Abstract
In order to establish a practical design concept of the multilayered resin materials for repair of deteriorated concrete structures, it is important to evaluate the mechanical behaviors of interface among layers and concrete surface during various stages under service conditions as well as providing adequate chemically and physically stable bonding between them. The aim of this particular research is not only to develop a few indexes which represent their mechanical behaviors based on 2-D FEM analysis which considered the linear elastic fracture mechanics, but also to demonstrate the feasibility of applying the proposed indexes to optimum design of multilayered resin materials for repair of deteriorated concrete structures.