Abstract This article reviews research on various mechanisms of repairing damaged RC beams (Reinforced concrete). Structures in general, are designed depending on the function, structural and environmental conditions and other requirements. All structural members are designed for predefined requirements. Nowadays the majority of the aged civil structures need repairing for improving the strength, integrity, protection of reinforcement from weathering etc. In some cases, it is less expensive for maintaining the infrastructure at appropriate intermissions than to make a re-construction that will need a repair when exposed to harsh conditions for an extensive period. Numerous types of methods and materials are available for repair of aged/damaged structures. This paper deals with the review of various causes of structural distress and different techniques that are assessed for their efficiency both experimentally and analytically for repair and rehabilitation of RC beams.