Surface Aggregate Classification of Reclaimed Asphalt Pavement

The use of Surface Aggregate Classification A (SAC-A) aggregates has increased significantly to over 1.9 million tons annually to meet the friction demand of pavements. The challenge to TxDOT, is to develop specifications, methods, and means to conserve our existing SAC-A resources. The goal of this project is to determine if potential exists to conserve SAC-A resources by adding friction value to reclaimed asphalt pavements (RAP) while not having any detrimental effects with mix quality. This project will synthesize the state-of-the practice for use of RAP in surface mixes and associated skid resistance and durability. This project will also evaluate field test sections to identify how RAP affects skid resistance. Furthermore, researchers will select and characterize multiple RAPs and then evaluate the impact of different RAP types and amount on both skid resistance and durability of different types asphalt mixes. Based on the results of both laboratory and field works, the research team will develop SAC rating for RAP and guidelines for using RAP in surface mixes. To foster technology transfer, this project will develop a training presentation and perform two (2) workshops to TxDOT engineers.

Language

  • English

Project

  • Status: Active
  • Funding: $377280
  • Contract Numbers:

    0-7025

  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Managing Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Pete, Kevin

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Zhou, Fujie

  • Start Date: 20190628
  • Expected Completion Date: 20211031
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01713064
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-7025
  • Files: RiP, STATEDOT
  • Created Date: Jul 30 2019 3:04PM