Expand the Scope and Reach
of Infrastructure Innovation
Federal Highway Administration * Asphalt Research Consortium Association of Asphalt Paving Technologists
Expert Task Groups * Petersen Asphalt Research Conference
National Asphalt Pavement Association
Western Research Institute (WRI) is the lead contractor for research under the Asphalt Research Consortium. Based in Laramie, Wyoming, WRI is recognized for expertise in
asphalt material characterization, refinery operations, method development, validation, and transfer of knowledge and solutions to industry and governmental agencies.
Texas A&M Zachry Department of Civil Engineering and Texas Transportation Institute, the nation’s largest university-affiliated transportation research center, bring expertise in asphalt–aggregate interactions, modeling, mixtures design, non-destructive testing, field instrumentation, and engineered materials.
The University of Wisconsin-Madison Department of Civil and Environmental Engineering provides expertise in rheology, polymer modification of asphalt, pavement analysis and failure testing, instrumentation, structural and geometric design engineering, and constructability to advance new asphalt material solutions.
The University of Nevada-Reno Department of Civil and Environmental Engineering brings the resources of a leading program in transportation, pavement and materials, with specialized expertise in road-to-vehicle interaction and structural and geometric design engineering.
Advanced Asphalt Technologies, LLC (AAT), is a specialized engineering company in Sterling, Virginia, that brings expertise in asphalt materials testing, modeling, design and engineering, and fast-tracking new technologies and methods into commercial best practices.
u Methods for boosting the use of recycled asphalt pavement (RAP) for “green” roads
u Improved design procedures for warm mix asphalt (WMA) to lower greenhouse gas emissions
u Fatigue damage test using Dynamic Mechanical Analysis (DMA) to predict failure susceptibility
u Accurate Oxidative Aging Model to design long lasting and safer roads
u Six Comparative Pavement Performance Sites to calibrate and validate methods and models
u Models for Tire-Pavement Interaction to assess the impact of vehicles on pavements
u Laboratory Asphalt Storage Stability Test (LAST) for Polymer-Modified Asphalt to ensure the use of stable materials
u Automated Flocculation Titrimeter (AFT) to determine and assure asphalt stability
u Improved methods for recycling materials such as roofing shingles, polymers and crumb rubber in pavements to lessen environments impacts of road construction and waste disposal
u Improved understanding of warm mix asphalt (WMA) and new tests and specifications to assess life cycle cost and ensure performance
u Improved fatigue damage prediction and mitigation to improve longevity
u Improved thermal cracking prediction and mitigation to improve durability
u Improved methods to control reflective cracking in asphalt pavements
u Improved understanding of moisture damage in asphalt binders and effective treatments
Collaboration for Global Solutions
Asphalt Research Consortium partners are engaged in an international effort led by the Delft University of Technology (TU Delft) at Delft, The Netherlands, which brings together participants from The Netherlands, Sweden, Belgium, France, and the United States on the topic of self-healing in bituminous materials.
TU Delft and Western Research Institute are coordinating their respective studies of asphalt self-healing, while the Texas Transportation Institute at Texas A&M University and TU Delft are investigating crack formation and developing models to describe the cracking mechanics. The ultimate goal is to differentiate cracking that starts in the binder from cracking related to the asphalt–aggregate mix.
All on Board
Each January, usually following the annual meeting of the Transportation Research Board, WRI presents its Fundamental Properties Annual Project Review. WRI’s FHWA-sponsored Fundamental Properties research seeks to fill knowledge gaps and gain improved understanding of the mechanisms of asphalt pavement behavior and properties throughout the lifecycle of the road.
The Annual Review provides the FHWA and others with the latest developments in WRI research under the Fundamental Properties of Asphalts and Modified Asphalts contract.
Researchers and technologists from industry, state transportation departments, engineering firms and universities typically attend.
The following presentations were given at the Annual Project Review, Washington, DC, January 27, 2011. Click here to view the 2011 presentations.
