Develop Next Generation of Hamburg Rutting Test for Asphalt Mixes

The Hamburg Wheel Track (HWT) rutting test generally serves well as the standard rutting test for asphalt mixes in Texas; however, in the last several years, some premium mixes (i.e. stone matrix asphalt), designed with PG76-22 and low HWT rut depth, have experienced premature rutting failures under slow moving (or stop/go) traffic in several Texas Department of Transportation (TxDOT) Districts. Such failures burden TxDOT with extra cost. Furthermore, it was reported that the HWT test cannot accurately quantify the better rutting performance of some tougher mixes with highly modified asphalt (HiMA). Thus, the research team will develop the next generation of HWT test to accurately screen out asphalt mixes that are prone to rutting failures. The research team will review the literature, survey Districts, and other state departments of transportation (DOTs) to identify the proper rutting test(s) and asphalt mixes for addressing the rutting failure caused by the slow-moving traffic. The research team will further develop the next generation of HWT test and associated acceptance criteria through finite element analysis, laboratory testing, field accelerated pavement testing and survey of in-service pavement intersections, round robin test, and recommendation of specification changes.

• Record URL:
  https://library.ctr.utexas.edu/Presto/project=0-7186

Language

• English

Project

• Status: Active
• Funding: $634305
• Contract Numbers:

  0-7186

• 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:

  Schwerdt, Tom

• Performing Organizations:

  Texas A&M Transportation Institute

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

  Center for Transportation Research

  3925 W. Braker Lane
  Austin, TX  United States  78759
• Principal Investigators:

  Zhou, Fujie

• Start Date: 20230901
• Expected Completion Date: 20260831
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Asphalt tests; Failure analysis; Ruts (Pavements); Rutting; State departments of transportation; Test procedures
• Identifier Terms: Hamburg Wheel Rut Tester
• Geographic Terms: Texas
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01894819
• Record Type: Research project
• Source Agency: Texas Department of Transportation
• Contract Numbers: 0-7186
• Files: RIP, STATEDOT
• Created Date: Sep 27 2023 3:26PM