vol. iii no.2 for private circulation
TRANSCRIPT
TECH MANTRA 1
Vol. III No.2
For Private Circulation
TECHNICAL MAGAZINE
TECH MANTRA2
The Ramco Cements Ltd“Auras Corporate Centre” I Floor,
98A, Dr. Radhakrishnan Road, Mylapore, Chennai - 600 004
Phone : 044-28478666, 28477582 Email : [email protected]
Editorial Committee
Advisory Board Mr. A.V. Dharmakrishnan
Mr. Balaji K. Moorthy
Honorary ChairpersonDr. Bhanumathi Das
EditorEr Anil Kumar Pillai
MembersEr Shashank Sharma
Er SurajEr Muthu Ganesh
Er Chandi Prasad MohantyEr Venkatesh Pulavarty
Er FarishEr Ravi G
Er SreenidhEr Arijit Maity
For Private Circulation
Vol. III No.2
ContentsChairman’s Message 3 High Performance And Cost Effective Concrete With RamcoSuper Grade And PC Admixtures 4 Customer Feedback 10 RAMCO Initiatives 11
Global Scenario of utilizaton of construction and demolition waste 12
Engineers Day Celebrations 18
Technical support to the construction professionals 21 Collaboration with Construction Professionals : Seminars and meetings 22 Precast Units – RAMCO Super fast for excellent quality Precast elements 24 Collaboration with Civil Engineering Institutions 28 Dry Mix Products : Major Projects & Customers 31 A Tribute to Dr C.S.Vishwanatha – Structural Engineer, Professor, Consultant and the key force behindthe Association of Consulting Civil Engineers ( ACCE) 32
TECH MANTRA 3
P R Ramasubrahmaneya RajhaChairman & MD
Dear friends,Greetings from Ramco !
The latest budget by the Government indicates a major boost to the infrastructure . As part of the Prime Ministers campaign of “ Make in India” the government recognizes the importance of concrete roads . It is well known that constituents of bituminous road comprises of crude which is imported. The government has plans to build 5 km of concrete road per day which would be a boost to the Indian Cement Industry which is presently grappling with the challenge of poor demand . Cement is increasingly being used in road construction as it is seen that Concrete roads are the best from the perspective of being maintenance free , less vulnerable to water or oil seepage and is also less polluting . Experts are of the view that concrete roads score better over bituminous roads on many qualitative aspects . Therefore from both technical and socio - economic perspectives the government bodies at all levels are encouraging use of concrete in road construction.
In spite of the global slowdown our country is expected to accelerate the implementation of various reforms envisaged by the government. This calls for incorporation of the latest practices in construction. Therefore blending of best global practices can go a long way in enhancing the quality of construction in India . For maintaining quality in concrete construction and increasing the productivity we are observing change in concreting practices in some of the major projects. Our RRDC ( Ramco Research & Development Centre) at Chennai continues to be involved in designing concrete mixes for various types of construction which has helped those construction professionals who are willing to implement the best concreting practices in India.
To continue support to the construction fraternity we have attempted to bring in innovative range of construction products which can serve the needs of various project personnel. In this direction our Dry mix Plant is manufacturing a wide range of products based on the requirements of various prestigious projects . Our dry mix team have been successful in manufacturing customised products suited to the needs of the project for non structural application. We have been continuously working with the construction professionals to understand their requirement through MACE division - our Technical Services department .
We invite you to give articles and feedback on enhancing our service level so that our partnership with construction professional like you is strengthened.
Chairman’s Message
TECH MANTRA4
High Performance And Cost Effective Concrete With Ramco
Super Grade And PC Admixtures
Chemical admixtures are materials in the form of powder or fluids that are added to the concrete to improve the rheological, strength and durability properties. The common types of admixtures are accelerators, retarders, plasticizers, super-plasticizers, air-entraining, water proofing, corrosion inhibitors etc. The chemical admixtures classification as per ASTM, IS and BS are given in Table-1 The super-plasticizers are classified as under (1):1. Modified & Refined Lignosulphonates :- Derived from neutralization, precipitation, and fermentation processes of the waste
liquor obtained during production of paper-making pulp from wood
2. Sulphonated Naphthalene formaldehyde (SNF) condensates (1960-Japan):- Produced from Naphthalene by oleum or SO3 sulphonation; subsequent reaction with formaldehyde leads to polymerization and the sulphonic acid is neutralized with sodium hydroxide or lime
3. Sulphonated Melamine formaldehyde (SMF) condensates (1970-Germany):- Manufactured by normal resinification of Melamine formaldehyde
4. Polycarboxylate (PC):- Free radical mechanism using peroxide initiators is used for polymerization process in these systems
Gambhir M L (2010)(2) describes in his book that the sulphonated Melamine formaldehyde condensates tend to reduce air entrainment , resulting in a mix which may be more prone to bleeding and segregation. The sulphonated Naphthalene formaldehyde condensates gives greater level of set retardation and air entrainment, thus significantly improves the workability. The increase in the level of air entrainment is too low to affect the cohesiveness of the mix, so a high sand content is desirable with the high workability mixes to prevent bleeding and segregation. The lignosulphonates give the greatest workability retention but conversely, they give the most set retardation and, therefore, generally give the lowest 1-day strength. The polycarboxylates are used to produce concrete with very high workability and low slump loss. However, they are not used much because of the greater cost.
By GAB Suresh, Manager-R&D,
Ramco R&D Centre, (RRDC), A Division of The Ramco Cements Limited
ASTM C 494 IS : 9103 BS - 5075
Type A : Water reducing AcceleratorsPart-1
Accelerating
Type B : Retarding Retarders Retarding
Type C: Accelerating Plasticizers (WR) Normal water reducing
Type D : Water reducing and retarding Superplasticizers (HRWR) Accelerating water reducing
Type E: Water reducing and accelerating Air-Entraining Retarding water reducing
Type F: water reducing high range -Part-2
Air-Entraining
Type G: Water reducing high range and retarding -
Part-3
Superplasticizing and retarding
ASTM C 260- -
Air- Entraining
Table 1: Comparative Chart of BS, IS and ASTM standards on Chemical Admixtures
TECH MANTRA 5
Need of Chemical Admixtures in Concrete: 1. Increase workability
2. Flowability and Pumpability of fresh concrete
3. High strength /High Early Strength concretes
4. Reduce the cost of concrete construction.
5. Maintaining the quality of concrete during the stages of mixing, transporting, placing, and curing in adverse weather conditions.
6. Highly Reinforced Concrete
7. Controlled setting time
8. Expansion or shrinkage compensating
9. Freeze thaw resistance
10. Damp proofing
11. Corrosion inhibition
12. Durable Concrete
13. To overcome emergencies during operations
Major factors, which contribute to the inadequacy or incompatibility of chemical admixtures in the concrete:1. Generic type of the admixture
2. Admixture specifications and its properties
3. Quality of the admixtures and consistency of its quality from batch to batch
4. Incompatibility of one admixture with another if more than one in use at a time
5. Dosage of admixtures and its sensitivity in overdosing and mode & time of dosing
6. Failure to modify the dosage of admixture if the site conditions demand due to changes in the ambient conditions of temperature, %RH, Wind velocity etc.
