Laboratory evaluation of asphalt concrete mixtures containing high contents of reclaimed asphalt pavement (RAP) and binder.

Details

• Creators:
  Boriack, Paul C. ; Katicha, Samer W. ; Flintsch, Gerardo W. ; Tomlinson, Christopher R.
• Corporate Creators:
  Virginia Polytechnic Institute and State University. Transportation Institute
• Corporate Contributors:
  United States. Federal Highway Administration ; Virginia. Dept. of Transportation
• Subject/TRT Terms:
  • Reclaimed asphalt pavements
  • Asphalt concrete
  • Binders
  • Laboratory tests
  • Fatigue (Mechanics)
  • Rutting
  • Mix design
  • Volumetric analysis
• Publication/ Report Number:
  FHWA/VCTIR 15-R8
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Virginia Center for Transportation Innovation and Research
• Abstract:
  This study investigated the effect of added asphalt ; binder content on the performance and volumetric p ; roperties of ; asphalt concrete mixtures containing reclaimed asph ; alt pavement (RAP) in the amounts of 0%, 20%, and 4 ; 0%. A laboratory- ; produced mixture containing 100% RAP was also evalu ; ated. Performance of the mixtures was evaluated ba ; sed on three criteria: ; stiffness (dynamic modulus), fatigue resistance, an ; d rutting resistance (flow number and asphalt pavem ; ent analyzer). ; Results showed that a 0.5% increase in binder conte ; nt improved both the fatigue and rutting resistance ; of the 0% and ; 20% RAP mixtures with only slight (insignificant) d ; ecreases in dynamic modulus. However, the addition ; of various amounts of ; binder to the 40% RAP mixture led to a significant ; decrease in rutting resistance with little or no im ; provement to fatigue ; resistance. Volumetric analysis was performed on al ; l of the mixtures, and detailed results are present ; ed. ; Based on the results of the study, the authors reco ; mmend that the Virginia Department of Transportatio ; n supplement ; current asphalt mixture design procedures that are ; based on mixture volumetric properties with laborat ; ory-mixture performance ; testing.
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• Format:
  PDF
• Funding:
  101884
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28316/dot_28316_DS1.pdf
• File Type:
  [PDF - 995.26 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ec73939f54a3fc5f5a66b6ea6cbc71787fa7f2097522ca341fe025bbb2716b49