Optimum AC Overlay Thickness over FDR of Existing AC Pavements (CISL Experiment No. 20)

The objectives of this experiment were (i) To find out the optimum cement and fly ash content for full depth reclamation (FDR) of existing asphalt concrete (AC) pavements; (ii) to mechanistically design AC overlays of a stabilized FDR base found in (i); and (iii) construct and evaluate thin AC overlays on FDR base to find optimum thickness. The study will consist of two phases–(i) Laboratory Experimentation to find the optimum mixture designs for the stabilized bases to be used in the CISL #20 experiment, and (ii) Full-Scale Accelerated Pavement Testing (APT) of four test lanes with varying stabilized layer strength and AC overlay thickness. The sections will be loaded under 500,000 repetitions of 80-kN (18-kip) single axle repetitions or to 12.5 mm (½ inch) rut depth whichever comes first. Various instrumentation and performance monitoring will also be done.

  • Supplemental Notes:
    • Final report is pending review.


  • English


  • Status: Active
  • Funding: $249832
  • Contract Numbers:



  • Sponsor Organizations:

    Kansas Department of Transportation

    Eisenhower State Office Building
    700 SW Harrison Street
    Topeka, KS  United States  66603-3754
  • Performing Organizations:

    Kansas State University Transportation Center

    Kansas State University
    Department of Civil Engineering
    Manhattan, KS  United States  66506
  • Principal Investigators:

    Hossain, Mustaque

  • Start Date: 20180101
  • Expected Completion Date: 20240731
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01856790
  • Record Type: Research project
  • Source Agency: Kansas Department of Transportation
  • Contract Numbers: RE-0746-01, C2122
  • Files: RIP, STATEDOT
  • Created Date: Aug 30 2022 3:41PM