Response Of Reinforced Concrete Beams Retrofitted By Ferrocement

Abstract In this paper experimental works is presented to investigate the behavior of reinforced concrete beams retrofitted by ferrocement to increase the strength of beams in both shear and flexure ten reinforced concrete beams are casted in order to study different parameters such as shear reinforcement stirrups different diameters of wire mesh used in rehabilitation two types of rehabilitation are used first strengthening and second repairing the beams are initially stressed to a different prefixed percentage of the ultimate load and finally mechanical method is used to fixed the wire mesh of ferrocement using bolts to eliminate the debonding of ferrocementand trying to reach the full maximum tensile strength of ferrocement. The experimental results indicated that the rehabilitation technique strengthening and repairing of R.C. beams by using ferrocement system is applicable and can increase the ultimate load from 69.8-175 in case of strengthening and from 50.94-125 in case of repairing also the test results for strengthening beams showed that the effect of diameter of ferrocement wire mesh changing from 1.2 to 2.2mm on the ultimate strength of R.C. beams will have an increase relation from 95-175 without steel stirrups and 69.8-126.4 with steel stirrups. Also for repairing beams the results state that the effect of diameter of ferrocement wire mesh changing from 1.2 to 2.2mm on the ultimate strength of R.C. beams will have an increase relation from 67.5-125 without steel stirrups and 50.94-84.9 with steel stirrups.