Laboratory Evaluation of Asphalt Binder Rutting, Fracture, and Adhesion Tests

The current performance grading (PG) specification for asphalt binders was developed based on the Strategic Highway Research Program (SHRP) and is based primarily on the study of unmodified asphalt binders. Over the years, experience has proven that the PG grading system, while good for ensuring overall quality, fails in some cases to predict rutting and cracking performance, particularly as it applies to softer but highly modified binders. Therefore, it is necessary to improve current asphalt binders performance parameters and associated specification limits, especially for modified binders. This report documents the laboratory evaluation of several new tests for rutting, fatigue, and adhesion property of asphalt binders, including the multiple stress creep and recovery (MSCR) test, linear amplitude sweep (LAS) test, double edged notched tension (DENT) test, elastic recovery test, pull-off test, pneumatic adhesion tensile testing instrument (PATTI), dynamic mechanical analyzer (DMA) test and surface energy test. It was found that the MSCR test and associated specification works better than the current G*/sinð-based PG specification, especially for those highly modified asphalt binders (such as PG64-34).

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: 75p

Subject/Index Terms

Filing Info

  • Accession Number: 01526396
  • Record Type: Publication
  • Contract Numbers: 0-6674
  • Files: TRIS, ATRI, STATEDOT
  • Created Date: May 7 2014 10:58AM