Evaluation of Alternatives to Calcined Bauxite for HFST

Maintaining the appropriate amount of pavement friction is critical for safe driving. High friction surface treatment (HFST) can enhance the ability of a road surface to provide pavement friction to vehicles in critical braking or cornering maneuvers. Missouri Department of Transportation (MoDOT) has used HFST since 2013 to restore pavement surface friction where traffic has worn down pavement surface aggregates and also to improve wet crash locations. Although several aggregates have been evaluated, only calcined bauxite aggregate has met the threshold for performance necessary to be called a HFST. Currently, calcined bauxite is the primary aggregate used for HFST in Missouri. Calcined bauxite has very limited sources, which makes it more expensive than locally available aggregates. The objective of this study is to identify and compare alternatives to calcined bauxite through testing and laboratory evaluation.

    Language

    • English

    Project

    • Status: Active
    • Funding: $99984
    • Contract Numbers:

      TR202005

    • Sponsor Organizations:

      Missouri Department of Transportation

      1617 Missouri Boulevard
      P.O. Box 270
      Jefferson City, MO  United States  65102
    • Project Managers:

      Schulte, Brent

    • Performing Organizations:

      Missouri University of Science & Technology, Rolla

      Department of Engineering
      202 University Center
      Rolla, MO    65409
    • Principal Investigators:

      Abdelrahman, Magdy

      Myers, John

    • Start Date: 20191122
    • Expected Completion Date: 20210402
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01733972
    • Record Type: Research project
    • Source Agency: Missouri Department of Transportation
    • Contract Numbers: TR202005
    • Files: RiP, STATEDOT
    • Created Date: Mar 20 2020 10:20AM