Finite element modelling of field compaction of hot mix asphalt. Part I: Theory

Eyad Masad, A. Scarpas, Alieh Alipour, Kumbakonam R. Rajagopal, Cor Kasbergen

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

This paper presents the theoretical background for the development of a constitutive model that is used in the simulation of the compaction of asphalt mixtures. The constitutive model is developed to comply with the principles of thermodynamics, and is derived to represent the macroscopic behaviour of an asphalt mixture as a highly compressible viscoelastic material. The paper presents the details of the mathematical formulation and the computational implementation of the model in the finite element package computer-aided pavement analysis 3D. The capabilities of the compaction model and its sensitivity to changes in model's parameters are illustrated using simple numerical applications. In a companion publication, (Masad et al., Finite element modelling of field compaction of hot mix asphalt. Part II: Application, International Journal of Pavement Engineering, Accepted, 2014), the model is verified against field compaction measurements which demonstrate the ability of the model to capture the general trends of the compaction observed in the field.

Original languageBritish English
Pages (from-to)13-23
Number of pages11
JournalInternational Journal of Pavement Engineering
Volume17
Issue number1
DOIs
StatePublished - 2 Jan 2016

Keywords

  • asphalt mixtures
  • compaction
  • constitutive modelling
  • energy based models
  • finite elements

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