7. Contamination through water or aggregates
8. Physical and Chemical Properties of cements or Cementitious
9. Water to cement ratio
10. Type and characteristics of aggregate and its grading
11. Concrete mix design w.r.t. ingredient contents
12. Ambient temperature
13. Incomplete or non-uniform mixing
14. Lack of adequate curing of concrete
15. Change of source materials
16. Inadequate wetting of the concrete mix ingredients prior to admixture addition
Mechanism of action of super-plasticizers:Super-plasticizers improve workability and reduce water requirement in concrete mixes by mainly two methods, (1)
Electrostatic Repulsion and (2) Steric Hindrance. The mechanism of action of superplasticizers on cement particles is shown in Fig.1. First method is the formation of repulsive electrostatic forces on cement particles, which will move away from each other and disperse in the aqueous medium. The grinding of cement results in the ground particles having a surface charge (zeta potential). The adsorption of the admixture leads to a decrease of the zeta potential, and eventually causes like charges (negative) on the cement particles. The second is the formation of admixture molecules on solid particles, which create a steric hindrance causing spatial distance between particles and hence decreases probability to their adhesion in the aqueous medium. These two actions prevent the agglomeration of particles and create a dispersing effect which facilitates the availability of more surface area for cement particle interaction. Naphthalene, Melamine and modified lignosulphonates are known to cause effect by electrostatic repulsion whereas the PC based admixtures by steric or spatial hindrance.
Steric hindrance is a more effective mechanism than electrostatic repulsion. The side chains, primarily of polyethylene oxide extending on the surface of cement particles, migrate in water and the cement particles are dispersed by the steric hindrance of the side chains. Electrostatic repulsion depends on the composition of the solution phase and the adsorbed amount of the superplasticizer (greater the adsorption, better the repulsion). On the other hand, steric repulsion depends on the length of main chain, length and number of side chains. In the case of PC based admixtures, initial slump is based on main molecule length and slump retention is based on number of side molecules and its length. Because of the steric
TECH MANTRA6
repulsion mechanism, PC admixtures are generally more effective than the sulphonate based admixtures, and generally do not experience much problems at low water to cement ratios.
Trouble-free and Cost-effective Concrete with PC Admixtures Technical Literatures are saying that Polycarboxylate (PC) based admixtures are the most effective and suitable for all type
cements, all grade concretes and in all climate conditions. PC admixtures can work at lower dosages, low water cement ratio than Naphthalene, Melamine and Lignosulphonate admixtures. PC admixtures can reduce water content in concrete as much as 40%. Thus, they are highly preferred to make high and ultra high strength concrete, where the w/c may be as low as 0.20. Generally, these admixtures exhibit excellent slump retention characteristics and do not cause any delay in the gain of strength of the concrete. The slump loss of super-plasticized concretes at room temperature with PC and Naphthalene based admixtures as shown in Fig.2.
The downside of PC admixtures is their high cost. Since PC works even at low water content, for same grade, concrete can be re-designed up to 5% cement content reduction with slightly increase admixture dosage, thus concrete will attain better workability & strengths and high durability, lower shrinkage, creep and heat of hydration without affecting the overall cost of
Fig.2 The slump loss of super- plasticized concretes at room temperature with PC and Naphthalene based admixtures
Fig.1 Mechanism of action of super-plasticizers on cement particles
TECH MANTRA 7
Fig.3 The Schematic diagram of the effect of super-plasticizers on fresh and hardened concrete(3)
the concrete. The Schematic diagram of the effect of super-plasticizers on fresh and hardened concrete is shown in Fig.3. From the diagram it is observed that out of five options, II-option i.e. reduced total water and cement content plus super plasticizer is the best option for better rheological, strength and durability properties of the concrete.
To understand the behavior of different types of admixtures with cement collected Naphthalene, Mid Range PC and High Range PC admixtures each three numbers which are using in the different Projects and RMC Units. Initial compatibility studies were conducted with Miniature Slump Test (Fig. 4). The test results of the same are given in Table 2. Based on the miniature slump tests’ flow and cement paste compressive strength test results, M45 Grade Concrete trials were conducted with identified suitable and most effective admixtures. The test results of the same are given in Table 3. The materials’ physical properties are shown inTable 4 & 5.
Fig.4 Preliminary Evaluation of Admixtures Compatibility study with Miniature Slump Test (4).
TECH MANTRA8
Table 2: Ramco Super Grade (RSG) Cement Paste Flow Studies with different types of admixtures by Miniature Slump Test
Admixture Details
w/c
Adm
ixtu
re
Dos
age
(%) Cement Paste Flow
(cm)
Cement Paste Compressive
Strength (MPa)
Admixture Solid Content (%) pH 1½ hr. 2.0 hr. 1-Day 3- Days
High Range PC Admixtures (HRPC)
HRPC - 1 38.82 6.74 0.36 0.60 13.7 13.4 2.8 31.4
HRPC - 2 26.14 7.51 0.36 0.60 4.7 - 5.7 32.9
HRPC - 3 38.24 6.36 0.36 0.60 14.4 14.4 10.5 43.4
Mid Range PC Admixtures (MRPC)
MRPC - 1 26.74 6.96 0.36 0.80 14.5 14.2 2.3 42.8
MRPC - 2 31.32 6.39 0.36 0.80 14.9 14.523.7 (2D)
1-D (Wet)37.1
MRPC - 3 24.75 6.30 0.36 0.80 13.8 12.732.4 (2D)
1-D (Wet)47.3
Naphthalene Admixtures (SNF)
SNF-1 36.91 8.42 0.36 1.20 10.8 10.623.4 (2D)1-D (Wet)
38.6
SNF-2 44.68 8.37 0.36 1.20 14.1 14.120.1 (2D)1-D (Wet)
31.3
SNF-3 42.25 8.90 0.36 1.20 10.2 8.0Upto
2 days wet20.9
MIX
NO
Batch weight in SSD condition per cu.m of concrete (kgs)
Adm
ixtu
re d
etai
ls
Compressive Strength (MPa)
Ram
co S
uper
G
rade
Rive
r
Sa
nd
Coarse Aggregate
Wat
er (
w/c
)
Adm
ixtu
re (%
)
1 D
ay
3 D
ays
7 D
ays
12 -mm
20 - mm 1½ hr.
1 450 783 419 613 162 (0.36) 5.40 (1.20)Naphthalene
(SNF-2)85 - 10.6 32.0 42.2 55.9
2 450 783 419 613 162 (0.36) 5.40 (1.20)Naphthalene
(SNF-1)140 84 13.6 31.1 43.9 57.5
3 450 783 419 613 162 (0.36) 3.60 (0.80)Mid Range PC
(MRPC-1)
195 72 18.7 36.4 39.0 61.2
4. 435 796 426 623 157 (0.36) 4.13 (0.95) 190 155 18.4 38.2 46.4 64.7
5 450 783 419 613 162 (0.36) 2.03 (0.45)
High Range PC
(HRPC-3)
205 205 20.2 33.0 48.6 64.7
6 435 796 426 623 157 (0.36) 2.39 (0.55) 205 185 21.3 37.0 49.1 62.1
7 425 810 434 634 149 (0.35) 2.76 (0.65) - 220 26.4 46.9 50.1 69.5
Table 3 M45 Grade Concrete Trials’ Mix Proportions and test results with RAMCO Super Grade (RSG) and Suitable Admixtures
28 D
ays
2.0 hr.
