Effect of asphalt binder oxidation on the modulus of asphalt concrete mixtures

B. Shane Underwood, Cheol Min Baek, Y. Richard Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Oxidative aging of asphalt binder is a well-known phenomenon that has been studied by numerous researchers. Significant breakthroughs have been made in the fundamental understanding of this phenomenon at the asphalt binder level, and practicing engineers now have the tools needed to quantitatively assess the oxidative aging potential of these materials. Conversely, pavement engineers do not have a reliable method to assess the oxidative aging potential of an asphalt mixture because it is unclear exactly how aging in the asphalt binder affects the behaviour of asphalt mixture. Analysis that supports the use of existing models for this purpose is shown in this paper. The study begins with an examination of the effects of oxidative aging on binder and mixture moduli. Then, four existing predictive models that relate these moduli are examined. It is found that all four models do an adequate job of predicting the effect of asphalt binder oxidation on asphalt mixture modulus, but that two of the models, the Witczak models, match the trends observed in mixture experiments the best.

Original languageEnglish (US)
Title of host publicationAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
PublisherTaylor and Francis - Balkema
Pages837-847
Number of pages11
ISBN (Print)9781138027121
DOIs
StatePublished - Jan 1 2014
Event12th International Conference on Asphalt Pavements, ISAP 2014 - Raleigh, NC, United States
Duration: Jun 1 2014Jun 5 2014

Publication series

NameAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
Volume1

Other

Other12th International Conference on Asphalt Pavements, ISAP 2014
CountryUnited States
CityRaleigh, NC
Period6/1/146/5/14

Keywords

  • Asphalt binder
  • Asphalt mixture
  • Dynamic modulus
  • Oxidative aging

ASJC Scopus subject areas

  • Building and Construction
  • Architecture

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  • Cite this

    Underwood, B. S., Baek, C. M., & Kim, Y. R. (2014). Effect of asphalt binder oxidation on the modulus of asphalt concrete mixtures. In Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014 (pp. 837-847). (Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014; Vol. 1). Taylor and Francis - Balkema. https://doi.org/10.1201/b17219-104