Prepared by:
G C Mays

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ABSTRACT

This paper reviews a number of research programmes which have been undertaken in collaboration with industry concerning the selection of materials for the repair and strengthening of concrete structures. The research has been primarily concerned with those material properties which affect the structural performance and durability of patch repaired systems and the selection of appropriate adhesives for strengthening using the technique of bonded external reinforcement. The important material characteristics for patch repair systems are identified and, using appropriate test procedures, the properties of a range of generically different materials are presented. Similarly, the properties of adhesives which are relevant to satisfactory structural performance in plate bonding schemes are discussed and the influence of temperature and moisture on these systems is emphasized. Finally, the paper presents the outcome of both analytical and experimental studies concerning the structural integrity of patch repaired column and beam elements, including the effect of repairing the structure whilst still under load.

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https://eprints.kfupm.edu.sa/1797/1/331-...PERFOR.PDF