Comprehensive material characterization of asphalt concrete in tension based on a viscoelastoplastic model

The objective of this paper is to develop an advanced material characterization model for asphalt aggregate mixtures. Two prerequisites that are required for developing the model are the decomposition of the strain response into its constituent components and the validation of the time-temperature superposition principle for asphalt concrete with growing damage, both of which are presented. Constitutive models for characterizing the viscoelastic response based on the work potential theory coupled with the correspondence principle and the viscoplastic response based on the strain hardening model are developed separately, and later integrated to form the final model. The model was successful in predicting the strain response for constant crosshead rate tests in tension to the point of localization. For the covering abstract see ITRD E117423.