Determination of Creep Compliance and Indirect Tensile Strength for Mechanistic-Empirical Pavement Design Guide

Pavement condition greatly affects the safety of driver. For instance, the rutting in wheelpath creates hydroplaning which can leads to loss of control of vehicles. The roughness, e.g. potholes, can pose safety hazards to the driver. Therefore, improving the pavement condition by designing cost-effective long-lasting pavement is of paramount importance. The adoption of Mechanistic-Empirical Pavement Design Guide (MEPDG) align well with this goal, when compared to traditional empirical pavement design. Dynamic modulus, indirect tensile (IDT) creep compliance and strength are the three primary mechanistic properties of asphalt mix for the asphalt pavement in the MEPDG. Thermal cracking is one of dominant distresses in Northern States in the U.S. Based the NCHRP 01-40, the thermal cracking prediction by the Pavement ME is very sensitive (highest category) to the IDT creep compliance and IDT strength. The MEPDG is a significant improvement over empirical design method and the models in MEPDG were developed based on national database of material properties and are not applicable to local materials. Therefore, there needs a local calibration of models and establishment of catalog of typical material properties, including IDT creep compliance and strength at low temperature, for local material. Without catalog of material properties in a state, the calibration of models would not be valid. The objective of this proposed research is to develop catalogs of IDT creep compliance and IDT strength for thermal cracking for materials in Idaho.


    • English


    • Status: Active
    • Funding: $60000.00
    • Contract Numbers:


    • Sponsor Organizations:

      Research and Innovative Technology Administration

      University Transportation Centers Program
      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590
    • Project Managers:

      Wen, Haifang

    • Performing Organizations:

      Washington State University, Pullman

      Civil & Environmental Engineering Department
      PO Box 642910
      Pullman, WA  United States  99164-2910
    • Principal Investigators:

      Wen, Haifang

    • Start Date: 20150116
    • Expected Completion Date: 0
    • Actual Completion Date: 20160615
    • Source Data: RiP Project 39240

    Subject/Index Terms

    Filing Info

    • Accession Number: 01556947
    • Record Type: Research project
    • Source Agency: Pacific Northwest Transportation Consortium
    • Contract Numbers: DTRT13-G-UTC40
    • Files: UTC, RiP
    • Created Date: Mar 14 2015 1:00AM