Slump (mm)
TECH MANTRA 9
Table 4: Physical Properties of Materials
Description RSG Cement River Sand 12mm Aggregate 20mm Aggregate
Specific Gravity 2.86 2.60 (SSD) 2.79 (SSD) 2.72 (SSD)
Water Absorption (%) - 0.97 0.51 0.47
Aggregate Impact value (%) - - 22.5 21.7
Bulk Density (Loose) (kg/m3) - 1623 1388 1416
Bulk Density (Compacted) (kg/m3) - 1739 1565 1578
Flakiness Index (%) - - 27.3 14.69
Elongation Index (%) - - 36.2 23.4
Table 5: Fine and Coarse Aggregate Sieve Analysis
Coarse Aggregate Fine Aggregate (River Sand)
Sieve Size(mm)
Percentage Passing Sieve Size(mm)
Percentage Passing
12.5mm 20mm
20 100 92.59 10 100
16 100 52.01 4.75 93.11
12.5 96.88 9.24 2.36 82.69
10 61.56 0.79 1.18 62.73
6.3 3.74 0.15 0.6 30.84
4.75 - - 0.3 5.31
- 4.75 - - 0.15 1.04
CONCLUSIONS:M45 Grade Concrete with Ramco Super Grade has attained 28 days compressive strength about 125 percent when compared
to Concrete Grade Target Strength i.e. 53.3 MPa.Based on the Miniature flow and strength test results, High Range PC-3, Mid Range PC-1, and Naphthalene SNF-1 admixtures
performed better than other similar type of admixtures. But concrete with High Range PC-3 or Mid Range PC-1 admixture shows better performance than concrete with Naphthalene SNF-1 admixture
Based on M45 grade concrete trials test results, it is observed that the concrete with 0.45% dosage of High Range PC-3 admixture was attained good slump and strength when compared to 0.80% dosage of Mid Range PC-1 admixture mixed concrete and 1.20% dosage of Naphthalene SNF-1 admixture mixed concrete.
M45 Grade Concrete redesigned with optimum Ramco Super Grade content and High Range PC-3 admixture (Mix-No.7) for better rheological & strength properties and also durable and cost effective concrete.
Based on the above experimental data and available literature, it is better to use PC based admixtures to exhibit fewer compatibility problems when compared to Naphthalene, Melamine and Lignosulphonate admixtures. With effective and efficient optimum mix designs, makes the concrete more cost effective and durable.
Chemical admixtures alone cannot solve all the strength and durability requirements and it is the complementary understanding between supplementary cementing materials and chemical admixtures that can strike the deal.
The chemical admixtures are gaining momentum in the context of various new developments such as multi-component cementitious systems, high volume fly ash concrete, Self Compacting Concrete etc. The heightened awareness for durability of concrete also contributes for the enhanced demand for chemical admixtures.
The need for sustainable development in construction industry demands the use of high volumes of Blended Cements / supplementary cementing materials such as fly ash and slag which need to go with Super- plasticizers.
References1. Santhanam M, and Gettu R (2011) “Investigation of Compatibility Issues between Cements and Water Reducing Chemical
Admixtures”. Ref No SR/S3/MERC/29/2006. 2. Gambhir M.L “Concrete Technology-Theory and Practice” published by Tata McGraw Hill (2010). Pg 99-101.3. Ramachandran V S (2002) “Concrete Admixtures Hand Book- Properties, Science and Technology” Standard Publishers
Distributors, pg 287.’ 4. Kantro D I (1980) Influence of water reducing admixtures on properties of cement pastes” A Miniature Slump Test, Cement,
Concrete and Aggregates, 1980, Vol.2, pp 95-102
TECH MANTRA10
GREEN LAND , Ramnattukara , Kerala MACE teams services at our site during concreting are
highly appreciable. Also the quality of RAMCO SUPER GRADE is excellent .
- Ashraf Parol
Reg No. E-2050/08/2404 /KKD/112/2010/SA
Issued by Dept of Urban Affairs Government of Kerala
T.C.MAHSOOM & ASSOCIATES , CALICUT DISTRICT , Kerala
Quality , Consistency , Supply and After Sales services at our project by RAMCO CEMENTS is momentous
- T.C.MAHSOOM
LIVING SPACES , Kalpetta , Kerala RAMCO CEMENT is used in many projects designed and
constructed by us . We are satisfied with the quality . The technical department gave us good support
- Er Bijoy Antony
GREEN VALLEY CONSTRUCTIONS ,
Kalpetta , KeralaI have been using RAMCO CEMENT for the last 14 years
for various civil engineering projects particularly in buildings. I am personally satisfied with the performance of your cement.
- M.C. Sebastian
NEW PLATOON GRANITES AND MARBLES , Thrissur , Kerala
I am running hollow/solid block unit since 2004. I am very happy to state that the performance and result of RAMCO SUPERFAST is excellent .
- Managing Partner
MD Rakhi Interlock blocks & Hollow Bricks , Malapuram , Kerala
We are using RAMCO Cement for the last one year in our Company . We are happy to inform you that the product and service provided by RAMCO are appreciable
- P.Unnikrishnan
GALAXY Interlock & Pavers We are satisfied with the quality of product and the service
rendered by the Technical team . The percentage of damages in blocks is negligible.
- Sulaiman Kutty
PRECIS CONSTRUCTIONS – ENGINEERS & CONTRACTORS – Kozhikode , Kerala
I am using Ramco Super grade for the past seven years in all my construction works . Generally I use M20/M25 concrete mix and am fully satisfied with workability , strength and finish . I am also happy with the Technical support by the Company
- Suresh Kumar
QUALITY Interlock & Hollow Bricks,
Kozhikode , Kerala I have used number of brands available in the market . I
could find that no other brand has the quality to compete with RAMCO CEMENT in the following aspects :
Setting time Strength Finishing
- Sunil Kulangara
C.K.Musthafa – Contractor , Badagara , KeralaFor the past 7 years I have been in the field of construction
where I have used number of brands . I have found that Ramco Supergrade and Ramco Superfast are better than other brands
- C.K.Musthafa
CUSTOMERS FEEDBACK
VVR Construction , Karur , Tamil Nadu I have been using RAMCO Cement for the past 5 years . The cement gives
better results when compared to other brands . I use RAMCO Cement for all buildings and thank the Technical team of RAMCO for their support .
- Er Ramesh
COGIPRO Design & Construction , Karur ,Tamil Nadu MACE van services are very good. Compressive strength of concrete
cubes using RAMCO cement are excellent .
- Er Elamathi, ME ( Structures)
TECH MANTRA 11
RAMCO InitiativesOur CMD being
felicitated by Hon’ble Union Minister of State for Commerce and Industry Nirmala Sitharaman at the ICAI SIRC conference held at Madurai on Dec 13, 2014.
The Ramco Cements Limited, Alathiyur Unit received 15th National Award for ‘Excellence in Energy Management 2014’ & ‘Most Useful Presentation Award’ from Confederation of Indian Industry (CII) at Hyderabad on Oct 30 2014. The Chief Guest, K Pradeep Chandra, IAS, Special Chief Secretary, Telangana State presented the Awards.
Construction Professionals of West Bengal with our President ( Marketing )
Our CMD handed over a cheque for Rs. 2 crores to Hon. Chief Minister N Chandrababu Naidu towards Hudhud Cyclone Relief Fund. Seen along with CMD are Vice Chairman and CEO
Alathiyur
TECH MANTRA12
Global scenario of utilization of construction and demolition waste
Job Thomas1 and Wilson P.M. 2
1Reader, 2M.Tech. student
Division of civil Engineering, School of Engineering, Cochin University of Science and Technology, Kochi, Kerala, India, Pin 682022, e-mail Id: [email protected]
Abstract:
The utilization of construction and demolition (C&D) waste for future construction is the need of the day. The management of construction waste is important for sustainable development, which is the thrust area of research today. Due to increased environmental concerns, land filling of construction and demolition waste is prohibited in many countries. This paper overviews the scenario of construction and demolition waste management system practiced in various countries.
