Creep compliance and percent recovery of Oklahoma certified binder using the multiple stress recovery (MSCR) method.

Details

• Creators:
  Hossain, Zahid ; Zaman, Musharraf ; Ghosh, Debaroti
• Corporate Creators:
  University of Oklahoma. School of Civil Engineering and Environmental Science
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Laboratory tests
  • Creep tests
  • Binders
  • Reclaimed asphalt pavements
  • Acceptance tests
  • Asphalt mixtures
  • Polymers
• Publication/ Report Number:
  FHWA-OK- 14-19
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oklahoma
• Corporate Publisher:
  Oklahoma. Dept. of Transportation. Materials and Research Division
• Abstract:
  A laboratory study was conducted to develop guidelines for the Multiple Stress Creep Recovery ; (MSCR) test method for local conditions prevailing in Oklahoma. The study consisted of ; commonly used binders in Oklahoma, namely PG 64-22, PG 70-28, and PG 76-28. The testing ; program also included binders recovered from four reclaimed asphalt pavement (RAP) samples ; and Sasobit® ; -modified virgin binders. Non-Recoverable Creep Compliance (Jnr) and MSCR ; %Recovery, obtained from the MSCR test data, were analyzed for the MSCR grading. In ; addition, the Asphalt Institute (AI) recommended Polymer and Quadrant methods were followed ; in interpreting the test data. Analyses of test results showed that the AASHTO T 350 and ; AASHTO T 332 recommended Jnr criteria could be followed in the MSCR-based grading for ; conditions prevailing in Oklahoma. It was observed that 97% of the tested polymer-modified ; binders met the Asphalt Institute (AI) recommended minimum %Recovery and stress sensitivity. ; Acceptable %Recovery limits are proposed for both PG 70-28 and PG 76-28 binders without ; penalizing a significant number of suppliers or users. It was also found that an addition of 3% ; Sasobit® ; would reduce the rut depth by half compared to other binders. It is expected that these ; guidelines will assist ODOT in a successful transition to the latest MSCR specifications for ; binders.
  More +
• Format:
  PDF
• Funding:
  ODOT SP&R Item Number 2248
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29304/dot_29304_DS1.pdf
• File Type:
  [PDF - 4.37 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:63d0c0120607ea5f497aca15f7290f4d246cc8d0d4363506b6e4a23351869a9a2bc394ecdd54c07147d0d105e5fa6430a0e264aa209cf4eff3a7c5f22ea364d3