A STUDY OF RE-USE OF MOISTURE-DAMAGED ASPHALT MIXTURES. FINAL REPORT

The state of South Carolina currently utilizes 15% reclaimed asphalt pavement (RAP) in its recycled mixtures. It is not known whether the material properties of stripped asphalt pavement would facilitate higher RAP percentages and reduce further stripping. In this research project, procedures were established for determining whether an asphaltic concrete mixture has been moisture-damaged and, if so, to what extent. In addition, the feasibility of increasing the amount of RAP in moisture-damaged recycled mixtures used for a binder course, and the effects of various aggregate and asphalt cement sources used in mixtures containing recycled moisture-damaged materials were evaluated. The results of this research project indicate that recycled mixes containing 15%-20% RAP do not exhibit more moisture susceptibility than similar virgin mixes containing no RAP. This was found to be true even when the RAP was from a pavement which had been shown to have already suffered moisture damage. In general, the results indicate that recycling of moisture damaged pavements does not create increased risk of moisture damage in the recycled pavement. This finding is based on the use of a relatively small percentage of RAP in only binder mixes.

  • Corporate Authors:

    Clemson University

    Department of Civil Engineering
    Clemson, SC  United States  29634

    South Carolina Department of Highways and Public Transportation

    955 Park Street, P.O. Box 191
    Columbia, SC  United States  29202

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Amirkhanian, S N
    • Burati Jr, J L
  • Publication Date: 1992-9

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 234 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00625252
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-SC-92-05
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Oct 30 1996 12:00AM