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

Details

• Creators:
  Schroer, Joe
• Corporate Creators:
  Missouri. Dept. of Transportation. Division of Construction and Materials
• Subject/TRT Terms:
  Asphalt Mixtures Binders Blending Cold Weather Pavement Performance Recycled Materials Rheology
• 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
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:57a5f5e97de37fd6319d384e04eea4cb0b9855e1f5b5293a8511eb77803ffcd1
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26692/dot_26692_DS1.pdf
• File Type:
  [PDF - 1.04 MB ]