This is a report on the state of the art of research on the phenomenon of the aging of asphalt-aggregate mixtures. Compared to research on the aging of asphalt cement, there has been little research on the aging of asphalt mixtures. Binder studies are considered as well as mixture sutdies, the relationship between laboratory aging tests and field performance, and the relationship between chemical composition and field performance. Recommendations are made for aging procedures which show promise for laboratory investigation. Test methods to evaluate aging are also considered. It is noted that extended heating procedures show the most promise for short-term aging and pressure oxidation and/or extended heating the most promise for long-term aging. Such procedures are also considered for long-term aging, together with oxidation techniques. Promising test methods to evaluate the effects of aging of mixtures include: resilient modulus, indirect tensile test, and the dynamic modulus test. Tests on recovered asphalt will also be necessary. Microviscosity and ductility tests will be considered together with chemical fractionation tests.

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  • Supplemental Notes:
    • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Corporate Authors:

    Strategic Highway Research Program

    National Research Council, 2101 Constitution Avenue, NW
    Washington, DC  United States  20418
  • Authors:
    • Bell, C A
  • Publication Date: 1989-11-1

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: V.P.

Subject/Index Terms

Filing Info

  • Accession Number: 00494622
  • Record Type: Publication
  • Report/Paper Numbers: SHRP-A-305
  • Files: TRIS, TRB, ATRI
  • Created Date: Jun 30 1990 12:00AM