BINDER CHARACTERIZATION AND EVALUATION. VOLUME 2: CHEMISTRY

Asphalts were separated into components by means of preparative ion exchange chromatography, preparative size exclusion chromatography, and other methods. Asphalt rheological properties were rationalized by chemical parameters such as molecular weight, molecular size distributions, and polarity factors. Analytical methods such as streamlined preparative size exclusion chromatography, supercritical fluid chromatography, and potentiometric titration were adapted for asphalt analysis. Results of a study of the mechanism of asphalt oxidation indicate that oxidative aging at service temperatures proceeds by some pathway other than a classical radical-chain. Extensive kinetic experiments at moderate temperatures and high partial pressures of oxygen show that the physical state of an asphalt affects the aging process, and that aging tests conducted at temperatures much greater than service temperature are likely yield results that do not correspond to actual field aging.

• Record URL:
  http://onlinepubs.trb.org/onlinepubs/shrp/SHRP-A-368.pdf
• 
• 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:
  • Branthaver, J F
  • Petersen, J C
  • Robertson, R E
  • Duvall, J J
  • Kim, S S
  • HARNSBERGER, P M
  • Mill, T
  • Ensley, E K
  • Barbour, F A
  • Scharbron, J F
• Publication Date: 1993-11

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 479 p.

Subject/Index Terms

• TRT Terms: Binders; Chemistry; Chromatography; Molecular structure; Molecular weight; Oxidation; Rheology; Size; Temperature
• Identifier Terms: Strategic Highway Research Program
• Old TRIS Terms: Aging; Molecular size
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00646294
• Record Type: Publication
• Report/Paper Numbers: SHRP-A-368
• Files: TRIS, TRB, ATRI
• Created Date: Apr 6 1994 12:00AM