Analysis the Strength Reduction Factor in the Shear Strength of Geopolymer Concrete Beams

Abstract

In recent years, the rapidly developing and growing construction sector has brought about an increase in environmental concerns. Therefore, within the framework of sustainable development, researchers intensify their work on the reuse of environmentally friendly materials called geopolymer concrete. As a result of the studies of many researchers, geopolymer concrete which composed of sustainable materials has been proposed instead of traditional concrete. While a substantial amount of researches has focused on the flexural behavior of geopolymer concrete beams, there exists a relatively limited amount of studies concerning the shear behavior of geopolymer concrete beams with stirrup. Design codes use a strength reduction factor that reflects the degree of uncertainty associated with the probability of the design equations. In this study, the strength reduction factor in predicting the shear strength of geopolymer concrete beams with stirrups according to ACI318 was investigated for different coefficients of variation of concrete compressive strength by using the first-order second moment approach.