is a member of the Council of the Brazilian Association of Bridges and Great Structures (ABPE) and ACI Subcommittee 318-L, International Liaison. He received the Emilio Baumgart Award for Structural Engineer of the Year in Brazil in 2005, and the Gilberto Molinari Award in 2009 for services to IBRACON.

Presentation Title: Sirius, Accelerating the Future of Brazilian Science The Brazilian Synchrotron Light Laboratory (LNLS) is part of the Brazilian Center for Research in Energy and Materials (CNPEM), in Campinas, SP, a private nonprofit organization under the supervision of the Ministry of Science, Technology, and Innovation of Brazil (MCTI). The purpose of this presentation is to show the main important aspects of structural design and construction of this unique building.

Second Speaker: Ing. Prof. Enio Pazini Figueiredo, 2nd Vice President Director, IBRACONProf. Enio Pazini Figueiredo is a Civil Engineer and has worked as a Full Professor in the School of Civil and Environmental Engineering at the Federal University of Goiás, Goiás, Brazil, since 1995. He teaches construction materials, concrete durability, pathology and therapy of constructions, and concrete structures rehabilitation. He did his specialization in pathology of constructions at the Eduardo Torroja Institute of Construction Sciences (IETCC), Madrid, Spain, in 1988; he received his MSc from the Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil, in 1989; and his DSc from the Sandwich Program/CNPq between

the University of São Paulo, IETCC, and Aston University, Birmingham, UK, in 1994. In 1998, he made an improvement course on advanced technologies for construction sponsored by the Japan International Cooperation Agency (JICA), and in 2009, he was Visiting Professor in the postdoctoral program at the Norwegian University of Science and Technology (NTNU), Trondheim, Norway. He is a former President of ALCONPAT Brasil and is currently Vice President of IBRACON and ALCONPAT International. He is co-editor and co-author of the three ACI Special Publications on High-Performance Concrete (ACI SP-207, ACI SP-229, and ACI SP-253). He co-authored three books on concrete structures repair and maintenance published in México, Colombia, Brazil, and Spain, and co-authored two books on materials construction and concrete published by IBRACON. He has published more than 100 papers in international congresses and journals including NACE International’s CORROSION Journal, Cement and Concrete Research, RILEM’s journal Materials and Structures, Concrete Plant International, IBRACON’s Concreto e Construções, Journal of Civil Engineering and Architecture, Journal of Materials in Civil Engineering, Revista de la Construcción, Key Engineering Materials, Construction and Building Materials, IETCC’s Materiales de Construcción, AATH’s Hormigón, Advances in Materials Science and Engineering, IBRACON’s Structures and Materials Journal, UFRJ’s Matéria, and the Australian Journal of Basic and Applied Sciences. His research interests include durability of cement-based and sustainable concretes with mineral admixtures and demolition residue, repair materials and techniques, corrosion of steel in concrete, and nondestructive techniques for evaluating concrete structures. He has been a consultant of important works in Brazil and Latin America. He has received awards and recognition for his technical and scientific contributions within Brazil, Venezuela, México, Paraguay, and Perú. In 2013, he received an honorary doctorate from the Scientific University of Peru (UCP), Iquitos, Peru.

Presentation Title: Maracanã for the 2014 World Cup and Olympics 2016: The Largest Work of Rehabilitation of Reinforced Concrete Structures in the WorldThis lecture discusses the evaluation methodology used to diagnose the durability problems of the concrete structures of Maracanã Stadium; the materials, techniques, and rehabilitation procedures employed; and the significant amounts of materials and rehabilitation procedures used in this emblematic rehabilitation work.

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Hosted by the American Concrete Institute • July 13, 2021

Wednesday, July 142:00-2:50 pm Santiago Time / 2:00-2:50 pm Detroit Time

Co-Host Organization: Instituto del Cemento y del Hormigón de Chile (ICH)

Website: https://ich.cl/

Local Moderator: Augusto Holmberg, General Manager, ICHAugusto Holmberg is a Civil Engineer from the University of Chile, Santiago, RM, Chile. He is the General Manager at the Chilean Cement and Concrete Institute (ICH) and has more than 30 years of experience in the concrete industry. He has been involved in ACI activities for more than 25 years, serving on the ACI Board of Direction and as a member of Joint ACI-ASCE Committee 550, Precast Concrete Structures, and ACI Subcommittees 318-L, International Liaison; 318-S, Spanish Trans-lation; and 550-B, ITG T1.22.

