Development of Alternative High Friction Surfaces for Oklahoma

Details

• Creators:
  Heitzman, Michael ; Vrtis, Michael C.
• Corporate Creators:
  Auburn University. National Center for Asphalt Technology
• Corporate Contributors:
  Oklahoma Department of Transportation. Materials and Research Division ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Adhesive Bond Strength Asphalt Mixtures Friction Friction Course Laboratory Studies Open Graded Aggregates Pavement Performance Sandstones Shear Tests Tack Coats
• Publication/ Report Number:
  FHWA-OK-15-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Oklahoma
• Edition:
  Final Report September 2014 – December 2015
• Corporate Publisher:
  Oklahoma. Department of Transportation
• Abstract:
  Oklahoma DOT wanted to identify maximum surface friction performance of asphalt surface mixtures using regionally available aggregates as alternatives to a standard high friction surface treatment using resin binder and imported calcined bauxite aggregate. The laboratory study was divided into two phases. Phase I compared aggregate/mixture combinations that were expected to have the best potential to provide high pavement surface friction characteristics. Phase II studied the types of tack coats to determine the best tack application for the selected friction surface. The OK DOT staff identified regionally available sources with good friction performance characteristics, including mine chat, rhyolite, sandstone, and granite. The mixture type selected for the study was open graded friction course (OGFC). A testing and conditioning protocol developed at NCAT was used for measuring the friction performance of pavement surfaces. Based on the Phase I friction results, the sandstone OGFC section was selected for further study on the NCAT Pavement Test Track. Variables in the Phase II tasks were one type of tack coat and two application rates. Preparing laboratory slabs involved compacting the underlying slab, conditioning the surface of the slab, applying the tack coat, and placing the OGFC layer on top. Cores were taken from the slabs for bond strength shear testing. Cores from the slabs with the higher tack coat application rate had higher interface bond strength.
• Format:
  PDF
• Funding:
  2269
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b74cbba7685c24f6b6cf9802e787fed0a21816f97c7818656e68a00567236b20115c7ef79b8be6c29bcbe13bb000fa8a9963d213bb9e971893f6ae2decc4a926
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89158/dot_89158_DS1.pdf
• File Type:
  [PDF - 1.01 MB ]