Enhanced In-Place Density: Different Specification Types Can Be Used To Achieve Performance

Details

• Corporate Creators:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Asphalt pavements
  • Service life
  • Pavement performance
  • Testing
• Publication/ Report Number:
  FHWA-HIF-20-094
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Highway Administration
• Abstract:
  Although several factors can influence the performance of an asphalt pavement, one of the most important is in-place density. A small increase in density can potentially lead to a significant increase in service life of asphalt. Highway agencies use specifications to achieve acceptable in-place density on their asphalt pavements. Density acceptance test results were analyzed from several Departments of Transportation (DOTs) across the country to determine the state of practice for achieving in-place density. The results were used to identify DOTs with effective in-place density specifications that minimized the amount of test results below the 92.0 percent threshold. Most agencies with highly effective specifications used either percent within limits (PWL) or a lot average approach.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/71840/dot_71840_DS1.pdf
• File Type:
  [PDF - 15.30 MB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:b0d8a20ae351017b793b2a59382c658dbb4c2b5ddb034d7107df71f2c8f2d4d993c0e874e44960450417b2c96fb05fbc4cb232d718ecf63f2d1ff4c14ae736f2