THE WETTING OF STONE BY ROAD BINDERS. PART 2 TARS, BITUMENS AND THEIR MIXTURES

Capillary wetting theory shows that a liquid which exhibits, on a solid surface, a contact angle of less than 90 deg will rapidly wet that surface. Road binders are shown to exhibit such an angle at roughly the same viscosity. This viscosity, where the contact angle is 90 deg when measured on polished stone, is somewhat lower than that observed in commercial practice or in other laboratory experiments on chippings. The difference arises from the lack of applied pressure in the contact angle work and the differences in nature of the relevant stone surfaces. The principle of a critical wetting viscosity is however established and explained. This work, and that in part I, were confined to the use of dry stone. /Author/TRRL/

  • Corporate Authors:

    Coal Tar Research Association

    Chemical Engineering Section
    Cleckheaton, West Yorkshire,   England 
  • Authors:
    • Briggs, DKH
  • Publication Date: 1970-5-14

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184296
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Report 0442 Monograph
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM