Three Dimensional Behaviour of Concrete Cracking Due to Rebar Corrosion

Analytical study on cracking behavior of concrete due to rebar corrosion in the cases of multi-rebar specimens with various rebar spacings, of specimens with locally corroded rebar and specimens with pitting corrosion rebar was carried out. Three-dimensional Rigid-Body-Spring-Method (RBSM) with three phase material corrosion expansion model was applied to simulate crack initiation, internal cracking patterns and crack width propagation. It was confirmed that rebar spacing, ratio of local corrosion length and rebar length and pitting corrosion pattern played important roles in the cracking behavior.