Investigation of Tack Coat Materials on Tracking Performance

Wisconsin Department of Transportation (WisDOT) is currently working towards specifications to modify the current process of using tack coats on projects. The concern within the past two construction seasons was not the application or dilution rate, but the ability of the in-place material to remain in place during paving operations to achieve the anticipated/adequate bond strength. This research project will evaluate the bond strength of different materials, techniques/practices, and new technologies while focusing on determining the optimum application rate and the time required to cure to prevent tracking. The research is also expected to develop recommendations for further specification changes with regard to tack maintenance and time of application in connection with this project scope. The objective of the study will be to make recommendations regarding tack coat specifications. To address the objective of the study, the following items must be addressed: determine the proper timeliness of tack coat application (keeping in mind limited paving times due to project scope and lane closure restrictions); evaluate different tack coat materials to determine what product should be used based on weather conditions/construction type/construction staging/etc; assess different techniques, innovations, technologies, etc. to operate more effectively and efficiently than the current standard practice; develop recommendations for WisDOT Standard Specifications, Construction Materials Manual, Facilities Development Manual, etc. regarding tack coat usage and best practices.


  • English


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Wisconsin Department of Transportation

    4802 Sheboygan Avenue
    Madison, WI  United States  53707
  • Project Managers:

    Hefel, Steven

  • Performing Organizations:

    University of Wisconsin-Madison

    1415 Engineering Drive
    2205 EH Madison
    Madison, WI  United States  53706
  • Principal Investigators:

    Bahia, Hussain

  • Start Date: 20170608
  • Expected Completion Date: 20181208
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01640964
  • Record Type: Research project
  • Source Agency: Wisconsin Department of Transportation
  • Contract Numbers: 0092-17-06
  • Files: RiP, STATEDOT
  • Created Date: Jan 10 2017 12:05PM