Use of a Double Chip Seal to Correct a Flushing Hot Mix Asphalt Pavement in Washington State - Final Report

A double chip seal was applied to an existing hot mix asphalt (HMA) pavement to mitigate severe flushing that existed throughout the project. Special care was taken to adjust the amount of binder used to account for the degree of flushing in the existing pavement. The double chip seal was effective for approximately two years before flushing began to appear through the seal. After five years the flushing extended throughout the project in the wheel paths of both lanes. The origin of the flushing in the double seal was judged to be from the underlying HMA and not the double seal. For this particular HMA pavement a double chip seal was not the long term solution. The double seal and underlying HMA pavement will be removed by grinding and replaced with a new HMA pavement.

• Record URL:
  https://www.wsdot.wa.gov/research/reports/fullreports/760.2.pdf
• 
• Corporate Authors:

  Washington State Department of Transportation

  Olympia, WA  United States  98504-5201

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Anderson, Keith
  • Littleton, Kevin
  • Weston, Jim
  • Uhlmeyer, Jeff S
  • Johnson, Brett
  • Dunham, Scott
  • Van De Bogert, Stephen A
• Publication Date: 2016-9

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report Experimental Feature 10-01
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 56p

Subject/Index Terms

• TRT Terms: Bituminous binders; Bleeding (Pavements); Chip seals; Hot mix asphalt; Pavement maintenance
• Geographic Terms: Washington (State)
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01614875
• Record Type: Publication
• Report/Paper Numbers: WA-RD 760.2
• Contract Numbers: Contract 7915
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Oct 25 2016 10:05AM