Measuring Seal Coat Rate Field Adjustments

The objective of this research project is to develop measurable and repeatable adjustment criteria for seal coat application rates based on pavement condition, traffic and material properties for the design method developed in research project 0-6989 Update Seal Coat Application Rate Design Method (TxDM6989). Current practice requires experienced personnel to understand the adjustments needed for application rates, including changing the adjustments as conditions on the pavement change. The adjustments in the TxDM6989 combine multiple pavement conditions into one description. By measuring the conditions, a combined adjustment based upon measured parameters will remove subjectivity from the procedure. This will lead to more consistently constructed projects that meet the objectives of designing the rates so that the resulting seal will not have too much binder so that it flushes or bleeds in the summer; but there is enough binder to prevent rock loss over the winter. This research project will produce measurable methods for adjustments to the rate design procedures that will help engineers and inspectors make better decisions resulting in successful projects.

• Record URL:
  • https://library.ctr.utexas.edu/Presto/project=0-7105

Language

• English

Project

• Status: Completed
• Funding: $450000
• Contract Numbers:

  0-7105

• 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:

  Schwerdt, Tom

• Performing Organizations:

  Texas A&M Transportation Institute, College Station

  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: 20241130

Subject/Index Terms

• TRT Terms: Pavement maintenance; Seal coating; Seal coats; Specifications
• Geographic Terms: Texas
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01782621
• Record Type: Research project
• Source Agency: Texas Department of Transportation
• Contract Numbers: 0-7105
• Files: RIP, STATEDOT
• Created Date: Sep 22 2021 4:46PM