The ageing characteristics of asphaltic bitumens was studied over a period of 18 months with special reference to the changes observed in softening point values of specimens, particularly those completely exposed to the open air. Details are given of the preparation and storing of specimens of plain asphaltic bitumen, and of mortars of bitumen and mineral filler prepared in various combinations by using three different grades of asphalt cement and nine different types of mineral filler. The following properties of the specimens were assessed periodically: penetration values, softening point values, absolute viscosities, rate of compression, changes in weight and surface textures. The results obtained are tabulated, and the conclusions drawn from the study are presented.

  • Supplemental Notes:
    • Presented at the XIVth World Road Congress, Prague, Czechoslovakia, 1971.
  • Corporate Authors:

    Permanent International Assoc of Road Congresses

    43 Avenue du President Wilson
    Paris 16eme,   France 
  • Authors:
    • Yagiz, F
    • Isiksalan, C
  • Publication Date: 1971

Media Info

  • Features: Figures;
  • Pagination: 22 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00265705
  • Record Type: Publication
  • Report/Paper Numbers: Book II-24
  • Files: TRIS
  • Created Date: Feb 27 1975 12:00AM