Impact of Polymer Modification on IDEAL-CT and I-FIT for Balanced Mix Design

The overall objective of this study is to determine the impact of polymer modification on the IDEAL-CT (Indirect Tensile Asphalt Cracking Test) and I-FIT (Illinois Flexibility Index Test) results for balanced mix design. Specifically, the study seeks to evaluate two hypotheses for the unexpected IDEAL-CT and I-FIT results indicating better intermediate-temperature cracking resistance for unmodified mixtures than polymer modified asphalt mixtures. The first hypothesis is related to lack of optimization of asphalt binder content in the mixtures tested, while the second hypothesis is related to the limitation that the current IDEAL-CT and I-FIT procedures cannot appropriately demonstrate the benefits of polymer modification.


  • English


  • Status: Completed
  • Funding: $100000
  • Contract Numbers:

    1036333 WO#2

  • Sponsor Organizations:

    National Road Research Alliance

    St. Paul, MN  United States  55155
  • Managing Organizations:

    Minnesota Department of Transportation

    395 John Ireland Boulevard
    St Paul, MN  United States  55155
  • Performing Organizations:

    Auburn University

    Auburn, AL  United States  36830
  • Principal Investigators:

    Yin, Fan

  • Start Date: 20210122
  • Expected Completion Date: 20221130
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01762698
  • Record Type: Research project
  • Source Agency: Minnesota Department of Transportation
  • Contract Numbers: 1036333 WO#2
  • Files: RIP, STATEDOT
  • Created Date: Jan 26 2021 11:42AM