Friction management on Kansas Department of Transportation highways.

Details

• Creators:
  Zahir, Humaira ; Islam, Shuvo ; Hossain, Mustaque
• Corporate Creators:
  Kansas State University. Transportation Center
• Corporate Contributors:
  Kansas. Dept. of Transportation. Bureau of Research
• Subject/TRT Terms:
  • Friction course
  • Surface course (Pavements)
  • Rolling friction
  • Sliding friction
  • Skidding
  • Hydroplaning
  • Vehicle factors in crashes
  • Pavement Friction
  • Friction Management
  • High Friction
  More +
• Publication/ Report Number:
  Report No. K-TRAN: KSU-14-5
• Resource Type:
  Tech Report
• Geographical Coverage:
  Kansas ; United States
• Corporate Publisher:
  Kansas State University. Transportation Center
• Abstract:
  The Federal Highway Administration (FHWA) estimates that about 70% of wet pavement crashes can be ; prevented or minimized by improving pavement friction. High Friction Surface Treatment (HFST), a speciallydesigned ; thin surface application of hard aggregates and thermosetting resins like epoxy, has been proven to be an ; effective method to increase road surface friction. Calcined bauxite has been predominantly used in the United States ; as the hard aggregate in combination with an epoxy binder for HFST. However, this treatment is expensive since the ; calcined bauxite is imported. The objectives of this study are to evaluate the performance of a local aggregate in HFST ; and to evaluate the 3-dimensional laser profiler for measuring pavement texture. Slab specimens of hot-mix asphalt ; (HMA) were compacted in the laboratory and treated with HFST systems incorporating both calcined bauxite and a ; local, hard flint aggregate from Picher, Oklahoma. The treated HMA specimens were then tested with a Dynamic ; Friction Tester (DFT) and a Circular Track Meter (CTM) to determine the frictional coefficient and texture depth, ; respectively. Also, Hamburg Wheel Tracking Device tests were conducted on these HFST systems to evaluate wearing ; resistance under repetitive wheel load. Field measurements of texture depths on HFST were also done. Statistical ; analysis was performed to compare the performance of high friction surfaces prepared with different aggregate epoxy ; combinations. The results show that flint aggregate can be a suitable substitute for the calcined bauxite in HFST. Field ; measurements also showed marked improvements in texture depth with HFST. Texture depth and skid number ; determined by the ASTM skid trailer vary with pavement surface types and treatments. Mean Texture Depth (MTD) of ; high friction surface treatment is generally greater than 1 mm. A good correlation between skid number and MTD was ; found for the MTD range of 0.5 to 1.5 mm.
  More +
• Format:
  PDF
• Funding:
  C2000
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32229/dot_32229_DS1.pdf
• File Type:
  [PDF - 2.96 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:8fa532bcc95215538e8cce75dfc0dbc04f2d435c734f32a73d3892d104582b0b