Esayas, Gebreyouhannes (PhD)Asseged, Tesfaye2020-03-042023-11-112020-03-042023-11-112019-11http://etd.aau.edu.et/handle/12345678/20828Bond between concrete and reinforcement is the major factor for load transfer from the bar to the concrete. The shear flow in reinforced concrete beams depends on the existence of this bond. In this paper shear behavior of a reinforced concrete beam, with different unbonding length, is studied. The effect of loss of bond on the shear capacity and the crack pattern of RC beam has been examined. In order to discover the ultimate shear strength, four reinforced concrete beams with partially unbonded length were tested and simulated with Vector FormWork 4.3 software. The partially unbonded length were the parameter. Results from experiment and software showed that for the increment of unbonding length, the ultimate shear capacity increases and the crack pattern varies. Keywords: Shear behavior, Partial length, Unbonden-USReinforced Concrete BeamLoss of BondShear BehaviorThesis