Characterization of Reclaimed Asphalt Pavement

The Massachusetts Department of Transportation (MassDOT) Section 450 Hot Mix Asphalt (HMA) Pavement specifications (November 1, 2010) limit the proportion of recycled asphalt pavement (RAP) to virgin aggregate for HMA base course mixtures and intermediate course mixtures to a maximum of 40 percent for drum mix plants and 20 percent for modified batch plants. The Section 450 specifications also allow contractors to use a maximum of 15% RAP in HMA surface course mixtures. Recently, due to increased prices for asphalt mixture materials, there has been an interest to increase RAP contents in HMA and warm mix asphalt (WMA) mixtures. This is due to the fact that RAP contains aged asphalt binder and aggregates which can replace a portion of the virgin materials required to produce new HMA or WMA mixtures. In order to determine the maximum amount of RAP that can be added to mixtures placed as the top layer in Massachusetts, this research is being undertaken to evaluate RAP and virgin binders being utilized in Massachusetts.


  • English


  • Status: Completed
  • Funding: $783997
  • Contract Numbers:


  • Sponsor Organizations:

    Federal Highway Administration

    Massachusetts Division
    55 Broadway, 10th Floor
    Cambridge, Massachusetts  United States  02142
  • Managing Organizations:

    Massachusetts Department of Transportation

    10 Park Plaza
    Boston, MA  United States  02116
  • Project Managers:

    McMahon, Patrick

  • Performing Organizations:

    University of Massachusetts, Dartmouth

    Department of Civil and Environmental Engineering
    285 Old Westport Road
    North Dartmouth, MA  United States  02747
  • Principal Investigators:

    Mogawer, Walaa

  • Start Date: 20170823
  • Expected Completion Date: 20191231
  • Actual Completion Date: 20200819
  • USDOT Program: Research and Development

Subject/Index Terms

Filing Info

  • Accession Number: 01690658
  • Record Type: Research project
  • Source Agency: Massachusetts Department of Transportation
  • Contract Numbers: 91905
  • Files: RIP, STATEDOT
  • Created Date: Jan 8 2019 11:16AM