national asphalt technology research & initiatives · (rap, ras, rubber) • construction &...
TRANSCRIPT
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NATIONAL ASPHALT TECHNOLOGY RESEARCH & INITIATIVES
Kent HansenKalamazoo, MI – March 29, 2016
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OVERVIEW
Unified Industry & Pavement Economics Effort Explained◦ Government Partnership
Pavement Economics Case Studies◦Deliverables◦Marketing and
Implementation
Pavement Performance
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Market Research &CommunicationsResearch & Technology
Deployment Activities
• Asphalt Institute• NCAT
Other Research
Future Research
DeploymentTask Group
Go-To-MarketTask Group
Pavement Economics Committee
Six Task Groups
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The pavement of the future… SystemSustainable
Smart- Resilient
What Does NAPA’s Pavement Economics Effort Mean?
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State Asphalt Pavement Associations
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Project Partners
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THETEAMS
Pavement Design
Environmental Sustainability
Best Quality and Competitiveness
Legislative
Pavement Type Selection
Pavement Preservation
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LEGISLATIVE
Highway Funding & National Legislation
State LegislationTracking
Market Analysis and Annual Report
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AID-PT Program
Accelerated Implementation & Deployment of Pavement Technologies Program (AID-PT)$12 million per year — $6 million for asphalt; $6 million for concrete
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AID-PT IMPACT
Provided training & advice to more than 11,400 pavement professionals.
Produced & distributed more than 100 technology transfer publications and articles.
Met and advised over 25 State DOTs on specific pavement issues
Knowledge exchange tour of Japan for asphalt industry and AASHTO representatives
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Partnership for Innovation in Asphalt Pavements
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Where to find the latest survey report:
www.asphaltpavement.org/recycling
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14
0%5%
10%15%20%25%30%35%
2009 2010 2011 2012 2013 2014
5% 11%19%
24%30%
32%
WMA UsagePercentage of Total Asphalt Production in US
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Resources on Recycled Materials
store.AsphaltPavement.org
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Environmental Sustainability
The RisksPavement Reflectivity Mandates
The Story on Pavement and Fuel Economy
Lack of Information on Smooth Roads and Sustainability & Performance
Quantifying Environmental Impact
The StrategiesAwareness of Multiple Variables
Further Develop Sound Data and Science
Partnerships for Sustainability
Lead Industry in Life Cycle Analysis
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Fuel Economy and Pavements
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• Utilizes LTPP Data• Free• Web Based
• Customizable• Life-Cycle Emission
Benchmarking
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Background — IRI Explorer
The IRI Explorer was created to allow users to easily interface with the LTPP data
• Easy-to-read graphs• Statistical rigor• Look at the effects of pavement selection on IRI
and vehicle emissions
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IRI Explorer — Tabs and Tools• Sections: Search for a single section and
look at its IRI performance over time
• Networks: Examine the performance of broad categories of pavement types within a regionalized network
• Pavement Comparison: Compare two pavement types. Many filters available to make specific comparisons
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IRI Explorer — Tabs and Tools• Emissions Estimator: Find the GHG
emissions associated with a roadway over its entire lifetime, including use, construction, and maintenance phases.
• Overview of Trends: A discussion of trends seen in the LTPP data.
• State Data: Houses additional data gathered by certain states. Access is limited to the funding agencies.
