Skid resistance, the change in wet skid resistance with speed, tyre abrasion, tyre to road noise and riding comfort are all facets of tyre/road interaction which are either dominated, or very greatly influenced, by the texture of the road surface. The long-established concepts of microtexture and macrotexture have been further investigated. New techniques for the study of aggregate microtexture by means of the scanning electron microscope have been initiated. A new theory to account for the drainage characteristics of road surface macrotexture has also been formulated, together with a new method for determining these drainage characteristics by outflow meter and relating outflow time to the friction versus speed relationship; a new method of mix design for the formulation of a range of high friction dense asphalts (these have been manufactured and sold under the name 'delugrip") and pavement concretes, incorporating the findings of the above studies, has been developed. The paper outlines the main features of some of these studies and gives reference to others, relating them to further studies which have been carried out and to alternative methods of test and design which exist in this field of investigation. Results from surfacings which have been manufactured and laid in accordance with the principles presented are given. /TRRL/

  • Availability:
  • Corporate Authors:

    Whitehall Technical Press Limited

    Wrotham Place
    Wrotham, Sevenoaks, Kent ME14 1PE,   England 
  • Authors:
    • BOND, R
    • Katekkda, IED
    • Lees, G
  • Publication Date: 1976-11

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 11-20
  • Serial:
    • Highway Engineer
    • Volume: 23
    • Issue Number: 11
    • Publisher: Whitehall Press Limited
    • ISSN: 0306-6452

Subject/Index Terms

Filing Info

  • Accession Number: 00149100
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Jul 2 1977 12:00AM