Key Words: C&D waste, management, land filling, utilization
IntroductionIn almost every part of the world, construction industry is considered to be the biggest in terms of its consumption of natural
resources. The various aspects of civilizations are understood based on the evidences of constructions built by them. Each civilization had a construction history that fostered its growth and quality of life. Initially construction works were accomplished by the muscle of man and beast. Later with mechanization, construction industry achieved a very fast pace contributing significantly to the rapid growth of the society. It resulted in a large scale increase in the quantum of construction. The construction and generation of waste is both sides of the same coin and they cannot be separated. It may not be worthless to mention that it is the improper management of material resources in construction industry that results in the enormous increase in the generation of construction waste all over the world. The quantum of generation of waste in construction can be controlled by appropriate management.
By developing an appropriate waste management policy, it is possible to improve overall efficiency of the project, which results in economy too. In developed countries, waste management has become a profession and many construction firms associate with companies which excel in C&D waste management. The waste management is also an environmental concern and implementation of standards and law is not far. Hence, it is important to initiate educating and practicing various C&D waste management methods for those who are employed in various levels of construction industry.
Construction and Demolition (C&D) Waste
Bulk Generators Small Generators
• Roads • Bridges • Flyovers • Flats • Parks • Malls
•
• Houses • Small Buildings
Fig 1 Sources of C&D waste generators
TECH MANTRA 13
C&D Waste production scenarioAll over the world, the growth of construction industry is enormous in the past decade. The pace of generation of C&D waste
is also significant. In general, there are two sources for generation of waste materials, namely, bulk generators and retail or small generators. The classification of sources is given in Fig 1. The infrastructure development sector and real estate sector are the bulk generators of waste. Construction and repair of roads, bridges, flyovers etc. are classified under infrastructure development sector. Real estate sector consists of housing, industrial, and commercial building construction .Small commercial enterprises and individual house building teams are considered as retail or small generators. The contributors of C&D waste in a project are given in Fig 2. The project activities are to be planned at every stage by every personnel, who are involved, to minimize the overall waste generation.
Contractor
Owner
Logistics Designer Supplier
Procurement
Manufacturer Site management
C&D WASTE
Fig 2 Contributors of C& D waste in a project
Global scenario of waste management On an average 10 to 20 percent of the materials purchased in a construction project is left as a waste. The environmental
impact due to left-over and/ or generated wastes at different stages while implementing a project needs serious consideration. This aspect should be considered from the stage of extraction and processing of raw materials, manufacturing and transportation building products, construction of building and disposal at the end of a building’s useful life (Resource venture, 2005). The stages of the waste generation and its management in connection with construction project are given in Fig 3.
Fig 3. Stages of waste generation – environmental impact
In this context, it is appropriate to have a bird eye view of the volume of C&D waste generated in different countries. This would help to understand the importance of need of waste management plan.
In 2004-05, C&D waste generation was 15.1 million tonnes in Australia, of which 7.6 million tonnes was recycled and 7.5 million tonnes was residual waste used as landfill. In 2006–07, 16.6 million tonnes of waste was generated from the C&D stream. Further, in 2008-09, 19 million tonnes of C&D waste was generated out of which 10.47 million tonnes were recycled thus yielding natural resource recovery rate of 55 percent from C&D stream (Smith et al., 2012).
In United Kingdom, around 101 million tonnes of inert waste materials from construction, demolition and excavation were generated in 2008. In addition to this, 86 million tonnes of waste has been generated by mining and quarrying operations. In
Environmental impact connected with waste disposal
Raw material
• Extraction • Processing
Building products
• manufacturing • Transportation
Building
• construction • demolition
TECH MANTRA14
spite of availability of sophisticated technologies for recycling CD&E waste, it is estimated that over 25 million tonnes a year are disposed of in landfill sites (defra, 2011).
About 136 million tonnes of C&D waste was generated in the United States of America during 1996. C&D wastes account for about 22 percent of the total waste generated in the country. Out of this, approximately 92 percent of all C&D waste is from demolition and renovation (Franklin Associates, 1998).
In Japan, 85 million tons of C&D waste was generated in 2000, of which 85 percent has been recycled or reused. The quantity C&D waste generated was 76 million tonnes in 2005 and a recycling ratio of 0.92 had been achieved. (Shiro Nakajima Building Research Institute, 2009).
In Netherlands, more than 15 million tonnes of C&D waste is being produced annually, out of which, 80 percent is concrete and crushed brick wastes. Eighty five percent of this waste is being recycled and reused in road construction or in concrete. (Hendriks and Janssen, 2001).
In China, rapid urbanization results in high rate of production of C&D waste. The C&D waste is found to be about 30 to 40 percent of the total waste produced in the country. Recycling rates are also dependant on a variety of factors including maturity of the local recycling industry, landfill and recycling drop-off fees, landfill bans and cost of raw materials (Zhao et al., 2010).
In 2002, 3.3 million tonnes of C&D waste was generated in Canada. Out of the total C&D waste, only 16 percent was reused or recycled. (Canadians Home Builders association-CHABA, 2010)
In India C&D waste management has given least priority (TIFAC, 2002)
Present practices of waste disposal and related issuesFig.4 illustrates the C&D waste handling practices currently adopted worldwide and the related issues. The
construction industry derives numerous benefits by proper handling of C&D wastes.
Fig.4 C&D waste handling practices and related issues.
Construction industry is unable to grab appropriate economic and environmental benefits owing to several reasons which need detailed analysis. Barriers for widespread adoption of waste management system are (Jain, 2012)
Lack of awareness in the industry: The main reason for the enormous quantity of waste generation is the improper handling of material resources. In most cases, the architects, consultants or construction labors neglect the environmental and economical cost aspects of construction wastes. The basic principle of ‘reduce waste’ is very often neglected by them.
Lack of interest from the clients: Majority of the clients are interested only in those activities which offer tangible benefits to them. The potential savings in cost by adopting waste management system is not given due importance. While considering timing to be the most important milestone to be kept with, the feasibility of reuse and recycling are often neglected.
Lack of proper training and education: Lack of professional institutions in the country which could significantly bring in the awareness among the clients and contractors about the potential economic, social and environmental benefits is yet another barrier in adopting a proper waste management system.
Lack of skilled labour: Majority of construction labour involved in the industry is unskilled. Because of this proper
Practices
Re-usable items sold at discount in
market
Non re-usable items for land filling
Extra transportation cost
Antique value not considered
Reduced salvage value
Environmental impacts neglected
Public resistance
No value addition by recycling
Issues
TECH MANTRA 15
waste handling methods are not adopted. This emphasizes the need for creating awareness and skills in the labour.
Lack of market competition: Presently, there is lack of competition among the contractors in deriving the potential economic benefits from C&D wastes. The cost savings achieved by a contractor by implementing waste management techniques in a project are not often accounted. Waste reduction and recycling techniques are not widely adopted for this reason.
Lack of Government interventions: There is considerable laxity on the part of the Government in promoting waste management techniques. For example, those who make cost savings on account of proper and efficient waste management are not given any incentives. This has to be viewed based on the principles of Life Cycle Costing and minimization of energy utilization.
Lack of waste reduction approach by architects: A significant reduction in the quantum of waste can be achieved by adopting proper design methodology. The role of designers and architects is particularly important in this aspect. Design for deconstruction, adopting principles of modular co-ordination etc. will definitely reduce wastes from the construction industry.
Practicing self-regulation is a powerful factor for C&D waste management. In several developed countries, many associations in the building products and materials industry issue guidelines and offer assistance to their member companies to achieve better production and consumption outcomes by minimizing the resource consumption with the motto ‘doing more with less (Jeffrey, 2011)
The 3R conceptThese factors promoted governmental agencies to find ways to encourage the reuse and recycling of C&D waste. However
prevention is more beneficial than recycling. Identifying potential waste early in the design process decreases waste generated during construction. It is worth to note that if waste is not going to be created, a plan for reuse or recycle is not a requisite. Three strategies in the 3R concept to handle the C&D waste and the related issues are:-
Reduce: Potential wastes can be identified early in the design process itself and measures should be taken during design stage to minimize the waste that may generate. Waste reduction can be achieved by:
1. Design with standard sizes for all building materials:
2. Design spaces to be flexible and adaptable to changing uses: This avoids potential waste generation during remodeling.
