ASPECTS OF THE RELATIONSHIP BETWEEN BITUMEN COMPOSITION AND PERFORMANCE. BITUMINOUS ROADS IN THE 1990S. SEMINAR PAPERS. DUBLIN, 1 NOVEMBER, 1990

This paper presents a report on the Strategic Highway Research Program effort to identify and quantify significant ties between bitumen composition and pavement performance. Investigations are reported which relate to the following areas: current U.S. specification practice in regard to bitumen composition; the chemical diversity of U.S. and Canadian bitumens; the SHRP materials reference library; the 'strong acid' concept and its application to a model for bitumen performance; permanent deformation, fatigue cracking and low-temperature - the effect of intermolecular structures; oxidative aging and its effects on molecular associations; and adhesion and moisture sensitivity - bitumen-aggregate interactions. A model relating bitumen compostion to pavement is proposed. It describes the performance in terms of an elastic network of structural units, formed through the association of molecules containing polar functional groups and aromatic ring structures and dispersed in a mobile phase composed of less polar or nonpolar molecular species.

  • Corporate Authors:

    Institute of Asphalt Technology, Irish Branch

    Unit 18, Central Trading Estate
    Staines, Middlesex,   England 

    Institution of Engineers of Ireland

    22 Clyde Road
    Dublin 4,   Ireland 
  • Authors:
    • Harrigan, E T
  • Publication Date: 1991

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Filing Info

  • Accession Number: 00616605
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 30 1992 12:00AM