THE DETERMINATION OF SKIDDING RESISTANCE OF ROAD SURFACES BY INTERPRETATION OF PHOTOS

HET BEPALEN VAN STROEFHEID VAN WEGOPERFLAKKEN DOOR INTERPRETATIE VAN FOTO'S

Photographic examination of road surfaces is supplementary to ordinary skidding resistance testing, because of the possibility of tracing causes of high or low skidding resistance. Photographs or slides are examined visually with the aid of a microstereoscope. The camera and viewing devices are described together with the photographic technique and analysis procedure. According to this method the surface texture of pavements is defined by six texture parameters (nos 1-4 relate to the macro texture and nos 5 and 6 to the micro texture). (1) height of the several stones protruding above the road surface; (2) width of the stones in the plane of attachment; (3) shape of the stones (rounded, semi angular or angular); (4) percentage of surface area occupied by stones; (5) roughness of the stones; (6) roughness of the embedding surface. Two instances are given. /TRRL/

  • Availability:
  • Corporate Authors:

    Verenging Het Nederlandsche Wegencongres

    Postbus 2200
    The Hague,   Netherlands 
  • Authors:
    • Krepel, L C
  • Publication Date: 1978-9

Language

  • Dutch

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 286-90
  • Serial:
    • WEGEN
    • Volume: 52
    • Issue Number: 9
    • Publisher: CROW
    • ISSN: 0043-2067

Subject/Index Terms

Filing Info

  • Accession Number: 00195643
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1979 12:00AM