SKID RESISTANCE OF BITUMINOUS SURFACES IN OHIO

Statistical studies of skid number (SN) on the state highway system in Ohio reveal apparently systematic variations in distributions of SN among the twelve districts in the state. These variations appear to be significantly related to traffic and to geological characteristics of a given district. Regression calculations using traffic index, a function of ADT and age of the pavement surface in months, showed a high correlation with SN, although standard errors of estimate were too large to make the equations useful for "predicting" SN from traffic variables. Similar results were obtained by relating SN to physiographic features in the state. Pavement surface type (bituminous or pcc) and coarse aggregate type (limestone, gravel or slag) are significantly related to SN. Further research is recommended to identify aggregate properties pertinent to SN and to investigate the effect of mix design. Several alternative policies are outlined for allocating funds among districts for upgrading SN at potentially hazardous locations, with the objective of equalizing skidding hazard throughout the state. One of the suggested final allocation policies also requires further research. (FHWA)

• Corporate Authors:

  University of Toledo

  Department of Civil Engineering, 2801 West Bancroft Street
  Toledo, OH  United States  43606-3390

  Ohio Department of Transportation

  P.O. Box 889
  Columbus, OH  United States  43215

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Colony, D C
• Publication Date: 1984-3

Media Info

• Pagination: 131 p.

Subject/Index Terms

• TRT Terms: Age; Aggregates; Average daily traffic; Bituminous materials; Coarse aggregates; Geology; Hazards; Mix design; Skid resistance; Skidding; Surface treating; Transportation
• Uncontrolled Terms: Fund allocations; Skid number
• Old TRIS Terms: Aggregate characteristics; Bituminous surfacing
• Subject Areas: Materials; Pavements; Transportation (General); I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00388842
• Record Type: Publication
• Report/Paper Numbers: FHWA-OH-84-006 Final Rpt.
• Contract Numbers: ST Job 14365(0)
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 28 1984 12:00AM