THE CONSTITUTION AND QUALITY OF PAVING GRADE ASPHALTS PRODUCED BY AIR BLOWING DISTILLATION RESIDUES OF KUWAIT AND "LIGHT ARABIAN" CRUDE OIL

The constitution and physical behavior of asphalts from Kuwait and light Arabian crude oil were studied, the manner in which they were affected by blowing at high temperature with air was investigated, and improved methods for refinery blowing operation are suggested. The Kuwait residue gives satisfactory paving grade materials but improved resistance to hardening is obtained if the blowing is done at the lowest practicable temperature. This is because the reduction of the temperature changes the nature of the chemical reactions taking place; polymerization takes place rather than intramolecular condensiation. The light Arabian residue gives paving grade materials with less satisfactory performance than those from the former source, and lack naphthemic structures. After blowing, this shows a high "shear susceptibility" and low ductility particularly after treatments simulating the coating of hot aggregate. The chemical reactions taking place are mainly by intramolecular condensation and reduction of the blowing temperature does not produce any significant improvement in resistance to hardening.

  • Corporate Authors:

    University of Minnesota, Minneapolis

    155 Experimental Engineering Building
    Minneapolis, MN  United States  55455
  • Authors:
    • Dickinson, E J
  • Conference:
  • Publication Date: 1974

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 132-161
  • Serial:
    • Volume: 43

Subject/Index Terms

Filing Info

  • Accession Number: 00125400
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM