AGGREGATES AND SKID RESISTANCE. SKID RESISTANCE STUDY - FINAL REPORT

The goal of this study was to correlate the results of a laboratory test procedure measuring aggregate polish resistance with skid resistance in bituminous pavements. This correlation would be instrumental in identifying skid-resistant aggregates, and would create the potential for assuring lifelong skid-resistant bituminous pavements. This study was conducted in two phases. The first estimated the empirical relationship between aggregate microtexture and cumulative polishing using a modification of ASTM D-3319 and ASTM E-303. An exponential model was developed which realistically approximates the minimum polish value observed with the theoretical asymptote of the polishing rate curve. The magnitude of this asymptote, PV, correlated well with New Jersey's skid resistance experience with specific aggregate types and was subsequently used in the study's second phase. In the second portion of this study, a more detailed relationship between PV and long-term minimum skid resistance was sought. Experiments were conducted to evaluate polish values of aggregates and skid resistance of bituminous pavements composed of these aggregates, and to collect environmental data on selected skid test sites over a period of one year. This information was used to normalize the skid resistance of a bituminous pavement in terms of the aggregate's polish value and cyclical environmental factors. Additional research is required to check and refine the models developed. This report concludes with a detailed description of the work to be accomplished in order to finalize this analysis and implement a statistical specification for the prequalification of surface course aggregates based on polish resistance.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 62 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00605665
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/NJ-89-008-7110, NCP 4A5G0052
  • Contract Numbers: Study 7711
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Mar 31 1991 12:00AM