Is Seal Coating Counterproductive or Not?

A hypothesis proposed that premature stripping of asphalt pavement under chip seals is caused by the high air void pavement, which allows water to intrude and spread, and the low surface breathability, which traps water in the asphalt pavement. This research will investigate this problem through literature review, field data collection, and lab testing. The lab tests include permeability and surface breathability tests, effect of air voids on moisture susceptibility, and effect of seal coating on moisture susceptibility. The objectives of this research are to 1) find out the causes of premature stripping of street asphalt pavement under seal coats; 2) investigate possible solutions to address pavement stripping under seal coats; 3) provide recommendations for the preservative strategies of street pavements in Minnesota.

• Record URL:
  http://dotapp7.dot.state.mn.us/projectPages/pages/projectDetails.jsf?id=19638&type=CONTRACT
• Supplemental Notes:
  • INV 1028

Language

• English

Project

• Status: Completed
• Funding: $14,923
• Contract Numbers:

  1029687

• Sponsor Organizations:

  Local Road Research Board

  395 John Ireland Boulevard
  St. Paul, Minnesota  United States  55155-1899
• Managing Organizations:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Project Managers:

  Holdhusen, Bruce

• Performing Organizations:

  American Engineering Testing

  St. Paul, Minnesota  United States 
• Principal Investigators:

  Arman, Brian

• Start Date: 20171102
• Expected Completion Date: 20190228
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Air voids; Asphalt pavements; Permeability; Seal coating; Seal coats; Stripping (Pavements)
• Subject Areas: Materials; Pavements;

Filing Info

• Accession Number: 01651411
• Record Type: Research project
• Source Agency: Minnesota Department of Transportation
• Contract Numbers: 1029687
• Files: RiP, STATEDOT
• Created Date: Nov 22 2017 12:52PM