3. Design for deconstruction: This would allow high reuse and recycling rates to achieve. The dis-entanglement of systems, materials bolted together instead of glued, a construction and deconstruction blueprint, use of non hazardous materials and highly recyclable materials etc. are a few techniques that can be suggested in this regard.
Reuse: This involves identification of waste that can be salvaged for reuse on the current project or another project or that can be donated. The initial costs for deconstruction services may be offset by returns from salvaged materials or reduced purchasing costs. Some deconstruction services also fetch a tax deduction for materials that are donated in many developed countries. Fig.5 shows a comparison of new and salvaged materials used in construction industry which illustrates the potential cost saving.
Recycle: After adopting all the options to prevent waste, salvage and reuse materials, the next step is to recycle as much of the remaining debris as possible. Recycling saves money by minimising disposal costs. It reduces waste going to the landfill, facilitates a cleaner and safer construction site, improves community relations, protects the environment, reduces pollution problems owing to wastes and protects health of construction labour.
Methods like demolition by blasting etc were evolved as a result of such negligence or ignorance of 3R concepts. The environmental and economical cost aspects of C&D waste shall be seriously considered before taking a decision for land filling. The 3R concept is vital for a sustainable development. With the increased interest in recycling demolition waste materials, newer demolition procedures have been evolved which preserve building materials which can be reused and allow for the separation of waste materials for recycling. In selective demolition, the valuable materials are removed by hand for reuse or recycling. This procedure is sometimes expanded into complete deconstruction or selective dismantling, where the entire building is taken apart piece by piece (Edge environment Pty Ltd, 2011).
Green building conceptGreen building or green construction or sustainable building refers to a structure that uses process which is environmentally
responsible and resource-efficient throughout a building’s life-cycle. The energy efficiency is to be accounted for in every stage, namely, site selection, selection of material, construction, operation, maintenance, renovation and demolition. A green building is the outcome of joint efforts of the design team, the architects, the engineers, and the clients at all project stages. By adopting green building practices, it is possible to achieve comfort, utility, durability and economy with minimum harm to the environment. Recently newer technologies are being developed day by day to create greener buildings, with the objective to reduce the overall impact of the built environment on human health and the natural environment. Following are the basic objectives of
TECH MANTRA16
green building concept (MNRE and ADaRSH, 2012)
Reduced energy consumption without sacrificing the comfort levels
Reduced destruction of natural areas, habitats, and biodiversity, and reduced soil loss from erosion etc.
Reduced air and water pollution
Reduced water consumption
Limited waste generation due to recycling and reuse
Reduced pollution loads
Increased user productivity
Enhanced image and marketability
A green building concept involves serious consideration of various steps from the design to disposal. The following strategies generally adopted in green building construction are given in Fig 6.
Fig 6 Green building construction strategies
Selection of energy efficient materials should also be one of important aspect. For ex: Blended cements and concretes need to be used instead of OPC cement and concrete. Similarly fly ash bricks need to be deployed in the place of energy-intensive clay bricks. Their input is high in terms of volume, thus help in Green Building concept.
Measurement and approvalGreen buildings are being certified based on certain rating program by different agencies. The internationally accepted one
0
20
40
60
80
100
brick wood steel GI sheet aggregate
Rela
tive
pri
ce c
ompa
red
to n
ew (%
)
New
salvaged
Fig 5 Relative price of salvaged and new building materials
Strategies for green buildings construction
Follow Adopt
Regional development plans
Building bye laws
Codes and standards
Integrated design approach
Local/ materials & technologies
Renewable energy technologies
Energy efficient technologies
TECH MANTRA 17
is being the United States Green Building Council (USGBC). Leadership in Energy and Environmental Design (LEED) is the green building rating program sponsored by the USGBC. In India, Green buildings are rated by Green Rating for Integrated Habitat Assessment (GRIHA). It has been developed by The Energy and Resources Institute (TERI) and is endorsed by the Ministry of New and Renewable Energy (MNRE).
Leadership in Energy and Environmental Design (LEED) consists of a suite of rating systems for the design, construction and operation of high performance green buildings and neighborhoods. LEED is intended to provide building owners and operators a concise framework for identifying and implementing practical and measurable green building design, construction, operations and maintenance solutions. The specialty of LEED is that it is an open and transparent process where the technical criteria proposed by USGBC members are publicly reviewed for approval by the almost 20,000 member organizations. LEED awards project one, two or three points for achieving a 50, 75 or 90 percent recycling rate respectively. A project can also earn one or two points for using salvaged, refurbished or reused materials for 5 or 10 percent of building materials respectively.
Summary The maximum effort should be made to reuse and recycle the waste and to minimize the volume going to landfills. A
widespread adoption of proper waste management techniques can save huge amount of money which would otherwise go to landfills. This can also conserve non-renewable mineral resources offering intangible benefits towards sustainable development. Promoting Green Buildings will definitely mitigate the issues that arise from C&D wastes.
References:Barker, A.V. and Bryson, G.M. (2002). “Bioremediation of heavy metals and organic toxicants by composting”, Scientific World
Journal, 2, 407–420.
Canadians Home builders association-CHABA (2010) “CHBA Policy Position on C&D waste Management and Extended Producer Responsibility” Retrieved from: http://www.chba.ca/uploads/policy%20archive/2010/ epr&wastemanagementpolicyposition-mar3-10.pdf on 07.11.2013
defra, (2011) “Waste Data Overview” , Department for Environment, food and rural affairs, UK Retrieved from: http://webarchive.nationalarchives.gov.uk/20130123162956/http:/www.defra. gov.uk/statistics/files/20110617-waste-data-overview.pdf on 07.11.2013
Edge Environment Pty Ltd (2011) “Construction and Demolition Waste Guide – Recycling and Re-use across Supply Chain”, retrieved from http://www.environment.gov.au/system /files/resources/b0ac5ce4-4253-4d2b-b001-0becf84b52b8/files/case-studies.pdf on 20.11.2013
Franklin Associates (1998) “Characterization of building-related construction and demolition debris in the united states”, Report No. EPA530-R-98-010, The U.S. Environmental Protection Agency, USA Retrieved from: http://www.epa.gov/osw/hazard/generation/sqg/cd-rpt.pdf on 07.11.2013
Hendriks C. F., Janssen G.M.T. (2001) “Reuse of construction and demolition wastes in the Netherlands for road constructions”, HERON, 46(2), 109-117 Retrieved from: http://heronjournal.nl/46-2/4.pdf on 07.11.2013
Jain M., (2012) “Economic aspects of construction waste materials in term of cost savings- A case of Indian construction industry”, International Journal of Scientific Research Publications, 2(10), 1-7.
Jain M., (2012) “Economic aspects of construction waste materials in term of cost savings- A case of Indian construction industry”, International Journal of Scientific Research Publications, 2(10), 1-7.
