Development of an Acceptance Test for Chip Seal Projects

Chip seals are among the most popular preventive maintenance techniques implemented by many departments of transportation (DOTs), county road departments and cities. The deteriorated pavement surface is sprayed with an asphalt emulsion or binder, and then a layer of uniformly-graded aggregates is spread and compacted. Curing is required before opening the road to traffic to enhance bonding between aggregate particles and asphalt bitumen. Percent embedment of aggregate particles into the thin bituminous layer is one of the most significant parameters affecting the performance of asphalt chip seals. Bleeding or aggregate loss may be encountered in chip seal applications depending on the aggregate percent embedment. The main objective of this research project was to develop a standard test procedure to directly calculate the aggregate percent embedment into the asphalt binder in a chip seal project via digital image analysis. Three image analysis algorithms were developed and used to analyze chip seal samples. Forty-eight (48) chip seal cores were collected from eight different locations in Michigan and analyzed. Moreover, forty (40) laboratory samples were fabricated to investigate the impact of the binder and aggregate application rates on the percent embedment. The analyses were performed using the sand patch test, laser texture scanning and the image-based algorithms developed as part of this project. Performance of chip seal samples were also evaluated using sweep tests performed on the laboratory and field samples. Software, named CIPS, has been developed and it represents one of the primary outputs of this project. This software and the procedure developed herein can be used by road agencies and contractors as an acceptance test for chip seal projects.

  • Record URL:
  • Supplemental Notes:
    • Cover date: January 30, 2017.
  • Corporate Authors:

    Michigan State University, East Lansing

    East Lansing, MI  United States  48824

    Michigan Department of Transportation

    Research Administration, 8885 Ricks Road, P.O. Box 30049
    Lansing, MI  United States  48909

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Kutay, M Emin
    • Ozdemir, Ugurcan
    • Hibner, Derek
    • Kumbargeri, Yogesh
    • Lanotte, Michele
  • Publication Date: 2016-11-21


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 95p

Subject/Index Terms

Filing Info

  • Accession Number: 01633253
  • Record Type: Publication
  • Report/Paper Numbers: SPR-1649, OR15 – 508
  • Contract Numbers: Contract 2013-0066 Z3
  • Created Date: Mar 17 2017 12:37PM