The basic principles used in pavement design are summarized and a rapid laboratory test is described for unknown binders which have not been tried out in practice. The effect of paraffin content is discussed and the observation is made that effective criteria may be obtained with mechanical tests utilizing the Ewers-Walter or other apparatus. Mechanical test procedures are described for bitumen-aggregate mixes. For emulsion tests, the plate-dropping apparatus is recommended even for routine tests. It has also been observed that the addition of 3 percent buna latex gives a significant improvement in the cohesion of the bitumen. It is believed that stone (limestone) ground in a ball type mill possesses the best properties, and a method is described for determining the masticity limit.

  • 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:
    • Ewers, N
    • Guericke, P
    • Muller, F
    • Pilz, P
    • Strunck, K
    • Walter, G
    • Weinert, F
  • Publication Date: 1971

Media Info

  • Features: Figures; Tables;
  • Pagination: 39 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00265689
  • Record Type: Publication
  • Report/Paper Numbers: Book II-8
  • Files: TRIS
  • Created Date: Feb 27 1975 12:00AM