COMPOSITION AND RHEOLOGY CONSIDERATIONS IN AGE HARDENING OF BITUMEN

This work shows how asphaltic bitumens have different rheological properties because of crude source, how the inherent nature of each component fraction varies in rheology, and how changes in composition occur with aging. This is based on the 4 generic fraction composition analysis, in which 2 fractions are found to be liquids and 2 are solids. The liquid fractions have a softening or plasticizing effect. The individual flow level, temperature susceptibility, and shear susceptibility of 3 of the petrolene fractions are quite different, each making a specific contribution to the flow and consistency of the total bitumen. The compositional changes during aging, and the corresponding effect on flow, help to explain serviceability of pavements.

• Supplemental Notes:
  • Symposium. Asphalt Durability: Source and In-Service Effects
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Corbett, L W
  • Schweyer, H E
• Conference:
  • Association of Asphalt Paving Technologists Proceedings
• Publication Date: 1981

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 571-582
• Serial:
  • Volume: 50

Subject/Index Terms

• TRT Terms: Asphalt pavements; Bituminous mixtures; Bituminous pavements; Durability; Highway engineering; Highway transportation; Pavement components; Pavement performance; Paving materials; Rheological properties
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00930914
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 21 2002 12:00AM