We know that use, of Concrete is at construction industry is one of important part and comes at first number due to its compressive test, strength and durability. It has capacity to act as a binding material and high capacity to take strength and some other properties. There are many research were going on respective bond of concrete, fatigue, and creep on active level.  Another part is as the times goes the strength of concrete will be reduced and may leads to damage and deteriorate it is one of the drawback of the concrete after we should have the need to repair the concrete to increase a structural strength and make a stiffness property improved which leads to safe structure. Our day by day infrastructure has been developed and have facing some problem for bonding between old to new structure and with composite structure are main issue so we need to repair that and make a proper strength to the corresponding structure. A bond which is good helps the engineer to consider monolithic behavior and it also helps in preventing de-icing salts and water to transmit along the interface. The strength and efficiency of a structure Increases with monolithic behavior of the structure. Main concept is the repair is to be done in such a way that bond will acts a it is originally designed. Making bond strength capable to transfer load and forces such as compression, tension, shear will be properly and safely. In concrete patch repairs application we have seen that the repair material plays a vital importance for concrete on Good Adhesion. For determining the bond strength between material and substrate there are several test. Bond strength under combines shear and compressive stresses, bond strength under shear stresses, under tension stresses respectively are the tests. Combine state of stress that combines compression and shear fall under slant shear tests. . In slant shear test we use a cylindrical or a square prism sample made of two identical parts which are bond at an angle of 30° and under axial compression they are tested. Some experimental work is done in this thesis using concrete steel composite material using epoxy based bonding agent and performing slant shear test and finding out bonding strength and durability of the bond.