Optimizing of MassDOT’s High Performance Asphalt Overlay (HPOL) Mixtures

Massachusetts Department of Transportation (MassDOT) and municipalities within Massachusetts are interested in utilizing new technologies that enhance the resiliency of their pavements because increased resiliency extends the service life of the road network. One method to enhance road resiliency is to use high performance asphalt overlays (HPOL) as a pavement preservation/rehabilitation strategy. Mixtures used in HPOL are generally required to meet enhanced performance characteristics compared to traditional dense graded hot mix asphalt (HMA). To allow for innovation and healthy competition, MassDOT has been exploring the possibility of allowing contractors to choose between placing HPOLs either as an Asphalt Rubber Gap Graded (ARGG) mixture, a Superpave High Performance (HP) surface course mixture, or a stone matrix asphalt (SMA) mixture. The main interest of MassDOT is to determine if using a HP or a SMA mixture will provide the same (or better) performance and life cycle costs/benefits as compared to the ARGG mixtures in which it has more experience. MassDOT also wishes to evaluate and modify its existing ARGG and HP specifications, when utilized for designing HPOL mixtures. Overall, this study will allow MassDOT to optimize the use of HPOL mixtures and improve road resiliency.

Language

  • English

Project

  • Status: Active
  • Funding: $249997
  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Principal Investigators:

    Mogawer, Walaa

  • Start Date: 20210701
  • Expected Completion Date: 20230930
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01781167
  • Record Type: Research project
  • Source Agency: Massachusetts Department of Transportation
  • Files: RIP, STATEDOT
  • Created Date: Sep 1 2021 3:52PM