Efficiency of Injection Method in Repairing of Normal Strength and Reactive Powder Reinforced Concrete Beams

摘要

The study aims to ensure the possibility of returning the strength of reinforced concrete beams to their original strength as a result of repairing work using epoxy injection method. Four different samples were poured and tested, the main variables in this study are the compressive strength in addition to the longitudinal steel reinforcement ratio and the other parameters are kept constant such as shear reinforcement (?10@100 mm) and the dimension (180 ×250×1200). The test results showed that the ultimate strength of repaired beams approached greatly to the original beams strength. There is also an improvement in the ductility and stiffness of tested beams. Also, there is a decreasing in toughness of repaired beams in comparison with the original beams.