Modeling the effects of constituent properties on the mechanical behavior of asphalt mixtures

Francisco Thiago, Sacramento Aragão, Yong Rak Kim

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

1 Scopus citations

Abstract

This study evaluates the influence of constituent properties on the mechanical behavior of asphalt mixtures. A computational microstructure model is used to simulate the overall behavior of the mixtures based on individual constituent properties. The heterogeneous mixtures are composed of linear elastic coarse aggregate particles that are embedded into a viscoelastic fine- Aggregate asphalt matrix phase. To properly model the mechanical behavior of the composite, other complex mixture characteristics, such as geometrical properties of the aggregate particles and rate-dependent fracture characteristics of the fine aggregate asphalt matrix are taken into account in the model. Simulations are performed to demonstrate the ability of the model to identify the influence of mix constituents and design factors such as stiffness, volume fraction, and fracture characteristics on the overall mechanical behavior of the mixtures. Even if extra work is required to refine the model, the results demonstrate that carefully-developed computational microstructure models, such as the one presented herein, represent a promising strategy to model the complex behavior of asphalt mixtures in a scientifically-sound and efficient manner.

Original languageEnglish (US)
Title of host publicationAsphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014
PublisherTaylor and Francis - Balkema
Pages1365-1374
Number of pages10
ISBN (Print)9781138027138
StatePublished - 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
Volume2

Other

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

Keywords

  • Asphalt mixtures
  • Finite element method
  • Mechanical behavior
  • Microstructural modeling
  • Mixture constituents

ASJC Scopus subject areas

  • Building and Construction
  • Architecture

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  • Cite this

    Thiago, F., Aragão, S., & Kim, Y. R. (2014). Modeling the effects of constituent properties on the mechanical behavior of asphalt mixtures. In Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014 (pp. 1365-1374). (Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014; Vol. 2). Taylor and Francis - Balkema.