Abstract
Recently, some repaired reinforced concrete (RC) structures were damaged by the aftershocks like the Great East Japan Earthquake 2011, and by the earthquake like Tokachi-Oki Earthquake 2003 after Kushiro-Oki Earthquake 1995. There were RC structures repeated damage and repair due to earthquakes. So, we should study not only repaired RC member's performance but also re-repaired RC member's performance. Based experimental investigations, we clarified the following: the re-repaired RC member's performance i(on) s not directly affected by the repetition of damage and repair, but affected, as repaired RC member's performance, by the damage degree of longitudinal reinforcements before re-repairing, by repair methods, and by repairing materials.
