Designing Recycled Hot Mix Asphalt Mixtures Using Superpave Technology

Details

• Creators:
  Kandhal, Prithvi S. ; Foo, Kee Y.
• Subject/TRT Terms:
  • Binders
  • Coarse aggregates
  • Marshall test
  • large stone aggregates
• DOI:
  https://doi.org/10.21949/1404496
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  National Center for Asphalt Technology (U.S.)
• Abstract:
  Mix design procedures for recycled asphalt pavements require the selection of ; virgin asphalt binder or recycling agent. This research project was undertaken ; to develop a procedure for selecting the performance grade (PG) of virgin ; asphalt binder based on the Superpave PG grading system. Blending charts, ; similar to the viscosity blending charts, were constructed and evaluated based ; on test parameters obtained from the dynamic shear rheometer (DSR). The ; criteria for selection was based on Superpave peformance grading (PG) ; specification, for example, G*/sin(delta)=1kPa minimum for unconditioned asphalt ; binder, G*/sin(delta)6=2.2kPa minimum for rolling thin film oven (RTFO) residue, ; G*sin(delta)=5MPa maximum for RTFO and pressure aging vessel (PAV) residue. The ; criteria based on the fatigue parameter (G*sin(delta)=5MPa maximum for RTFO+PAV ; residue) was determined to be too liberal and, therefore, was not recommended. ; An alternative criteria based on the high temperature stiffnessG*/sin(delta) ; was recommended.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/13191/dot_13191_DS1.pdf
• File Type:
  [PDF - 392.58 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b0d7c10a258d37dfb808666e2abe9dd09c30fe6f62d511f70bf09e1dc5c578379b4f734fe13e6b115c5f0409e8eddd0ca8668ca57aa7534b9c58440098082204