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MATERIAL COMPOSITE IN REPAIRING OF REINFORCED CONCRETE CORBEL
Abstract
This paper describes an experimental analysis of damaged concrete corbel strengthened by gluing carbon fibre composite fabrics. The purpose of the investigation is to study all changes in behaviour and then their contribution to a better understanding of reinforced concrete corbel. Five reinforced concrete corbels are tested under tree-points bending to failure. Four of them are damaged at different load level up to 80% before strengthening. Test results show that strengthened corbel specimens using glue given an interesting way to significant member performance. The measured load versus strain (with precision strain of electric gauge) in Composite fibre fabrics, steel bar, concrete, is investigated also. In fact, the load versus strain in cross section between column and corbel are plotted. This paper shows that mechanical damage (up to 80%) has few effect on ultimate strength of strengthened reinforced concrete corbel. Carbon fabrics gluing technics could be a convenient and effective method of strengthening of concrete structures in which epoxies and level load steel bar plaid a major role. A theoretical analysis is described the behaviour of bonded reinforced damaged concrete corbel using the damage theory of RC beams.
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