A residual flexural tensile strength and flexural toughness of medium strength of steel fibre self-compacting concrete

Abstract

The addition of steel fibre in concrete altered its properties from brittle to ductile. While, using self-compacting concrete avoids use vibrating tools as it can consolidate under its own weight and high workable concrete that can flow easily in reinforced structure. The aim for this paper is to study the effect of addition of steel fibre in concrete on the flexural tensile strength and flexural toughness of concrete. Four design mixes of steel fibre self-compacting concrete (SFSCC) with different steel fibres contents, which are 0.5%, 0.75%,1.0% and 1.25% were designed, apart from normal SCC acting as a control mix. Slump flow test was conducted to find the workability of fresh concrete mixture. Result shows that there is negative influence on the workability of SFSCC with steel fibre content more than 1%. The highest residual strength and toughness of SFSCC is achieved by SFSCC with 0.75% steel fibre content mix which is 5.44 MPa and 34.2 Joules respectively.