A continuum damage model for asphalt cement and asphalt mastic fatigue

B. Shane Underwood

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

An analytical model is developed for the mechanical degradation of asphalt cement and mastic under repeated loading. The model is derived by applying the strain decomposition principle to consider linear viscoelastic, nonlinear viscoelastic, and damage mechanisms. The experimental processes to isolate the behaviors and the analytical functions used to model each are described. It is found that the Schapery type damage approach is capable of modeling the fatigue process of these materials once appropriate consideration is taken for their nonlinear viscoelastic responses. Fatigue in asphalt mastics is also found to occur due to physical damage occurring in the asphalt cement.

Original languageEnglish (US)
Pages (from-to)387-401
Number of pages15
JournalInternational Journal of Fatigue
Volume82
DOIs
StatePublished - Jan 2016

Keywords

  • Asphalt cement
  • Asphalt mastic
  • Continuum damage
  • Fatigue
  • Nonlinear viscoelastic

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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