Unbonded PCaPC structure has the potential advantage of being able to repair or replace damaged parts or members. Therefore, in this study, previous experiment specimens were repaired and structural performances of the specimens before and after repair were experimentally investigated. From the experiments, there was no significant difference in the structural performance between those specimens, and almost all structural capacity was restored by the repairing methods conducted in this study. The maximum strength evaluation method was also proposed based on a macro model, and the calculations showed reasonable agreement with the experiments.
