Relating Asphalt Binder Fatigue Properties to Asphalt Mixture Fatigue Performance

Many pavement engineers and researchers believe that the current Superpave asphalt binder specifications do not adequately predict the contribution of binder properties to asphalt mixture fatigue performance. However, at present there is not a clear alternative method to measure the fatigue performance of asphalt binders and their contribution to mixture fatigue performance. It is widely accepted that the primary factor affecting the fatigue performance of asphalt pavements is structural design: the thickness of the various layers composing the pavement system. However, other factors, including the binder content, binder aging, and the chemical and physical characteristics of the asphalt binders used in the asphalt pavement layers, can significantly affect fatigue performance. If the properties that influence binder fatigue can be identified, characterized, and specified effectively, it may be possible to specify a binder that can improve the fatigue properties of the mixture. A more effective binder specification requires one or more specification tests that do in fact relate to fatigue performance. Research is needed to develop such measures of binder fatigue properties that are indicators of asphalt mixture performance.   The objectives of this research are to: (1) Determine asphalt binder properties that are significant indicators of the fatigue performance of asphalt mixtures. (2) Identify or develop a practical, implementable binder test (or tests) to measure properties that are significant indicators of mixture fatigue performance for use in a performance-related binder purchase specification such as AASHTO M 320 and M 332. (3) Propose necessary changes to existing AASHTO specifications to incorporate the identified binder properties and their specification limits. (4) Validate the binder fatigue properties, test(s), and changes to existing and/or proposed AASHTO test methods and specifications with data from field projects, accelerated loading facilities, or both, supplemented, as necessary, with data from additional laboratory-prepared specimens. This research shall emphasize the potential use of binder test equipment used currently in AASHTO binder test methods and consider a range of asphalt binder types, unmodified and modified, appropriately conditioned (i.e., aged), and with fatigue performance expected to vary widely. Field performance data for validation shall be drawn from existing sources such as accelerated loading facilities, LTPP Specific Pavement Studies (including SPS-10), Asphalt Research Consortium (ARC) field sections, and NCHRP Projects 9-47A, 9-49, 9-49A, 9-52, 9-53, 9-54, 9-55, and 9-58.    

Language

  • English

Project

  • Status: Active
  • Funding: $1000000
  • Contract Numbers:

    Project 09-59

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Harrigan, Edward

  • Performing Organizations:

    Advanced Asphalt Technologies, LLC

    108 Powers Court, Suite 100
    Sterling, VA  United States  20166-9321
  • Principal Investigators:

    Christensen, Donald

  • Start Date: 20150420
  • Expected Completion Date: 20181130
  • Actual Completion Date: 0
  • Source Data: RiP Project 37557

Subject/Index Terms

Filing Info

  • Accession Number: 01543422
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 09-59
  • Files: TRB, RiP
  • Created Date: Nov 14 2014 1:01AM