Implementation of Improved Overlay Testers for Fatigue Cracking Resistance of Asphalt Mixture

The goal of this implementation project are 1) to assess the effectiveness of an alternative data analysis methodology that the Performing Agency proposed for OT that considers two parameters to quantify the AC mixes, critical fracture energy and crack progression rate and 2) to establish specifications and guidelines to design AC mixes with reproducible cracking potential that can be successfully utilized by the District personnel of the The Texas Department of Transportation (TxDOT), also referred to as the Receiving Agency. In this project, the Performing Agency shall address the following technical objectives: 1. Provide assistance and training to Receiving Agency personnel for the proper use of the proposed OT test methodology and corresponding specifications in the laboratory setting. 2. Improve specifications for the proper use of AC mixes in flexible pavements based on their cracking properties. 3. Demonstrate the potential of the alternative data analysis methodology proposed under Project 0-6815 “Improved Overlay Tester for Fatigue Cracking Resistance of Asphalt Mixtures” that concluded in June 30, 2016 for balanced mix design along with the Hamburg wheel tracking (HWT) test results. 4. Assess the impact that different mix-design parameters such as aggregate type, aggregate gradation, asphalt binder content and performance grade (PG), recycle material content, and additives may have on the performance indices, critical fracture energy and crack progression rate, proposed in Project 0-6815 “Improved Overlay Tester for Fatigue Cracking Resistance of Asphalt Mixtures, which concluded in June 30, 2016. 5. Gather field performance data to correlate the lab and field cracking life of AC mixtures and establish limits of acceptable cracking properties using the OT performance indices proposed in Project 0- 6815. 6. Generate guidelines to improve the cracking resistance of under-performing AC mixes based on the influence of AC mix-design parameters.


  • English


  • Status: Completed
  • Funding: $591500
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

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

    Pete, Kevin

  • Performing Organizations:

    The University of Texas at El Paso

    500 W University Ave
    El Paso, TX  United States  79902
  • Principal Investigators:

    Abdallah, Imad

  • Start Date: 20170523
  • Expected Completion Date: 20200831
  • Actual Completion Date: 20200831

Subject/Index Terms

Filing Info

  • Accession Number: 01648541
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 5-6815-01
  • Files: RIP, STATEDOT
  • Created Date: Oct 18 2017 10:49AM