Abstract
The failure mechanism and the punching strength of RC slabs damaged by corrosion of reinforcement are not only experimentally but also theoretically studied in order to obtain useful information for repair or maintenance. In the experiments, loading tests are conducted for RC slabs damaged with an accelerated galvanostatic corrosion method. It is found that the reduction in punching strength and the change of failure mechanism occurred in the damaged slabs. The modeling of failure mechanism of the damaged slabs is investigated by experimental and theoretical consideration using elastoplastic finite element analysis. From these consideration, it could be indicated that the punching strength of the damaged slabs is composed of the ultimate shear strength in compression zone under the loaded area and the bending strength of the main reinforcement with the bottom covers.
