Evaluation of DOTD Aggregate Friction Rating Table by Field Measurements: [Tech Summary]

Details

• Creators:
  Wu, Zhong
• Corporate Creators:
  Louisiana Transportation Research Center
• Subject/TRT Terms:
  • Friction tests
  • Field tests
  • Coarse aggregates
  • Statistical analysis
  • Texture
  • Skid resistance tests
  • Design
  • Highways
  • Materials
  • Pavements
• Publication/ Report Number:
  LTRC Project No. 12-5P
• Resource Type:
  Brief
• Geographical Coverage:
  United States ; Louisiana
• Edition:
  Tech Summary
• Corporate Publisher:
  Louisiana Transportation Research Center
• Description:
  Currently, the Louisiana Department of Transportation and Development (DOTD) uses the aggregate friction rating table based on polished stone value (PSV) of coarse aggregates as the friction guidelines for wearing course. However, PSV only considers the frictional characteristic of coarse aggregates and is just one of many factors that affect the field friction performances. Therefore, there is a need to modify the current aggregate friction rating table by using the indices that can reflect the real field friction performance with proper threshold values. In this way, the Department will have the flexibility to specify aggregates for asphalt mixtures with various qualities to achieve better cost-benefit ratios and enhance the use of locally available aggregates.
• Format:
  PDF
• Funding:
  State Project No. 30000609
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/39571/dot_39571_DS1.pdf
• File Type:
  [PDF - 195.04 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:fe5a9c4db87ea044b9e6b7519039209d7a057588040b794c12f872643269d386