COMPOSITIONAL CONSIDERATIONS OF ASPHALT FOR DURABILITY IMPROVEMENT

An investigation was performed to determine whether a laboratory procedure could be established that could provide a means to distinguish the durability (aging) qualities of asphalts when both their chemical and physical characteristics are considered. The investigation was also aimed at developing the means for predicting the effects on viscosity or an aging index of the interblending of various sources of asphalt. The investigation compared the effects on viscosity and aging indexes among asphalts, asphalt blends, and asphalt-additive blends. The research indicated that (a) asphalts can be blended to achieve practically any desired viscosity or aging index or combination of both, (b) Gilsonite in small quantities can be added to asphalt to achieve a desired viscosity without a subsequent loss of durability, (c) the chemical reactivity ratio can predict which base stock asphalts will age the fastest, and (d) the second acidaffin fraction appears to be the most important fraction for the improvement of durability (aging) and is available in commercial products or in selected asphalts for blending.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 46-55
  • Monograph Title: Asphalt properties and performance
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00128541
  • Record Type: Publication
  • ISBN: 0309023998
  • Files: TRIS, TRB
  • Created Date: May 14 1976 12:00AM