Expansive Characteristics of Reclaimed Asphalt

Seventeen RAP materials and virgin aggregates were tested for their expansive characteristics in the laboratory following the ASTM D4792 "Potential Expansion of Aggregates from Hydration Reactions" test method. The specimens in California Bearing Ratio (CBR) test molds were submerged into a high alkali cement water solution (pH of 12) and kept always soaked at 70oC to accelerate hydration reactions. The percent expansion amounts of the CBR specimens and the temperature and pH levels of the solution were measured continuously on a daily basis during the soaking period for a minimum of 7 days and maximum 60 days until the expansion curve flattened or the expansion rate slowed down.

    Language

    • English

    Project

    • Status: Completed
    • Contract Numbers:

      R27-27

    • Sponsor Organizations:

      Illinois Department of Transportation

      Bureau of Materials and Physical Research
      126 East Ash Street
      Springfield, IL  United States  62704-4766
    • Performing Organizations:

      University of Illinois, Urbana-Champaign

      1105 Newmark Civil Engineering Lab, 205 North Matthews Avenue
      Urbana, IL  United States  61801
    • Principal Investigators:

      Popovics, John

      Tutumluer, Erol

    • Start Date: 20070201
    • Expected Completion Date: 0
    • Actual Completion Date: 20090430
    • Source Data: RiP Project 17006

    Subject/Index Terms

    Filing Info

    • Accession Number: 01462648
    • Record Type: Research project
    • Source Agency: Illinois Department of Transportation
    • Contract Numbers: R27-27
    • Files: RiP, STATEDOT
    • Created Date: Jan 3 2013 2:07PM