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The present work involves the discrete modelling of corrosion inducedcracking and its influence on the bond between reinforcement and concrete. Alattice approach is used to describe the mechanical interaction of a corrodingreinforcement bar, the surrounding concrete and the interface between steelreinforcement and concrete. The cross-section of the ribbed reinforcement baris taken to be circular, assuming that the interaction of the ribs of thedeformed reinforcement bar and the surrounding concrete is included in acap-plasticity interface model. The expansion of the corrosion product isrepresented by an eigenstrain in the lattice elements forming the interface.The lattice modelling approach is applied to the analysis of corrosion inducedcracking and its influence of the bond strength. The model capabilities areassessed by comparing results of analyses with those from unconfined pull-outtests reported in the literature. Future work will investigate the influence ofthe stiffness of interface elements and the effect of lateral confinement oncorrosion induced cracking.

On a three-dimensional lattice approach for modelling corrosion induced cracking and its influence on bond between reinforcement and concrete