Jeffrey C. (2011) “Construction and Demolition Waste Recycling- A Literature Review” Retrieved from : http://www.dal.ca/content/dam/dalhousie/pdf/sustainability/Final%20C% 26D%20literature%20review.pdf dated 20.11.2013
MNRE and ADaRSH (2012) “The Little Book of GRIHA Rating”, Ministry of New and Renewable Energy, Government of India, retrieved from http://www.grihaindia.org/static/Griha%20Rating%20Booklet_Dec12.pdf on 20.11.2013
Resource Venture (2005) “Construction Waste Management Guide”, Retrieved from resourceventure.org/free-resources/get-started/.../CWM%20Guide.pdf on 20.11.2013
Shiro Nakajima Building Research Institute (2009) “Thing on going and done in Japan”, Retrieved from: http://www.iip.kit.edu/downloads/2009_Nakajima_Report_Japan.pdf on 07.11.2013
Smith K., O’Farrell K, Brindley F. (2012) “Waste and recycling in australia 2011, department of sustainability, environment, water, population and communities”, Hyder Consulting Pty Ltd , Australia. Retrieved from: http://www.environment.gov.au/system/files/resources/b4841c02-229b-4ff4-8b3b-ef9dd7601d34/files/waste-recycling2011.pdf on 07.11.2013
TIFAC, (2000). “Utilization of waste from Construction Industry”, Department of Science & Technology New Delhi. Retrieved from: http://www.tifac.org.in/index.php?option =com_content&view=article&id=710&Itemid=205 on 07.11.2013
Vilas, N. and Guilbetro, B. (2007), Construction and Demolition Waste Management: Current Practices in Asia, Proceedings of International Conference on Sustainable Solid waste Management, Chennai, India , 97-104.
Zhao, W., Leeftink, R. B. and Rotter, V. S. (2010). “Evaluation of the economic feasibility for the recycling of construction and demolition waste in China: The case of Chongqing”. Resources, Conservation and Recycling, 54(6), 377-389.
TECH MANTRA18
ENGINEERS DAY celebrations
Bangalore Engineers day celebrations in Bangalore was attended by a large group of construction professionals which included the following :
Consulting Engineers from Madurai Centre
Consulting Engineers from Coimbatore Centre
Consulting Engineers from Hyderabad Centre
Chief Engineers/Deputy Chief Engineers from BMRCL , RITES , Karnataka Rural Infrastructure Limited
COO and construction professionals from Brigade Group
Construction Professionals from B.G.Shirke , Adarsh Developers , Sobha , Corporate Leisure
The two technical lectures during the occasion were delivered on the following topics :
1. “Metro construction –world scenario ” by Prof Mahesh Tandon of M/s Tandon Consultants
2. “Chemical – mineral combination coatings ” by Mr Barry Jackson , Technical Director Trencrom consultants, Dubai.
Mr M.R.Jaishankar CMD of the Brjgade group was the Chief guest for the event .
Mr. Jaishankar -CMD Brigade Group addressing the Engineers
Mr. R .Sundaram -CMD Sundaram architects addressing the gathering
Mr. Barry Jackson –Consultant delivering the Technical lecture for the event
Prof Mahesh Tandon of M/s Tandon Consultants giving a technical presentation
TECH MANTRA 19
MYSORE Engineers Day was celebrated at Mysore by The RAMCO Cements ltd with ACCE(I)
Chief Guest Mr Rajashekhar Kotti , Er A. Prakash with the team from Association of Consulting Civil Engineers and RAMCO Cement at Mysore
Civil Engineering Professionals of Mangalore with the RAMCO team
Er Bapu Satyanarayana- Consultant , Mysore and Dr B.S.Basavarajaiah , Former Principal KREC being felicitated at Mysore
Felicitation of Er Jayaram Shetty , Er Raviraj Thalithaya and Er Anil V. Balliga
Engineers Day Celebrations at Mangalore, The Ramco Cements Limited in Collaboration with Association of Consulting Civil Engineers, Mangalore centre Celebrated
Engineers Day 2014 on 16-09-2014 at Hotel Ocean Pearl to mark the Birth Anniversary of Sir Mokshagundam Visvesvaraya . This was followed by inauguration of TECHNO-WEEK 2014.
The Honorable Mayor of Mangalore City Corporation , Mr Mahabala Marla Inaugurated the Techno-week 2014 by lighting the lamp. Dr. Niranjan Chiplunkar, Principal, NMAM Institute of Technology was the Chief Guest of the evening.
Felicitation:Er. Jayaram Shetty, Consulting Engineer & Er. Raviraj Thalithaya were honored with Eminent Engineers Awards.
Er. Anil V Baliga, was honored with Anantha Mithra Kalbavi Award.
THE RAMCO CEMENTS LTD presented a Technical Talk on Green Buildings & Present trends.
TECH MANTRA20
Dr K.S.BabuNarayan , Professor – Department of Civil Engineering , NITK , Surathkal delivered a technical talk on ANALYZING ANALYSIS during the TECHNOWEEK 2014
Ramco Cements thanks the following Resource persons of Association of Consulting Civil Engineers for having given talks in various Engineering Colleges in Mangalore
Dr.Chinnagiri Gowda Er.Vijay Vishnu Mayya
Er.Prem Prasad Er.Arun Prabha
Er.Anil Baliga Dr.Sunil B.M
Er.Anil Hegde Er.Ekanath Dandakeri
Dr.M.K.Nagaraj Er.Rajendra Kalbavi
Er.Manjunath S.B Er.Siddhesh.Kamat
Dr.Subhash Yargal Er.Premanand Shenoy
Er.Raghavendra Holla.
LENSFED ( Licensed Engineers & Supervisors Federation) Meeting at Kollam :Engineers from Kollam attended LENSFED meeting where a presentation was made on TRENDS IN CONCRETE TECHNOLOGY.
There was a discussion amongst the Engineers on various aspects of concreting , RAMCO SUPER GRADE , RAMCO SUPERFAST and RAMCO BLOCKFIX
LENSFED conducted their annual meeting at Kollam which was attended by Civil Engineers of Kollam
TECHNO WEEK 2014, Mangalore With the purpose of motivating Civil Engineering students The Ramco cements Limited collaborated with Association of
Consulting Civil engineers, Mangalore centre and conducted 30 no’s of Student Seminar and site visits in various Engineering and Polytechnic Colleges in Mangalore Sector .
The Techno Week-2014 concluded with a grand Valedictory function on 25-09-2014 where all the Speakers were felicitated with an Award of appreciation for motivating young Civil engineers through Knowledge sharing.
Valedictory function for The Techno Week - 2014
TECH MANTRA 21
Mace Engineer conducting slump test at site
Rebound hammer test at a site in odisha
Mace Engineer in West Bengal inspecting the concreting
MACE van arriving at a site in Bangalore whose owner is - Mr. Nagendra rao
TECHNICAL SUPPORT TO THE CONSTRUCTION PROFESSIONALS
TECHNICAL SERVICES TEAM – MACE ( MASONS, ARCHITECTS , CONTRACTORS, ENGINEERS) Our Technical Services team – MACE DIVISION - has been rendering technical support to all construction professionals –
Masons , Architects , Contractors and Engineers .
In order to ensure that good quality concrete is made we help these professionals by evaluating the quality of concrete through various concrete tests which are as follows :
1. SLUMP TEST: Slump test to measure the workability of concrete
2. CONCRETE CUBE MOULDS: Concrete cube mould are filled so that compressive strength of concrete cubes can be tested at the nearest Civil Engineering College
3. REBOUND HAMMER: Rebound Hammer test to evaluate the compressive strength of concrete beyond 28 days
4. MIX DESIGN SUPPORT: Mix Design support through our R& D – RRDC ( RAMCO RESEARCH DEVELOPMENT CENTRE)
5. TIPS FOR CONCRETING: We also give suitable tips to construction professionals which enables them to make good quality concrete like effective methods of curing, using cover blocks for enhancing durability in concrete structures.
