Quantify Maximum Accumulated Seal Coat Layers for Stability

TxDOT invests over $250 million annually on seal coats, it is therefore critical to apply the right treatment to the right road at the right time. Projects are typically selected based on the time since the last seal coat (an average of 7 years) with little to no testing performed to ensure that the section is a good candidate for seal coat and how many seal coats to apply. The objective of this research is to determine the maximum number of seal coats that can be applied to a pavement surface before the accumulated layers of seal coats become unstable. The research teams will evaluate the stability of existing accumulated seal coat substrate layers through a series of laboratory and field testing and develop tests and procedures to determine when an additional seal coat may not perform well. The research teams will develop guidelines to select candidate seal coat projects with multiple seal coat layers ensuring that a new seal coat is used on a good candidate pavement will lower risk to TxDOT, improve life cycle costs and lead to better performing sections of pavement.

Language

  • English

Project

  • Status: Active
  • Funding: $449,211
  • Contract Numbers:

    0-7106

  • 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:

    Adediwura, Jade

  • Performing Organizations:

    Texas A&M Transportation Institute

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

    The University of Texas at Tyler

    3900 University Blvd
    Tyler, TX  United States  75799
  • Principal Investigators:

    Goehl, Darlene

  • Start Date: 20210901
  • Expected Completion Date: 20241130
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01782649
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-7106
  • Files: RIP, STATEDOT
  • Created Date: Sep 22 2021 5:40PM