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 language | English |
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Pages (from-to) | 648-660 |
Number of pages | 13 |
Journal | Construction and Building Materials |
Volume | 216 |
DOIs | |
Publication status | Published - 20 Aug 2019 |
Externally published | Yes |
Keywords
- Asphalt mixtures
- Hardening-relaxation
- Viscoelasticity
- Viscoplasticity