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Title: Oxidation and photooxidation of asphalts

Abstract

Oxidation of asphalt is a major cause of pavement failure owing to hardening of the asphalt binder with accompanying changes in viscosity, separation of components, embrittlement and loss of cohesion and adhesion of the asphalt in the mix. However oxidation of asphalt-aggregate mixes at high temperature is deliberately done to partly harden the mix prior to laydown; hardening then continues during cooling. Excessive hardening at this point is undesirable because of embrittlement and cracking. Slow oxidation of asphalt continues during the service life of the roadbed at a rate that appears to be partly determined by the void volume of the roadbed, as well as the properties of the asphalt and (possibly) the properties of the aggregate. The authors focused their efforts on understanding the mechanistic basis for slow oxidation of asphalt under service conditions in order to predict how rapidly an asphalt will oxidize, based on its composition, and to find better ways to inhibit the process under service conditions.

Authors:
;  [1]
  1. SRI, Menlo Park, CA (United States)
Publication Date:
OSTI Identifier:
7228770
Report Number(s):
CONF-900802-
Journal ID: ISSN 0569-3799; CODEN: ACPCA
Resource Type:
Conference
Journal Name:
American Chemical Society, Division of Petroleum Chemistry, Preprints; (United States)
Additional Journal Information:
Journal Volume: 35:3; Conference: 200. American Chemical Society (ACS) national meeting, Washington, DC (United States), 26-31 Aug 1990; Journal ID: ISSN 0569-3799
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ASPHALTS; OXIDATION; ANTIOXIDANTS; BENZYL RADICALS; EXPERIMENTAL DATA; HARDENING; INFRARED SPECTRA; NUCLEAR MAGNETIC RESONANCE; PHENOLS; PHOTOCHEMICAL REACTIONS; RADICALS; SERVICE LIFE; AROMATICS; ARYL RADICALS; BITUMENS; CHEMICAL REACTIONS; DATA; HYDROXY COMPOUNDS; INFORMATION; LIFETIME; MAGNETIC RESONANCE; NUMERICAL DATA; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; RESONANCE; SPECTRA; TAR; 360604* - Materials- Corrosion, Erosion, & Degradation

Citation Formats

Mill, T, and Tse, D. Oxidation and photooxidation of asphalts. United States: N. p., 1990. Web.
Mill, T, & Tse, D. Oxidation and photooxidation of asphalts. United States.
Mill, T, and Tse, D. 1990. "Oxidation and photooxidation of asphalts". United States.
@article{osti_7228770,
title = {Oxidation and photooxidation of asphalts},
author = {Mill, T and Tse, D},
abstractNote = {Oxidation of asphalt is a major cause of pavement failure owing to hardening of the asphalt binder with accompanying changes in viscosity, separation of components, embrittlement and loss of cohesion and adhesion of the asphalt in the mix. However oxidation of asphalt-aggregate mixes at high temperature is deliberately done to partly harden the mix prior to laydown; hardening then continues during cooling. Excessive hardening at this point is undesirable because of embrittlement and cracking. Slow oxidation of asphalt continues during the service life of the roadbed at a rate that appears to be partly determined by the void volume of the roadbed, as well as the properties of the asphalt and (possibly) the properties of the aggregate. The authors focused their efforts on understanding the mechanistic basis for slow oxidation of asphalt under service conditions in order to predict how rapidly an asphalt will oxidize, based on its composition, and to find better ways to inhibit the process under service conditions.},
doi = {},
url = {https://www.osti.gov/biblio/7228770}, journal = {American Chemical Society, Division of Petroleum Chemistry, Preprints; (United States)},
issn = {0569-3799},
number = ,
volume = 35:3,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 1990},
month = {Sun Jul 01 00:00:00 EDT 1990}
}

Conference:
Other availability
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