Influence of steel slag and steel fibers on mechanical properties of normal concrete

Abstract

Cement, water, and both fine and coarse aggregate make up the composite material known as concrete. It is more versatile than the other building materials and has a variety of uses. However, it is brittle in nature and weak in tensile strength. Concrete also has low impact strength and poor energy absorption. Steel slag and steel fibres are added to the concrete to strengthen the weak spots and create a sustainable mix, and green concrete is created. In this study, concrete is mixed with hook-end steel fibres at concentrations of 0.25%, 0.50%, 0.75%, and 1% by volume, and its mechanical properties are assessed and compared with conventional concrete having 20 % replacement with slag. It was observed that adding hooked-end steel fibres to concrete enhanced its mechanical properties. The required number of cubes were cast, and the M40-grade concrete was then put through compressive, split tensile, and shear tests. The mechanical characteristics of concrete that have changed as a result of the addition of steel fibres were then compared.