Abstract
To establish a protective design for concrete structures, the explosive-resistant performance of concrete plates and the reinforced back surface of concrete plates were experimentally examined. In this study, explosion tests are conducted to examine the failure modes of concrete plates subjected to the contact explosion and the close-in explosion. Fiber sheet or polymer coating is used for the reinforcement of back surface of concrete plate. Generally, fiber sheet has high strength (high elastic modulus) and polymer coating has high braking strain. From test results, it is found that the reinforcement employed for these materials has remarkable effectiveness to reduce the local damage of concrete plates. Moreover, reinforcement of back surface can prevent the scattering of concrete fragment. The effect of reinforcement is formulated as a function of tensional stiffness of materials.
