An Analytical Investigation On Shear Strength Of High Performance Concrete Beams

Abstract

Although High-Strength Concrete has been increasingly used in the construction industry during the last few years, An increase in the strength of concrete is directly associated with an improvement in most of its properties, in special the durability, but this also produces an increase in its brittleness and smoother crack surfaces which affects significantly the shear strength. Performed experimental work of four beams using two point loading condition to conclude the effect on variation of longitudinal reinforcement ratio. An analytical investigation on Shear Strength of High Performance Concrete (HPC) beams with vertical reinforcement of stirrups was carried out. The analytical investigation was involved in a development of theory based on the truss analogy, as well as capable of predicting the response and shear strength of beams. The analytical study covered a number of parameters including concrete cover to shear reinforcement cage, shear reinforcement ratio, longitudinal tensile steel ratio, overall beam depth, shear span to depth ratio and concrete compressive strength. The theory predicted the shear strength of the beams in present study well. The analytical study verified with previously available experimental result. Apart from this, comparisons of shear strength were also made with the predictions by the shear design provisions considering the Indian Standard IS 456:2000, American Concrete Institute Building Code ACI 318-05, and Euro code EC2 Part I.