THE INFLUENCE OF PRECOATED CHIPPINGS ON THE SKID RESISTANCE OF HOT ROLLED ASPHALT

THE ASSUMPTION THAT INCREASED ROUGHNESS IMPROVES SKIDDING RESISTANCE OF ASPHALT WAS EXAMINED DURING INVESTIGATIONS CARRIED OUT IN GLASGOW. A RELATIONSHIP WAS SOUGHT BETWEEN THE AREA OF STONE PRESENTED TO THE TIRE, AND THE SKID RESISTANCE. IT WAS CONCLUDED THAT THE GOOD SKID RESISTANCE OFFERED BY A MATRIX OF 50% REFINED TRINIDAD LAKE ASPHALT AND 50% REFINERY BITUMEN WAS REDUCED BY THE ADDITION OF COATED CHIPPINGS, WHICH HAVE A TENDENCY TO POLISH. THE ABSENCE OF COATED CHIPPINGS CAUSES A WET ROAD TO APPEAR GLASSY TO THE DRIVER. IT IS THUS SUGGESTED THAT A SATISFACTORY COMPROMISE WOULD INVOLVE A SKID RESISTANT MATRIX WITH ONLY AS MANY COATED CHIPPINGS AS ARE NECESSARY TO PREVENT THE WET GLASSY APPEARANCE.

  • Supplemental Notes:
    • Vol126, No3832, PP27-30, 7FIG, 3PHOT, 1TAB, 6REF
  • Authors:
    • Findlay, I B
  • Publication Date: 1965-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00210534
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 11 1970 12:00AM