Jean-Pascal Planche and Jack Youtcheff, “R&D Needs and Priorities: WRI & FHWA Perspectives”
Fred Turner, “Fundamental Properties III PI Overview”
Mike Harnsberger, “Comparative Performance Sites”
Mike Farrar and Ron Glaser, “Aging Kinetics and Material Property Prediction”
John Schabron, “Age-Related Embrittlement”
Troy Pauli, “Advances at the Nanoscale Applied to Modeling of Fatigue and Self Healing”
Shin-Che Huang, “RAP/RAS Aging and Compatibility”
Mike Farrar, “Warm Mix Asphalt Lab Aging”
John Schabron and Eric Kalberer, “Moisture Damage and Method Development”
Eric Kalberer, “Moisture Content in Warm Mix Asphalt ”
The Asphalt Research Consortium operates with direction and input from the FHWA and Expert Task Groups (ETGs) on Mixture and Construction; Binders; and Models. Expert Task Groups were created by FHWA to advise and comment on research being conducted under FHWA contracts. They are made up of representatives from state and federal government transportation departments, industry, and academia. Their review ensures that ARC research is aligned with users’ needs and priorities.
The following presentation was given at the Recycled Asphalt Pavement (RAP) Expert Task Group Meeting, October 26-27, 2010, Oklahoma City, Oklahoma .
Eric W. Kalberer, P. Michael Harnsberger, and A. Troy Pauli, “Reclaimed Asphalt Pavement Mixing and Compatibility”
The following presentations were given at the Expert Task Group Meetings, Phoenix, Arizona, March 14-18, 2011.
Mike Farrar, Will Grimes, Ron Glaser, Shin-Che Huang, Fred Turner, Mike Harnsberger and Mark Pooler, Binder ETG, “Laboratory−Asphalt Binder Short- and Long-Term Aging”
Ron Glaser, Mike Farrar, Shin-Che Huang and John Schabron, Models ETG, “Asphalt Aging and Fatigue”
Partnerships Start with Participation
WRI at the 2011Transportation Research Board Annual Meeting, Washington, DC, January 22-27, 2011.
Mike Harnsberger, Mike Farrar, Shin-Che Huang, and Raymond Robertson, “Comparative Field Performance Using Asphalts from Multiple Crude Oil Sources.”
Changping Sui, Mike Farrar, Mike Harnsberger, Bill Tuminello, and Fred Turner, “A New Low-Temperature Performance Grading Method Using 4 mm Parallel Plates on a DSR.”
Eric Kalberer and Elham (Ellie) Fini and Abolghasem Shahbazi, North Carolina A&T State University
“Biobinder from Swine Manure: Sustainable Alternative for Asphalt Binder” poster session.
WRI at the National Asphalt Pavement Association (NAPA), Orlando, FL, February, 2011.
Don Collins and the NAPA Governmental Affairs Committee on the future of asphalt research.
WRI at the Annual Meeting of the Association of Asphalt Technologists (AAPT), Tampa, FL, March 27-3, 2011.
Shin-Che Huang, moderator for a session on asphalt binders.
Jean-Pascal Planche with Ellie Fini, University of North Carolina, presented on biobinders from swine manure at the Leading Edge Workshop.
WRI at the Petersen Asphalt Research Conference, Laramie, WY, July 11-13, 2011. (Hosted by WRI.)
Ron Glaser, Mike Farrar, and Changping Sui, “Precision Inter-conversion of Shear Complex Modulus to Stiffness.”
Troy Pauli, Niki Kringos (TU Delft) and Tom Scarpas (TU Delft), “Thermodynamic Consideration of Damage and Self-Healing.”
John Schabron, “Chemical Changes in Binders Resulting from Oxidative Aging.”
WRI at the Pavement Performance Prediction (P3) Symposium, Laramie, WY, July 14, 2011.
Mike Farrar, “Predicting Oxidative Age Hardening in Asphalt Pavement with Time and Depth: A First Approximation.”
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Don Collins addresses the 2011 NAPA Annual Meeting.