RES2016-14: Maintenance Strategies for Open-graded Friction Course (OGFC)

This report investigated the maintenance strategies for open-graded friction course (OGFC) in Tennessee. Three OGFC patching materials and the fog seal application were selected and laboratory tests were conducted to investigate their effectiveness and performance. In addition, the effectiveness of different maintenance treatments was investigated using the data derived from TDOT, other DOTs, and LTPP database. For the patching material, TDOT cold patching material was selected by considering the mechanical performance, permeability, adhesiveness, cohesion and economic efficiency. Although adding cement could slightly decrease the permeability, 3% cement content was suggested to add into the TDOT cold patching material to improve the indirect shear strength and moisture damage resistance. The application of fog seal decreased the permeability and the texture depth of OGFC. However, it could also significantly reduce the abrasion loss, indicating that the durability of OGFC pavement could be increased by this application. The reduced texture depth due to the fog seal treatment may be restored to certain extent by moving vehicles after opening to traffic. Based on the analyses on the LTPP data and the DOT survey response, recommendations on OGFC maintenance strategies were proposed to correct different distresses.

• Record URL:
  https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/final-reports/RES2016-14%20OGFC-FR-Revision%20-%20Approved.pdf

Language

• English

Project

• Status: Completed
• Funding: $144554
• Contract Numbers:

  RES2016-14

• Sponsor Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Managing Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Performing Organizations:

  University of Tennessee, Knoxville

  Center for Transportation Research
  Conference Center Building
  Knoxville, TN  United States  37996-4133
• Principal Investigators:

  Huang, Baoshan

• Start Date: 20151116
• Expected Completion Date: 20190605
• Actual Completion Date: 20190605
• USDOT Program: Transportation, Planning, Research, and Development

Subject/Index Terms

• TRT Terms: Friction course; Laboratory tests; Patching; Pavement maintenance; Recommendations; Seal coats
• Geographic Terms: Tennessee
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01763321
• Record Type: Research project
• Source Agency: Tennessee Department of Transportation
• Contract Numbers: RES2016-14
• Files: RIP, STATEDOT
• Created Date: Feb 3 2021 2:56PM