Abstract
In maintenance of RC structures, the deterioration level is judged by visual inspection based on maintenance manual. And after then, detail inspection is carried out in order to determine whether repair or reinforcing is needed. Decision making of repair and reinforcing is carried out by administration maintenance manual based on the criterion of JSCE, JCI and soon.
This study is to seek the boundary values of repair and reinforcing using the survey data in situ by considering the records of past decision making of repair and reinforcing on thermal power plant's RC structures. Crack width and area of peeling off are chosen as parameters of chloride induced damage. Allowable boundary values on repair are obtained by inverse analysis based on reliability theory.
