The Effect of Different Additives Materials and Different Concrete Strength Levels on the Ductility of Short Beams

Short-spanned beams generally have inadequate flexural capacities to transfer the loads which cause ductility problems due to over exceeded shear forces. In addition to the use of stirrup alternative additive materials which are used for partially or fully replacing the stirrup bars have recently been met focus entirely on increasing the shear capacities of reinforced concrete members. In this study, an experimental study was conducted to investigate the improving of flexural capacity of short-spanned beams at different used concrete strength levels with different admixtures. A total of fourteen experimental reinforced concrete beams were tested under three point flexural strength tests. Failure patterns for each specimen were presented. Loaddisplacement relationships, initial stiffness, ductility ratio and energy dissipation capacities of different designed short-spanned beams were evaluated. As a result, the admixture material, which has a stronger adhesion property, was provided a higher bending capacity and thus a more ductile behaviour was achieved in the short-spanned beams.