Designing Recycled Hot Mix Asphalt Mixtures Using Superpave Technology

Details

• Creators:
  Kandhal, Prithvi S. ; Foo, Kee Y.
• Subject/TRT Terms:
  Binders Coarse Aggregates Large Stone Aggregates Marshall Test
• DOI:
  https://doi.org/10.21949/1404496
• Resource Type:
  Tech Report
• TRIS Online Accession Number:
  00737828
• Corporate Publisher:
  National Center for Asphalt Technology (U.S.)
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Design ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
• 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 stiffness[G*/sin(delta)]
  
  was recommended.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c88fa41c5e99a23d55147fecbf0fc42b73df482fa5917ef8fe0da9a755486418
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/13191/dot_13191_DS1.pdf
• File Type:
  [PDF - 392.58 KB ]