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Crumb rubber modified asphalt concrete in Oregon : final report.

File Language:
English


Details

  • Creators:
    Hunt, Elizabeth
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-OR-RD-02-13
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Oregon
  • Corporate Publisher:
    Oregon. Dept. of Transportation. Research Unit
  • Abstract:
    Since 1993, the Oregon Department of Transportation (ODOT) has been monitoring performance of seventeen rubber modified

    asphalt and asphalt concrete sections constructed on Oregon highways. The study originated in response to the Intermodal Surface

    Transportation Efficiency Act (ISTEA, 1991) which mandated the use of tire rubber in pavements. The ISTEA requirement was

    eventually repealed, however, the study continued to document pavement performance in an effort to determine if rubber modified

    asphalt concrete pavements are feasible in terms of construction and life cycle cost.

    The rubber modified sections that performed the worst included those constructed using the dry process (rubber modified asphalt

    concrete—RUMAC). The sections performing the best included open graded mixes constructed using the binder PBA-6GR (a rubber

    modified asphalt). After five years, the PBA-6GR pavements were performing as well or better than the control sections. The cost of

    the mixes constructed in 1993 and 1994 with PBA-6GR was about 12% more than the control sections. Over the life of the pavement,

    the terminal blend asphalt rubber (PBA-6GR) may be cost effective.

    This report documents the performance of the rubber modified and control sections including distress information, skid and ride data

    and laboratory testing results. In addition, non-ODOT projects were reviewed and discussed.

  • Format:
    PDF
  • Funding:
    SPR 355
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:abfd78a58d963dbdc445c4a8412ec373714a638b23b8d60f6b60e2b2115c1633
  • Download URL:
  • File Type:
    Filetype[PDF - 373.87 KB ]
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