SURVEY OF THE SKID RESISTANCE PROPERTIES OF ASPHALT SURFACINGS

TESTS WERE MADE OF THE SKID-RESISTANCE PROPERTIES OF ASPHALT SURFACINGS BY THE APPLICATION OF A LIGHT TRAILER APPARATUS CONSTUCTED IN ACCORDANCE WITH THE MODEL DEVELOPED BY ROAD RESEARCH LABORATORY. IN ALL, THE INVESTIGATIONS RELATED TO 102 ROAD SECTIONS, ABOUT 1000 KM IN TOTAL LENGTH. ROAD SECTIONS AT LEAST ONE YEAR IN AGE WERE MEASURED IN REGARD TO THEIR SKID-RESISTANCE PROPERTIES, THE EFFECT OF TYPE TREAD PATTERN AND STUDS UPON THE COEFFICIENT OF FRICTION, AND THE EFFECT AND SIGNIFICANCE OF THE WEARING INDUCED BY SANDING MATERIAL AND TRAFFIC UPON THE COEFFICIENT OF FRICTION. MEASUREMENTS WERE EFFECTED AT SPEEDS OF 50, 70 AND 90 K.P.H. THE RESULTS OBTAINED INDICATE THAT WITH A FEW EXCEPTIONS THE SKID-RESISTANCE VALUES ARE FAIRLY GOOD. THE MEAN SKID-RESISTANCE VALUES IN RESPECT OF ASPHALT CONCRETE AND GRAVEL ASPHALT CONCRETE SURFACINGS ABOUT ONE YEAR OLD ARE GIVEN. THESE VALUES WERE SOMEWHAT HIGHER ON OLDER SURFACINGS. IT WAS FOUND THAT THE TYRETREAD PATTERN, THE STUDDING, AND ALSO THE GRAIN SIZE OF SANDING MATERIAL CONSIDERABLY AFFECTED THE VALUE OF THE COEFFICIENT OF FRICTION; SIMILARLY, IT IS CAHNGED ESSENTIALLY BY THE WEARING RESULTING FROM TRAFFIC. /AUTHOR/

• Supplemental Notes:
  • 40 Pp, 26 FIG, 3 TAB, 14 REF
• Corporate Authors:

  State Institute of Technical Research, Finland

  Lonnrotinkatu 37
  Helsinki 18,   Finland 
• Authors:
  • Hyyppa, J M
• Publication Date: 1969

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt concrete; Bituminous materials; Coefficient of friction; Grain size (Geology); Skid resistance; Skid resistance tests; Studs; Surface treating; Tire treads; Tires
• Old TRIS Terms: Bituminous surfacing
• Subject Areas: Highways; Materials; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00207087
• Record Type: Publication
• Files: TRIS
• Created Date: May 25 1970 12:00AM