TECH MANTRA22
COLLABORATION WITH CONSTRUCTION PROFESSIONALS:
SEMINARS AND MEETINGS INSTALLATION OF OFFICE BEARERS OF INDIAN CONCRETE INSTITUTE ( ICI) AT PUDUCHERRY
CONSUMER AWARENESS PROGRAM AT DINDIGUL
CIVIL ENGINEERS MEET AT TANJORE
STALL AT BUILD EXPO , THIRUVANNAMALAI
CONTRACTORS MEET AT RAJAPALAYAM
Office bearers of ICI , Puducherry
Consumers Awarness program held at Thandigudi, Dindigul
Practicing Civil Engineers Technical meet at Pattukottai, Tanjur Mkt
RAMCO CEMENTS Stall at Build Expo – Thiruvannamalai
Leading Contractors Technical Meet at Rajapalayam
TECH MANTRA 23
SIVAGANGAI ENGINEERS VISIT TO RAMCO CEMENT PLANT
Sivagangai Disitrict Civil Engineers Alathiyur Factory visit
ENGINEERS CONFERENCES IN ODISHA Engineer Conference at Berhampur
Private consultants along with some major Engineers from various Govt. Dept. I,e, PWD, PHD, BMC, Irrigation, R&B, RD had attended the conference and had participated actively in the discussion after the conference.
Er. Manas Kumar Das (Sr. Scientific Officer-Govt. testing Lab) , Er. Jayanarayan Nanda (AEE-Irrigation), Er. Sankar Sen Das (Head-QC, BAM, L&T,) Er. M. R Gouda were the key Engineers in that conference.
Engineer Conference at Jajpur Private consultants along with some major Engineers from various Govt. Dept. I,e, PWD, PHD, BMC, Irrigation, R&B, RD had
attended the conference and had participated actively in the discussion after the conference.
Er. Prashant Dash (DRDA Engineer), Er. Prahallad Das (Municipality), Er. Pradeep Kumar Ratha (R&B) were the key Engineers in that conference.
Engineers meet in Odisha
CONCRETING AT KARUR ENGINEERING COLLEGE , TAMIL NADU
Concreting at Karur Engineering College using RAMCO cement
Inputs from Technical Services team : Muthuganesh – Senior Manager, Pon Prabhu – Assistant Manager , Jagadeesan –Assistant Manager, Chandi Prasad Mohanty – Deputy Manager
TECH MANTRA24
Precast Units –RAMCO SUPER FAST for excellent quality
Precast components
Tamil Nadu
Coral Concrete Products Pvt Ltd
Feedback on RAMCO superfast
We have been doing business with THE RAMCO CEMENTS LIMITED for the past two years and during this tenure, your commitment towards product quality, delivery schedules and follow – ups have been really professional. We had always got our materials on time and satisfying our quality norms.
Wishing your team a very best and willing to work with RAMCO in future as well….
R.Maheshwaramoorthy.M.E.,
Managing Director
ABOUT CORAL CONCRETE PRODUCTS PVT LTD
Coral Concrete Products was started to support the infrastructure growth in the Construction Industry in the vicinity of Coimbatore . The manufacturing facility is equipped with latest technology, semiautomatic Plant having vibratory force of 100KN coupled with compressive force of 32 MPa Raw material silos with complete accurate weigh batching systems is used to support for higher capacity.
Coral Concrete Products are complied with BIS standards and also as per customer requirement . They are designed to be accurate in dimensions, excellent finish, durable strength, aesthetic appearance with optimum cost.
RANGE OF PRODUCTS
Solid blocks ( 9 MPa) - 8” ( 400x200x200) ; 6”( 400x150x200) ;4”(400x100x200)-GRADE D
Hollow Blocks ( 9 MPa) - ; 6”( 400x150x200)
FlyAsh Bricks( 7 MPa) :230 x 110x75
Paver Blocks ( 40-60MPa) : Circular ( 75-80mm); Unipaver ( 75-80mm) ; 1 Pattern ( 75-80mm)
Automation inside the CORAL PLANT Loading of blocks at the Plant premises
TECH MANTRA 25
Venkateswara Hollow Blocks – RSF ( RAMCO SUPER FAST ) in block casting
Venkateswara Hollow Blocks ,our customer at Mettupallayam , Coimbatore manufacturers blocks and supplies it to his reputed customers in the area.
The Proprietor Er Nanada Kumar started the unit in the year 2012. He believed in adopting machinery and equipments to ensure that good quality blocks are made.
Production capacity in the unit is enhanced due to adoption of technology where blocks of various types and sizes are cast.
Some of the typical sizes of solid and hollow blocks and production schedule for 8 hours is as shown below:
4” x 6” x 13” 12000.Nos( Solid blocks) 4” x 8” x 16” 9000.Nos ( Hollow blocks)
6” x 6” x 13” 10000.Nos( Solid blocks) 6” x 8” x 13” 6000.Nos ( Hollow Blocks)
6” x 8” x 16” 7000.Nos ( Solid Blocks) 8” x 8” x 12” 7000.Nos( Solid blocks)
Some of the good practices in casting of blocks can be observed in this unit .
Enhancing production of quality blocks through automation of all process
Blocks laid in a straight line after casting
Block Making Machines- SRS Finlay f44
Machinery for lifting of blocks
Blocks covered to aid in curing – Avoiding evaporation loss
Owner of the unit Er Nandakumar
TECH MANTRA26
Sri Balaji Tiles , Villupuram District , Tamil Nadu Sri Balaji Tiles , our customer manufacturers Concrete Roof Tiles , Designer Tiles , Wall Tiles , Paver Blocks , Cover Blocks
and various concrete tile products. Their products are certified by ISO 9001:2008 .
FEEDBACK : The feedback of the proprietor , Mr Sridharan on RAMCO SUPERFAST were as follows:
“We are satisfied by the quality of RAMCO SUPERFAST and the advantage of using RSF were as follows:
Faster curing time
Good finishing
Quicker setting
Less Admixture consumption
Good strength and durability
Increased Productivity
Higher Compressive Strength ”
ISO Certification for products manufactured by SRI BALAJI TILES
Range of Products manufactured using RSF
A view of tiles manufactured at the unit RAMCO CEMENT used for casting lightweight blocks of density 600 to 800 kg per cubic metre at TIGER LIGHTWEIGHT BLOCKS, MYANMAR
Pavers manufactured using RSF
Mr Sridharan , Propreitor of Sri Balaji Tiles
TECH MANTRA 27
Kerala Precast Units in Kerala have been using RAMCO SUPER FAST for various precast items like solid/hollow blocks, Paving blocks,
Windows /door frames and ornamental blocks .
RAMCO SUPERFAST is a special cement for Precast units manufactured as per IS 8041 – Rapid Hardening Portland Cement.
Precast Manufacturers in Kerala are using RAMCO SUPER FAST in their manufacturing units as it helps them in making a mix for precast items which is cohesive , has high rate of gain of strength , is consistent in quality and one which gives excellent finish.
AMCON Pavers & Projects Pvt Ltd at Ernakulam who has been using Ramco Super Fast for manufacturing of precast items .
Automation in manufacturing of precast units
Paving block stacked at an unit in Kerala where RAMCO SUPER FAST was used.
Blocks stacked in a precast unit
Interaction with precast manufacturers at Ernakulam , Kerala
MACE Van services are also available for precast manufacturers.
