A method was proposed for predicting the lives of reinforced concrete structures which were determined by corrosion of einforcing steel due to chloride. The present method was based on the expressionderived from the various experiments. In order to study the applicability of this prediction methodto real structures, a reinforced concrete structure in ocean environment was investigated which wasconstructed 30 years ago.Concerning cracking of concrete and corrosion of reinforcing steel, the predicted results almost agreed wite the results, of the field investigation. Consequently, proposed method showed validity on life prediction of reinforced concrete structures deteriorated due to chloride.
