Cost benefit analysis of anti-strip additives in hot mix asphalt with various aggregates.

Details

• Creators:
  Christensen, Donald ; Morian, Dennis ; Wang, William
• Corporate Creators:
  Advanced Asphalt Technologies, LLC
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Benefit cost analysis
  • Antistrip additives
  • Hot mix paving mixtures
  • Asphalt concrete
  • Life cycle analysis
  • Moisture content
  • Aggregates
• Publication/ Report Number:
  FHWA-PA-2015-004-110204
• Resource Type:
  Tech Report
• Geographical Coverage:
  Pennsylvania
• Corporate Publisher:
  Pennsylvania. Dept. of Transportation. Bureau of Planning and Research
• Abstract:
  This report documents research on moisture sensitivity testing of hot-mix asphalt (HMA) mixes in Pennsylvania and the ; associated use of antistrip. The primary objective of the research was to evaluate and compare benefit/cost ratios of mandatory use ; of antistrip, and of antistrip usage conditional on the results of moisture resistance testing, based upon life cycle cost analyses. A ; secondary objective was to evaluate a unique version of the modified Lottman procedure used in Pennsylvania between 2003 and ; October 2014, which involved a relatively low level of saturation in specimen conditioning. This procedure (low-saturation method) ; typically results in saturation between about 30 % and 67 %, as compared to the 70 to 80 % required in the test version used by ; Pennsylvania prior to 2003 and after October 2014 (high-saturation method). It was found that the low-saturation method passed all ; HMA mixes, even those with a documented history of high susceptibility to moisture damage. This procedure therefore had a ; benefit/cost ratio of zero. For the high-saturation method, it was found that both antistrip usage dependent on the results of testing ; and mandatory usage for all mixes had benefit/cost ratios that were greater than one and in general much greater than one. The ; benefit/cost ratios for mandatory antistrip usage were greater than those for conditional usage, because of the high cost associated ; with the failure of moisture resistance testing to identify all moisture susceptible mixes.
  More +
• Format:
  PDF
• Funding:
  355I01 - 110204
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29157/dot_29157_DS1.pdf
• File Type:
  [PDF - 1.84 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:32f8e5dce88a0d300cc79279fddfd7d67089bd4dc41273f86c1618207c028a8d