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.

Language

• English

Project

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

  RE-0746-01

  C2122

• 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

• TRT Terms: Accelerated tests; Asphalt concrete pavements; Full-depth reclamation; Mix design; Overlays (Pavements)
• Subject Areas: Design; Highways; Materials; Pavements;

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