Third interim report on the hardening of bitumens used in surfacing trials laid to compare bitumen performance

Monitoring of the bitumen hardening in trials to compare the performance of different bitumens in thin pavement surfacings has continued and this report gives the latest results for 6 spray seal trials and one dense hot mix trial. These confirm that the ARRB durability test is a useful predictor of the relative performance of bitumens in sprayed seal constructions. Evidence was obtained from one trial that a sprayed seal will be more durable if laid on a dense bituminous construction rather than a permeable base material. In the dense hot mix trial laid on a heavily trafficked road, further compaction of traffic has taken place between 6.3 And 8 years of service. Traffic compaction has produced a 'sealed' mix in which the rate of bitumen hardening is now very slow. Bitumen durability and degree of compaction were, however, important factors influencing bitumen hardening in the first 3.8 Years of service (a).

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  • Corporate Authors:


    Melbourne, Victoria  Australia 
  • Authors:
    • Dickinson, E J
  • Publication Date: 1981-10


  • English

Media Info

  • Pagination: 21p
  • Serial:
    • Issue Number: AIR 118-7

Subject/Index Terms

Filing Info

  • Accession Number: 01438637
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 24 2012 9:39PM