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IRI Explorer — Goals and Caveats• Goal: To let users craft their own queries
to the LTPP database; to see how different pavements perform in their region, application, road type, and so on
• Avoid making general assumptions from specific data sets
• All of engineering is trade-offs
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Quantifying the Asphalt Industry’s Environmental Impact
www.AsphaltPavement.org/EPD
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Education Program
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Pavement Design
The Challenges The SolutionsEconomics and Overdesign
Mechanistic-Empirical Pavement Design
Need for user friendly, AASHTO-based pavement design tool
Pavement Design Guidance
State-of-the-Practice for MEPDG Implementation & Challenges
Pavement Design & Material Improvements
Web-based Pavement Design Software
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Advancements in Flexible Pavement Design
http://ncat.us/files/research-synopses/synopsis14-04.pdfhttp://ncat.us/files/research-synopses/synopsis14-08.pdf
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paviasystems
AASHTO has been developing MEPDG for high volume roads, but a gap has developed for local roads and lower volumes Pavement Interactive
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paviasystems
Guiding Principles
• Provide accurate un-biased results…be a trusted resource
• Only ask the user for what is required to perform a technically sound design
• Where appropriate suggest industry accepted defaults to minimize user input
• Provide context sensitive help and guidance • Assume users aren’t pavement design experts
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paviasystems
Application Users
• State Transportation & Highway Agencies
• Local Government Agencies• A/E/C Firms• FHWA• Engineering Students• Foreign Companies &
Governments
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paviasystems
Approach: Web Delivery• Browser based delivery• Available via the web • Supports all kinds of
devices/OS– Desktops– Laptops– Tablets (7” – 10” - includes
iPad Mini on up.– Handheld device
capabilities• Easily scalable and
updatable
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paviasystems
Approach: Technical
• Provide technically sound designs using:– Flexible: AASHTO ’93– Rigid: AASHTO ‘93 w/ ‘98 Supplement– Parking lot guidance (Flexible only)
• Use industry accepted standards and guidance• Linkages to State and Local guidance• Linkages to Pavement Interactive
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PaveXpress Knowledge Transfer
1,650 people reached
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Over 9,000 Users!
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as of July 2015
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paviasystems
Future of
• Simplified mechanistic design for asphalt pavements
• Pavement cost estimating module
• Porous pavement design tool
• Suggestions?
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Pavement Preservation
The Challenges The StrategyFocus from construction to preservation
The value of the US highway and road system is estimated at $1.75 trillion
Preservation of the existing system is the challenge for pavement managers
Develop and place high quality Thinlay mixes
Improve cost competitiveness while maintaining quality & performance
Market Thinlays as an effective preservation method
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Thinlays for Preservation:From Drawbacks to Innovative Solutions• May have higher initial cost than other preservation
strategies.– Provide longer life– Thinner lifts– Use low-cost screenings and recycled materials
(RAP, RAS, rubber)
• Construction & application in cooler temperatures– Warm Mix Asphalt
• Durability versus permanent deformation– Higher asphalt contents– Engineered binders (e.g. polymer, rubber, etc.)
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www.ncat.us/files/reports/2013/rep13-05.pdfwww.asphaltpavement.org/ThinIsIn
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Driveasphalt.org
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New 2016 Projects
Improved Performance with Premium Materials
• Quantify the increased improvements in service life when premium materials are utilized:• Polymer Modification• High-Polymers• Stone-Matrix Asphalt• Rubber Modification• Additives
Porous Pavements
• Structural Design• Low Volume
Applications• Structural Value,
Thickness, Material Properties
• Mix Design• Investigate
Permeability and Scuffing Resistance
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Pavement Economics Webinars have reached about 400 people in two years.
UPCOMING WEBINARS
• Best Practices in Paving Series: Best Practices in Positioning Technology in Asphalt Pavement
• 2016 NAPA Legislative and Regulatory Policy Outlook
• Best Practices in Paving Series: Best Practices for Residential and Commercial Paving
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Pavement Performance
The Issues The FocusLong-term funding and lack of proper funding for preservation and maintenance
Possible dry mixtures with low asphalt content
Construction practices, lack of inspection, and need for training.
The StrategyPavement Performance Task Group
Issues and Industry Strategies
Partnerships
Recommendations for Ensuring Durability
Refocused Engineering Committee
Focus on Durability in Partnership with FHWA & SAPAs
Rethinking Asphalt Mixture Design & Simplifying Specifications
TRB WorkshopNAPA WorkshopFHWA Task Group
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www.asphaltpavement.org/midyear
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u