Modeling of Cracking of the Concrete Cover Taking into Account the Coupled Diffusion/Mechanical Process

Kseniya Yurkova; Tomasz Krykowski

doi:10.24423/cames.1016

Kseniya Yurkova Department of Mechanics and Bridges, Faculty of Civil Engineering, Silesian University of Technology, Gliwice, Poland http://orcid.org/0000-0002-8012-9466
Tomasz Krykowski Department of Mechanics and Bridges, Faculty of Civil Engineering, Silesian University of Technology, Gliwice, Poland http://orcid.org/0000-0002-7294-1788

DOI: http://dx.doi.org/10.24423/cames.1016

Abstract

This paper presents a mechanical-diffusion one-way coupled corrosion model that allows the analysis of both accelerated and natural reinforcement corrosion. The impact of corrosion products on the concrete cover is exerted using the tensor of the volumetric strain rate dependent on the rate of concentration change of corrosion products or the rate of concentration change of ferrous ions. The approach proposed in the paper enables the analysis of the impact of corrosion products with a complex composition that depends on the intensity and density of the electric current. The model also enables the analysis of cases where the distribution of corrosion products is inhomogeneous around the circumference of the rebar.

Keywords

corrosion, FEM, elastic-plastic, cover cracking,

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