LABORATORY PAVEMENT POLISHING DEVICE (WEAR MACHINE) VS. FIELD FRICTION TEST UNITS AND ACCUMULATIVE AVERAGE DAILY TRAFFIC-PHASE II-CORRELATION STUDY

The Florida Department of Transportation has been actively conducting programs to study pavement friction characteristics for the past twelve years. These programs have encompassed studies of aggregate qualities, asphalt concrete pavement designs, traffic wear and polishing characteristics that influence corrective maintenances of pavements where surfaces have become slippery. Phase I (Fla. HPR Study P-4-68) of this program involved predicting in-situ pavement friction values by testing pavement samples in a Laboratory Pavement Polishing Device, developed to determine aggregate wear. Results from this correlation were favorable, but additional testing was needed to verify these findings. Phase II of the program was to determine if degrees of pavement wear (vehicular traffic) could be predicted from testing samples of in-service pavements in the Laboratory Pavement Polishing Device and to verify the testing from Phase I. This investigation was made on asphaltic concrete pavements, primarily friction courses used in Florida. These pavements were tested at different levels of accumulative traffic (ADT) for approximately 2 years. For the pavements tested in Phase II of this study, no general relationship was found between wear number (WN24) and field friction number (FN40). Further no reliable relationship was found to exist between accumulative traffic (ADT) and wear number of friction number. (FHWA)

• Corporate Authors:

  Florida Department of Transportation

  Office of Materials and Research, P.O. Box 1029
  Gainesville, FL  United States  32602

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Publication Date: 1981-4

Media Info

• Pagination: 60 p.

Subject/Index Terms

• TRT Terms: Average daily traffic; Correlation analysis; Field tests; Friction; Laboratory tests; Pavements; Polished aggregates; Skid resistance; Skidding; Testing equipment; Wear
• Old TRIS Terms: Frictional properties
• Subject Areas: Data and Information Technology; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00341187
• Record Type: Publication
• Report/Paper Numbers: FHWA-FL-81-240 Final Rpt., FL/DOT/OMR-81/240
• Contract Numbers: Study P-9-78
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 22 1981 12:00AM