Characterization and validation of the nonlinear viscoelastic-viscoplastic with hardening-relaxation constitutive relationship for asphalt mixtures

Masoud K. Darabi, Chien Wei Huang*, Mohammad Bazzaz, Eyad A. Masad, Dallas N. Little

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

This paper presents a systematic and straightforward analysis procedure to extract the material parameters associated with a coupled nonlinear viscoelastic (VE), viscoplastic (VP), and hardening-relaxation (HR) constitutive model for asphalt mixtures. The recoverable and irrecoverable strain are represented by Schapery nonlinear VE model and Perzyna-type VP theory, respectively. A HR model is proposed to consider the relaxation of hardening. Dynamic moduli and repeated creep-recovery tests are used to calibrate the coupled VE-VP-HR model. The model is then validated against independent experimental data. Results show that the VE-VP-HR model has the ability to capture the response of asphalt mixtures subjected to various loading paths.

Original languageEnglish
Pages (from-to)648-660
Number of pages13
JournalConstruction and Building Materials
Volume216
DOIs
Publication statusPublished - 20 Aug 2019
Externally publishedYes

Keywords

  • Asphalt mixtures
  • Hardening-relaxation
  • Viscoelasticity
  • Viscoplasticity

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