Evaluation of Thin Asphalt Overlay Practice Preserving Nebraska's Asphalt Pavements

The proposed research will evaluate the current thin asphalt overlay practices implemented in Nebraska. To that end, the two mixtures (i.e., SLX and SPH) will be compared by conducting laboratory tests that measure their mechanical properties and performance characteristics. The laboratory test results will also be used in a finite element program for predicting pavement performance behavior. This will provide insights into how the thin asphalt overlay with SLX behaves compared to the previous practice, which replaced the old 2-inch asphalt with a new mixture of SPH. In addition, the model simulation results of the thin lift overlays will be compared to actual field performance observations monitored over time.


    • English


    • Status: Completed
    • Contract Numbers:

      SPR-P1(14) M015

    • Sponsor Organizations:

      Federal Highway Administration

      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590

      Nebraska Department of Roads

      1500 Highway 2
      Lincoln, NE  United States  68502
    • Performing Organizations:

      University of Nebraska, Lincoln

      Lincoln, NE  United States 
    • Principal Investigators:

      Kim, Yong-Rak

    • Start Date: 20140101
    • Expected Completion Date: 0
    • Actual Completion Date: 20150630
    • Source Data: RiP Project 35928

    Subject/Index Terms

    Filing Info

    • Accession Number: 01572295
    • Record Type: Research project
    • Source Agency: Nebraska Department of Roads
    • Contract Numbers: SPR-P1(14) M015
    • Files: RiP, STATEDOT
    • Created Date: Aug 5 2015 1:00AM