INVESTIGATION OF THE SKID RESISTANCE LEVELS OF PRESENT ROADS

RESULTS ARE PRESENTED OF A STUDY OF THE SKID RESISTANCE OF GEORGIA FLEXIBLE PAVEMENTS IN TERMS OF AGGREGATE TYPE. SKID RESISTANCE VALUES WERE OBTAINED FOR EIGHT PAVEMENT-AGGREGATE TYPES' SURFACE TREATMENT-COASTAL LIMESTONE, PLANT MIX- CRYSTALLINE LIMESTONE, SURFACE TREATMENT-CRYSTALLINE LIMESTONE, PLANT MIX-GRANITE, SURFACE TREATMENT-QUARTZITE, SURFACE TREATMENT-SLAG, PLANT MIX-GNEISS, AND SURFACE TREATMENT-GNEISS. ALL SKID RESISTANCE VALUES WERE DEVELOPED FROM MEASUREMENTS TAKEN IN THE RIGHT WHEEL TRACK OF THE OUTSIDE TRAFFIC LANE WITH A BRITISH PORTABLE SKID RESISTANCE TESTER. THE LEAST SQUARES METHOD WAS EMPLOYED TO MINIMIZE THE EFFECTS OF PAVEMENT AGE AND TRAFFIC VOLUME ON THESE VALUES. WEAR INDEXES WERE PLOTTED AGAINST RESPECTIVE SKID RESISTANCE MEASUREMENTS FOR EACH PAVEMENT-AGGREGATE TYPE. SKID RESISTANCE VALUES AT WEAR INDEX 1.0 WERE USED FOR COMPARATIVE PURPOSES. MAJOR CONCLUSIONS DRAWN ARE' /1/ THE BRITISH PORTABLE TESTER WILL PROVIDE DATA THAT CAN BE USED TO DERIVE VARIATIONS IN THE SKID RESISTANCES OF DIFFERENT PAVEMENT-AGGREGATE TYPES, /2/ GNEISSIC STONE SHOWED THE HIGHEST AND LIMESTONE THE LOWEST LEVEL OF SKID RESISTANCE WITH GRANITE, QUARTZITE AND SLAG AGGREGATES HAVING SATISFACTORY CHARACTERISTICS, /3/ ALL PAVEMENT-AGGREGATE TYPES HAVE GOOD INITIAL SKID RESISTANCE BUT SOME TEND TO DEVELOP A POLISH IN TIME WHICH MAKES THEM HAZARDOUS, AND /4/ A SKID RESISTANCE VALUE BELOW 50 IS DEEMED HAZARDOUS AND THE PAVEMENT SURFACE IS IN NEED OF TREATMENT.

  • Supplemental Notes:
    • Hpr-1 /1/, BPR 4, STATE 6201
  • Corporate Authors:

    Georgia State Highway Department

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  • Publication Date: 1966-7

Subject/Index Terms

Filing Info

  • Accession Number: 00206278
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Oct 1 1994 12:00AM