Investigation of Recycled Asphalt Pavement and Recycled Shingle Pavement Characterization Procedure & Development of Specification for Recycled Asphalt Pavement

Rising costs of asphalt binder have revived interest in incorporating reclaimed asphalt pavement (RAP) and reclaimed asphalt shingle (RAS) into mixes. RAP and RAS already contain asphalt binder and aggregates that should be accounted for in designing a new pavement. The issue that arises is how to characterize RAP and RAS to adequately account for the benefits of RAP and RAS material in a mix design. There are several techniques available for characterizing RAP asphalt binder. The most prevalent method is conducting an extraction and binder recovery followed by performance grading of the recovered binder. There are two issues of concern associated with this method; 1) costly toxic chemicals are required for conducting a recovery, and 2)cost required to appropriately dispose of extraction and recovery materials. Recently, there has been research conducted on the possibility of using mix tests to characterize RAP properties. Some of these tests have been used in conjunction with the Hirsch model to estimate effective binder grade. The proposed research is to investigate the feasibility and appropriateness of using a mix test to characterize RAP and aid in selecting a virgin binder.

    Language

    • English

    Project

    • Status: Completed
    • Funding: $320000.00
    • Contract Numbers:

      930-710

    • Sponsor Organizations:

      Alabama Department of Transportation

      1409 Coliseum Boulevard
      Montgomery, AL  United States  36130-3050
    • Project Managers:

      Lockett, Larry

    • Performing Organizations:

      Auburn University

      National Center for Asphalt Technology
      310 Sanford Hall
      Auburn, Alabama  United States  36849-5131
    • Principal Investigators:

      Kvasnak, Andrea

    • Start Date: 20070829
    • Expected Completion Date: 0
    • Actual Completion Date: 20090531
    • Source Data: RiP Project 14951

    Subject/Index Terms

    Filing Info

    • Accession Number: 01460188
    • Record Type: Research project
    • Source Agency: Alabama Department of Transportation
    • Contract Numbers: 930-710
    • Files: RiP, STATEDOT
    • Created Date: Jan 3 2013 1:20PM