APPLICATION OF AN INTERFACE DAMAGE MODEL TO STEEL REINFORCED CONCRETE: A STUDY OF THE SIZE EFFECT

Influence of the size of steel reinforcement of a concrete structure on crack initiation at the interface between the steel fibre and the concrete body of the structure is under consideration. Numerical analysis is provided using a quasi-static delamination model for interface rupture based on an energetic approach using a cohesive zone model for providing the interface stress-strain relation. The obtained results confirm expected dependence of the critical load which causes triggering of the interface crack on a structure dimension parameter.

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