RHEOLOGICAL PROPERTIES OF CHEMICALLY MODIFIED ASPHALTS

Asphalt chemically modified with furfural and furyl acrolein was performance graded (PG), and its performance was predicted according the criteria developed by the Strategic Highway Research Program (SHRP). These asphalts were aged in a thin film oven, a rolling thin film oven, and a pressure aging vessel to investigate the aging behaviors of the chemically modified asphalts. The rheological properties were determined from 10 deg C through 70 deg C by the dynamic shear rheometer and from -25 deg C through -5 deg C by the bending beam rheometer. By using the SHRP criteria chemical modification was shown to increase the temperature range over which the asphalt can be used by primarily increasing the high-temperature stiffness of the asphalt. Differences in properties and PG grading were observed when the asphalts were aged in a rolling thin film oven compared with that when they were aged in the thin film oven, especially for the modified asphalts. The resistance to rutting was predicted to increase with chemical modification. The resistance to fatigue was predicted to change insignificantly at the range of temperatures considered in the PG specifications. The low-temperature properties were not significantly affected because of modification.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1995/1488/1488-010.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=RHEOLOGICAL+PROPERTIES+OF+CHEMICALLY+MODIFIED+ASPHALTS&author=N.+Shashidhar&author=S.+Needham&author=B.+Chollar&publication_year=1995
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1488, Unmodified and Modified Asphalt Binders. 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
• Authors:
  • Shashidhar, N
  • Needham, S P
  • Chollar, Brian H
• Publication Date: 1995

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 89-95
• Monograph Title: Unmodified and modified asphalt binders
• Serial:
  • Transportation Research Record
  • Issue Number: 1488
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Additives; Aging (Materials); Asphalt; Fatigue (Mechanics); Oven tests; Performance evaluations; Pressure vessels; Rheological properties; Rutting; Stiffness; Temperature; Thin films
• Identifier Terms: Strategic Highway Research Program
• Uncontrolled Terms: Accelerated aging; Pressure aging vessels; Rolling thin film oven test; Thin film oven test
• Old TRIS Terms: Furfural; Furyl acrolein
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00714797
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Nov 29 1995 12:00AM