Creep, Shrinkage, and Anisotropic Damage in Alkali-Aggregate Reaction Swelling Mechanism-Part I: A Constitutive Model

The large number of elementary physical phenomena, such as damage interaction, concrete rheology, moisture dependence, thermal activation, and concrete reactivity, which must be taken into account when modeling the behavior of concrete damaged by alkali aggregate reaction (AAR) makes it a complex process. The elementary physical principles that lead to a visco-elasto-plastic orthotropic damage model formulation, including AAR-induced chemical pressure, are presented in the paper. Modeling the effects of moisture on drying shrinkage and AAR development is also paid particular attention. An anisotropic damage theory framework is developed from the proposed constitutive modeling to realistically model swelling and strong cracking anisotropy observed on affected reinforced beams. A second paper follows this one in which a model parameter calibration procedure and verification of model capability to describe degraded structure mechanical behavior under various loading and environmental conditions is given.

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  • Authors:
    • Grimal, Etienne
    • Sellier, Alain
    • Le Pape, Yann
    • Bourdarot, Eric
  • Publication Date: 2008


  • English

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  • Accession Number: 01103072
  • Record Type: Publication
  • Report/Paper Numbers: 105-M26
  • Files: TRIS
  • Created Date: Jun 23 2008 1:01PM