First Speaker: Mario Lafontaine, Partner and Director for New Technologies, René Lagos Engineers

Mario Lafontaine is a Structural Engineer from the University of Chile. Currently, he is Partner and Director of seismic technologies at René Lagos Engineers. He has worked on seismic design of different projects around the world and has participated on several Chilean Seismic Codes Committees, including Earthquake Resistant Design of Buildings (NCh433), Reinforced Concrete Design and Analysis Requirements (NCh430), and emergency seismic design code changes after the 2010 Maule Earthquake (DS 60).

Presentation Title: The Quest for Resilience: The Chilean Practice of Seismic Design for Reinforced Concrete BuildingsThe satisfactory structural behavior observed during large earthquakes and the high seismicity of the country has conditioned the Chilean society to expect immediate occupancy performance level for their buildings under these extreme events, although the seismic design code in Chile mandates only a scope of life safety performance level. Based on observational and statistical evidence from recent strong earthquakes in Chile, it is concluded that the observed seismic resilience of buildings is a consequence of limiting damage, considering that operational performance and life safety are different challenges that require different approaches. Furthermore, to provide society with resilient and safe buildings, both challenges must be met simultaneously and not alternatively. This presentation describes the concepts, strategies, and future challenges in the context of the Chilean practice, and describes several lessons learned from the design of thousands of concrete buildings that have experienced earthquakes with a magnitude of 8.0 and higher with limited damage. These lessons have proven to be effective in ensuring resilient structural performance under extreme seismic events.

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Wednesday, July 14, 2:00-2:50 pm Santiago Time / 2:00-2:50 pm Detroit TimeCo-Host Organization: Instituto del Cemento y del Hormigón de Chile (ICH)

Second Speaker: Juan Pablo Covarrubias, General Manager, TCPavementsJuan Pablo Covarrubias is General Manger at TCPavements. He is responsible for developing and creating the business model for the TCP® pavements, which is a patented technology that was developed, marketed, and patented in over 80 countries and currently operates in Chile, the United States, Guatemala, Colombia, and Peru. He is in charge of promotion, design, sales and product implementation, negotiation with potential agents in other markets, research and development of variations, and new associated technologies. He has written over 15 publications regarding the TCP® technology in international conferences and has directed 10 undergraduate

thesis degrees at the University of The Andes, Bogotá, Colombia, and the University of Santiago, Chile, Santiago, RM, Chile. He has presented the TCPavements technology in over 150 companies in the field of pavement construction in over 15 countries and has exhibited in over 30 seminars, including conferences from the Transportation Research Board (TRB); the International Society for Concrete Pavements (ISCP); the American Concrete Pavement Association (ACPA); the Federal Highway Administration (FHWA); the European Concrete Pavement Association (EUPAVE); and the Ministry of Public Works for Chile, Peru, the United States, Malaysia, Singapore, Guatemala, and China. He is also Project Manager of the TCP design software OptiPave® and OptiPave2®. He has designed the interior f loors of more than 30 industrial projects using the latest tech-nologies for this type of construction, including solutions for post-tensioned shrinkage-compensating concrete, plastic and metal fibers f loors, strategically reinforced f loors, and small slab f loors for curling control, delivering customized solutions according to the needs of the client. He is also a Director of ISCP and is in charge of the members committee.

Presentation Title: Pavements with Optimized Slab Geometry: Lessons Learned from 15 Years of PerformanceIn 2005, a new concept in concrete pavements was developed: concrete slabs with optimized geometry. This technology is based on designing the concrete slabs so that no more than one wheel or set of wheels will be loading the same slab at any time. This causes the slabs to work in a different way than usual, decreasing stresses and allowing a reduction in thickness, as compared to a traditional concrete pavement design—all without reducing its lifespan and increasing its fatigue resistance. Since 2005, there have been important developments of this technology. With more than 8 million m2 in application, 200 projects across 10 countries, the technology has been used in many different climates and loading conditions. All this information has helped to calibrate and understand the behavior of this new system. This presentation shows the most important things we have learned in the last 15+ years.