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Asphalt mixture cold temperature performance using the Bending Beam Rheometer (BBR).

File Language:
English


Details

  • Creators:
    Schroer, Joe
  • Corporate Creators:
    Missouri. Dept. of Transportation. Division of Construction and Materials
  • Subject/TRT Terms:
  • Publication/ Report Number:
    cmr 13-012
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Missouri
  • Corporate Publisher:
    Missouri. Dept. of Transportation. Division of Construction and Materials
  • Abstract:
    The use of recycled materials providing substitution of virgin binder in asphalt mixtures ; continues to increase. The current level of funding for highway construction is ; significantly less than 3 years ago and the level of competition between bidders is fierce. ; With the increased substitution of virgin binders, concern for cold weather performance ; of the mixtures has also increased. The binder in reclaimed asphalt pavement (RAP) is ; usually somewhat stiffer and the binder in reclaimed asphalt shingles (RAS) is ; remarkably stiffer than the virgin roadway binders. Extraction and recovery of the ; binders to determine the binder characteristics results in 100% blending of the binders, ; however, the actual amount of blending between the recycled and virgin binders in the ; mixtures is unknown. While estimates of the blended binder can be conjectured, it is ; believed that performance testing of the mixture is the best way to predict how the ; mixture will perform on the roadway. Cold temperature performance of the mixtures is ; not typically an evaluation made by MoDOT due to the complexity and cost for test ; equipment, preparation of test specimens and evaluation of the test results. However, one ; test was found that could be completed using the bending beam rheometer (BBR) ; currently in MoDOT’s Central Laboratory.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/26692/dot_26692_DS1.pdf
  • File Type:
    Filetype[PDF - 1.04 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:57a5f5e97de37fd6319d384e04eea4cb0b9855e1f5b5293a8511eb77803ffcd1
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