Shear and Flexural Performance of Reinforced Concrete Beams with Modified Shear Reinforcement: A Literature Review

Shear failure is undesirable to any structural engineer due to its occurrence without warning. Such loss must be avoided in the design of any structure. Consequently, there has been a significant urge to improve and strengthen the behavior of RC beams. Researchers have innovated various approaches, encompassing additives, partial or full replacement of fundamental concrete materials and explorations into size effects. Conversely, changing the con-figurations of the typical stirrups emerges as a new and promising technique for improving the strength of RC beams. This paper reviewed different literature on modifying beams' shear reinforcement in terms of geometry, inclination, and spacing. The literature revealed that RC Beams with spiral and truss reinforcement increased shear capacity by 18.148%, flexural capacity by 13.08%, and reduced deflection by 80mm to 150mm. Due to challenges and gaps, this area of research is still an open field for study. Therefore, to further study this area, it is recommended to use FEM as an alternative to design complex FE models and analyze complicated structural members to obtain safe and accurate results with less cost and time. This paper may contribute to future studies to evaluate the best design demonstrating exemplary performance for RC beams' shear and flexural behavior.