Evaluation of new binders using newly developed fracture energy test.

Details

• Creators:
  Roque, Reynaldo ; Yan, Yu ; Cocconcelli, Cristian ; Lopp, George
• Corporate Creators:
  University of Florida. Dept. of Civil and Coastal Engineering
• Subject/TRT Terms:
  Additives Asphalt Pavements Bituminous Binders Deformation Curve Energy Fracture Tests
• Publication/ Report Number:
  BDK75 977-75
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Design
• Abstract:
  This study evaluated a total of seven asphalt binders with various additives
  
  using the newly developed binder fracture energy test. The researchers prepared and
  
  tested PAV-aged and RTFO-plus-PAV-aged specimens. This study confirmed previous
  
  research findings that fracture energy is unaffected by loading rates. This research
  
  outlines the characteristics of true stress-true strain curves for asphalt binders with
  
  various additives. The results indicate that SBS polymer-modified asphalt binder
  
  exhibits a true stress-true strain curve with a distinct second stress peak at all loading
  
  rates, and has high fracture energy. Four binders exhibited comparable fracture energy
  
  with and without RTFO testing, while the fracture energy of other three increased
  
  significantly after RTFO testing. Limited information is available regarding the
  
  additives in the tested binders and their relative contents; however, the BFE test appears
  
  to clearly identify the presence of SBS polymer modifier and rank the cracking
  
  resistance of tested binders in terms of fracture energy. The BFE test successfully
  
  identified three binders which failed to meet the Superpave PG 76-22 grading
  
  requirements and clearly distinguished between the remaining four qualified binders.
  
  
• Format:
  PDF
• Funding:
  UF Project No.: 00106022
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:d0150d6d6fc16bdf8366115e0125977d70f03ce00b7a065d103de66cf08d1d04
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26267/dot_26267_DS1.pdf
• File Type:
  [PDF - 2.90 MB ]