Developing a laboratory protocol for asphalt binder recovery.

Details

• Creators:
  Diefenderfer, Stacey D.
• Corporate Creators:
  Virginia Center for Transportation Innovation and Research
• Corporate Contributors:
  Virginia. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bituminous binders
  • Evaporators
  • Alternatives analysis
  • Test procedures
  • Laboratory tests
• Publication/ Report Number:
  FHWA/VCTIR 15-R7
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Corporate Publisher:
  Virginia Center for Transportation Innovation and Research
• Abstract:
  Asphalt binder extraction and recovery are common laboratory procedures used to provide material for research and quality ; assurance testing. The most common methods of recovery performed today include the Abson method and the rotary evaporator ; (or Rotavap) method. The purpose of this study was to compare the Rotavap method proposed for use at the asphalt binder ; laboratory of the Virginia Center for Transportation Innovation and Research to the Abson method currently in use at the asphalt ; materials laboratory of the Virginia Department of Transportation Materials Division to provide for continuity in test results. ; Blank determinations were produced, recovered, and tested to provide comparative data for the two methods of recovery. ; In addition, base binders used in the production of the blank determinations were tested under the same conditioning protocols as ; those for the recovered binder to provide baseline data. Analysis of the test data indicated that using both the Rotavap and Abson ; methods affected the resultant binder properties; however, the impacts were similar for both methods. There were few significant ; differences between the test results using the two methods, and neither method was found to result in any change in the resultant ; binder grade of a recovered binder as compared to that of the base binder. ; Based on these findings, it was concluded that the Rotavap method provides recovered binders that are comparable to those ; recovered using the Abson method. It was recommended that VCTIR continue to use the Rotavap method to recover binders and ; proceed with efforts to become accredited by the AASHTO Materials Reference Laboratory in the use of Rotavap recovery.
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• Format:
  PDF
• Funding:
  101802
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28142/dot_28142_DS1.pdf
• File Type:
  [PDF - 768.20 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:dfae4a15adde79b125c991e4eb6bfe3a08de6d3e0b4333299d2625ec9989b010