-With inputs from Mohan.T – AGM ( Marketing); Sreenidh – Assistant Manager ( Technical Services); Sanjeev Jayakumar – Assistant Manager ( Marketing); Jagadeesan – Assistant Manager ( Technical Services );
Pon Prabhu – Assistant Manager ( Technical Services)
TECH MANTRA28
Anna University Final year Civil Engineering Students from Anna University visited our RRDC on 6th September 2014 along with their Professor
Dr Ganapathy
The meeting was organised by Dr Ravi ( Anna University )
Mr Hayath Basha of Rehaan Construction addressed the students at our Research Centre . He gave practical tips to the students to become successful entrepreneurs in the construction industry .
The meet was organised by the Entrepreneurship division of Anna University headed by Dr Ravi
Collaboration With Civil Engineering
Institutions
Anna University Students during visit to RRDC – Ramco Research & Development Centre
Anna University Students during interactions with RRDC team
Prof ( Dr ) Ganapathy – Anna University and Mr Hayath Basha of Rehaan Constructions along with RAMCO team interacting with the budding Civil Engineers from Anna University
TECH MANTRA 29
Inauguration of Mason’s training program by RAMCO team
Masons ready for casting slab in West Bengal using RAMCO SUPER STEEL
Masons who undertook the training program with the team from RAMCO and the faculty of Aarupadai Veedu Institute of Technology, Chennai.
Our Mace Team clarifying queries from customers at one of the programs in South Tamil nadu
Inauguration of “Association of Civil Engineers“
AARUPADAI VEEDU INSTITUTE OF TECHNOLOGY , CHENNAI “Association of Civil Engineers “ was inaugurated by the RAMCO team at the campus of Aarupadai Veedu Institute of
Technology,Chennai.
A presentation was given by the RAMCO team to the students on the topic “ Professionalism in the Construction Industry – Role of budding Civil Engineers”
The principal of the Engineering College Prof Dr A. Prabhakaran and the Head of Department of Civil Engineering Prof S.P.Sangeetha interacted with the students .
MASONS TRAINING PROGRAM A training program for enhancing the effectiveness of Masons was organised at Aarupadai Veedu Institute of Technology,
Chennai .
The Masons were given training on various aspects of concrete and masonry work by RAMCO team and the faculty of the Engineering College where the Principal Prof Dr A. Prabhakharan shared his experiences.
The Masons who successfully completed the program were given certificates .
TECH MANTRA30
SASTRA UNIVERSITY
WORKSHOP AT SONA COLLEGE OF TECHNOLOGY , SALEM Engineers from MACE division have bagged 3 prize in a technical event conducted at "Sona college of technology" at a
workshop on "Health monitoring system of structures".
Inputs from Technical Services team : MuthuGanesh , Karthick Ganesh , Mohammad Moosa
MACE Engineers at the Valedictory function held at SONA COLLEGE OF TECHNOLOGY , SALEM
Seminar conducted at SASTRA University
TECH MANTRA 31
Dry Mix Products : Major Projects and Customers
Major projects where our dry mix range of products are used are as follows:
Project Dry Mix Product
Ruby Builders ,Chennai Ramco plastering Compound
HVP Realty Ramco Super Plaster
Klassic Projects, Bangalore Ramco Super Plaster
Sumudhra Project Ramco Block Fix
Sobha Developers ,Bangalore Ramco Tile Fix
Tata Consultancy Services Trivandrum Ramco Super Plaster
Tata Thrithvom ,Ernakulam Ramco Super Plaster
Projects where usage of dry mix range of products is approved :
Project Dry Mix Product
Reserve Bank of IndiaChennai Project
Ramco Super Plaster
Habitat Illuminair Ramco Super Plaster
Hiranandani ,Bangalore Ramco Tile Fix
Bosch Bangalore Ramco Block Fix
Karle , Bangalore Ramco Tile Fix
- Inputs from Mr Raghunath , Senior Manager Dry Mix
The RAMCO Dry Mix Plant at Sripermbudur in Chennai manufactures a wide range of products for the construction Industry. These products can be utilised effectively for a wide range of non structural applications These application range from plastering, fixing tiles, putty application and fixing blocks.
Over the years many reputed builders and project consultants have been recommending RAMCO dry mix products for their projects.
We have also customised the drymix products based on the needs of the customers. Few of the major projects/institutions who have either recommended or used our dry mix range of products are as follows:
A new variant Polymer Modified Plaster has been developed specifically for Reserve Bank of India ‘s project at Chennai. This has been tested at ICOMAT as per RBI norms.
A team of Engineers from Shapoorji Pallonji visited our dry mix plant in this regard.
A new product – RAMCO Block Fix – is developed which is used for bonding AAC( Aerated Autoclaved Blocks) /Solid blocks /Porotherm blocks.RAMCO block fix offers a better quality , better mason output which leads to cost effective solution to the customer Tata Thrithvom Project Ernakulam
TECH MANTRA32
The Construction Industry lost its mentor - Dr. C S Vishwanatha - on October 24th 2014 .
The stalwart was the key force behind the formation of Association of Consulting Civil Engineers and Civil Aid Technoclinic Pvt Ltd . The Association has been successful in fostering unity amongst structural Engineers , disseminating knowledge and also emerged as a single voice for the Structural Engineers Community across the nation .
We at RAMCO CEMENTS Ltd have been associated with the activities of Association for the past 7 years and had numerous opportunities to interact with Dr C.S.Vishwanatha. We deeply mourn the loss and pray for his soul to rest in peace.
About Dr C.S.Vishwanatha Dr C.S.Vishwanatha graduated in Civil Engineering with
distinction from Mysore Universityin 1960 and Obtained Master’s & Doctorate Degree in Structural Engineering from Indian Institute of Science, Bangalore.He served as a Member of Faculty at Indian Institute of Science, Bangalore during 1963-1980 and subsequently joined Torsteel Research Foundation in India serving as “Chief Executive” at Bangalore.His fields of specialization include Concrete Technology, Concrete and Steel Structures,Hydraulic Structures, Precast Constructions and Renovation / Restoration / Rehabilitation ofstructures.
Dr. Vishwanatha has published about 80 technical papers in National and International Journals, edited Torsteel Technical Bulletins during 1981-93 and co-authored Torsteel DesignHandbook published by Tata McGraw-Hill in 1988. He has received numerous awards /honor-
Awarded “ACCE Gaurav Award – 2000” by Association of Consulting Civil Engineers (India)for significant contribution to Civil Engineering Consultancy.
Honoured by India Chapter of American Concrete Institute in June 2003 for dedicated contributions in the field of “Reinforcements”.
Honoured with “ICI (KBC)-Birla Super Endowment Award” for being the “Outstanding Concrete Technologist” of Karnataka for the year 2003 by the Indian Concrete Institute, Karnataka-Bangalore Centre.
Honoured with “Vishveshavariya Construction Excellence Award – 2004” in March 2005 by M/s Construction and Business Records, Navi Mumbai for being an “Outstanding Engineer’
The structure “Sabhabhavana at Kudalasangama (North Karnataka)” designed by his organization under his guidance was awarded “ACCE Simplex Award” in September 2005 for being an “Outstanding Structure”.
He was awarded “National Design Award 2005” by Institution of Engineers (India) for outstanding contribution in the field of “Engineering Designs”.
He was awarded “ICI-L&T Lifetime Achievement Award” by Indian Concrete Institute during September, 2006 for his dedicated contribution in the fields of “Concrete Technology” and Concrete Structures” for the past three decades.
He was awarded ‘Bharatha Rathna Sir M Visvesvaraya Memorial Award’ for the year 2006 by Builders’ Association of India, Karnataka Centre, during October, 2006.
A Tribute to Dr C.S.Vishwanatha – Structural Engineer, Professor,
Consultant and the key force behindthe Association of Consulting Civil
Engineers ( ACCE)
Dr C.S.Vishwanatha addressing the construction professionals