Multi-physical and multi-scale deterioration modelling of re-inforced concrete: modelling corrosion-induced concrete damage

Alexander Michel, Michael Lepech, Henrik Stang, Mette Geiker

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    Abstract

    In this paper, corrosion-induced damage is investigated by means of numerical simula-tions utilizing a coupled lattice and finite element method (FEM) modelling approach. While the reinforcement and corrosion product domain are discretized by the FEM, a lattice approach is used for the discretization of the concrete domain. To model the expansive nature of solid corrosion products, a thermal analogy is used. The modelling approach further accounts for the penetration of solid corrosion products into the available pore space of the surrounding cementitious materials and non-uniform distribution of corrosion products along the circumference of the reinforcement. Final-ly, results of numerical simulations in terms of corrosion-induced deformations and cracking are compared to experimental data obtained by digital image correlation and published in the literature.
    Original languageEnglish
    Title of host publicationProceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures
    Publication date2016
    Pages1-12
    Publication statusPublished - 2016
    Event9th International Conference on Fracture Mechanics of Concrete and Concrete Structures - University of California, Berkeley, Berkeley, CA, United States
    Duration: 29 May 20161 Jun 2016
    Conference number: 9

    Conference

    Conference9th International Conference on Fracture Mechanics of Concrete and Concrete Structures
    Number9
    LocationUniversity of California, Berkeley
    Country/TerritoryUnited States
    CityBerkeley, CA
    Period29/05/201601/06/2016

    Keywords

    • Multi-physics
    • Multi-scale
    • Deterioration
    • Lattice
    • FEM
    • Fracture

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