New research is reported about a chemical component, amphoterics, that is claimed is the key to asphalt performance. This will enable manufacturers to improve the performance of asphalt materials, and engineers will be able to design pavements to take better advantage of the physical and chemical properties of asphalt. Amphoterics are molecules that have both positive and negative aspects, and so link together. These are polar forces, and the sum of all polar forces gives asphalt its properties. The new concept replaces the traditional micellar theory and better explains how asphalt cement behaves in pavements. It is expected that the material will be used in its optimal form with specifications based on fundamental performance related properties. The breakthrough was announced by the Strategic Highway Research Program (SHRP).

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  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1991-8-5

Media Info

  • Pagination: p. 9
  • Serial:
    • ENR
    • Volume: 227
    • Issue Number: 5
    • Publisher: McGraw-Hill, Incorporated
    • ISSN: 0891-9526

Subject/Index Terms

Filing Info

  • Accession Number: 00611208
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 31 1991 12:00AM