COMPARISON OF HIGHWAY PAVEMENT FRICTION MEASUREMENTS TAKEN IN THE CORNERING-SLIP AND SKID MODES

FRICTION TESTS USING SMOOTH AND TREADED TIRES WITH 10- AND 24-PSI TIRE-INFLATION PRESSURES ON WET AND DRY SURFACES WERE TAKEN WITH A MU-METER AND THE TEXAS HIGHWAY DEPARTMENT RESEARCH SKID TRAILER. FIFTEEN PAVEMENT SURFACES THAT EXHIBITED WIDELY DIFFERENT FRICTION LEVELS, FRICTION-VELOCITY GRADIENTS, DRAINAGE CAPABILITIES, MINERALOGICAL PROPERTIES, AND TEXTURE CLASSIFICATIONS WERE INVESTIGATED. PAVEMENT MACROTEXTURE TESTS WERE CONDUCTED BY VOLUMETRIC AND MECHANICAL ROUGHNESS DETECTOR METHODS. COMPARISONS AND RELATIONSHIPS BETWEEN VARIOUS FRICTION PARAMETERS AS OBTAINED WITH BOTH INSTRUMENTS WERE MADE. STATISTICAL ANALYSES AND TYPICAL PLOTS ARE GIVEN. FRICTION TESTS OBTAINED WITH BOTH INSTRUMENTS COMPARED FAVORABLY, PROVIDED SIMILAR TIRE TREAD CONFIGURATIONS WERE USED. ON AN AVERAGE, SLIGHTLY HIGHER FRICTION FORCES WERE AVAILABLE IN THE SLIP MODE OF OPERATION (MEASURED BY MU-METER) THAN IN THE SKID MODE (MEASURED BY SKID TRAILER). THE IMPORTANCE OF PROVIDING ADEQUATE DRAINAGE IN THE TIRE-PAVEMENT CONTACT AREA IS STRESSED. TESTS MADE WITH SMOOTH AND TREADED TIRES IN BOTH THE SLIP AND SKID MODE EMPHASIZED THE IMPORTANCE OF PAVEMENT SURFACE MACROTEXTURE AT SPEEDS OF 40 MPH OR MORE. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 107-122
  • Monograph Title: Anti-Skid Program Management and Related Papers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207435
  • Record Type: Publication
  • ISBN: 0309019907
  • Files: TRIS, TRB
  • Created Date: Jun 5 1972 12:00AM