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The objective of this study is to experimentally investigate the effectiveness of repairs by injecting epoxy resin in reinforced concrete (RC) members which have failed due to loss of bond between reinforcement and concrete.For this purpose, loads are first applied to RC beams having lap splices and RC beams with cutoff of one-half of main tension reinforcing bars, and bond failures are made to occur. Subsequently, epoxy resin is injected in the cracks formed using low pressure and as much time as practicable for injection.As a result, although the behavior modes of members after repairs may be altered, it is ascertained that capacities, deformabilities, and energy absorptions are not less than those with the beams in their original conditions. Accordingly, it may be said that epoxy resin injection is extremely effective as a method of repairing RC members in which bond failure has occurred.

BOND FAILURE OF REINFORCED CONCRETE MEMBERS AND EFFECTIVENESS OF RERAIRS BY EPOXY RESIN INJECTION