Long Term Performance and Benefits of Combined Balanced Mix Design and Chemical WMA Technology

Asphalt mix durability has been a serious concern in Oklahoma for a long period of time. To address this and other issues (such as binder source variability, new binder modification materials, and recycled materials), balanced mix design (BMD) approach is being adopted by many state agencies. Different measures and additives have been tried to make the mixes pass rutting, cracking, and moisture damage requirements. One factor which has not been well investigated is chemical warm mix asphalt (WMA) technology when combined with BMD. Compared to hot mix asphalt (HMA), WMA is produced at the temperature of 275 F or lower. Consequently, significant amount of lighter oil component of asphalt binder is kept in the asphalt mix, which is beneficial to asphalt mix durability. However, combining BMD and chemical WMA technology has not been comprehensively evaluated in either laboratory or field. Thus, it is critical to evaluate the long-term performance and benefits of the combined BMD and chemical WMA technology, considering the potential of substantially extended pavement life with such technology.

    Language

    • English

    Project

    • Status: Active
    • Funding: $ 300,000
    • Contract Numbers:

      2288

      SPRY-0010(084)RS

    • Sponsor Organizations:

      Oklahoma Department of Transportation

      200 NE 21st Street
      Oklahoma City, OK  United States  73105
    • Managing Organizations:

      Oklahoma Department of Transportation

      200 NE 21st Street
      Oklahoma City, OK  United States  73105
    • Project Managers:

      Stephens, Teresa

    • Performing Organizations:

      Oklahoma State University, Stillwater

      School of Civil & Environmental Engineering
      207 Engineering South
      Stillwater, OK  United States  74078
    • Principal Investigators:

      Mishra, Debakanta

    • Start Date: 20210122
    • Expected Completion Date: 20230930
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01769714
    • Record Type: Research project
    • Source Agency: Oklahoma Department of Transportation
    • Contract Numbers: 2288, SPRY-0010(084)RS
    • Files: RIP, STATEDOT
    • Created Date: Apr 20 2021 10:11AM