The document summarizes research that studied the strength properties of steel fibre and glass fibre composites in concrete. Specifically, it investigated the effect of adding different volumes of steel fibre (0.5-1%) and weights of glass fibre (0.15-0.25% of cement weight) on the split tensile and flexural strengths of M25 grade concrete. Cylindrical and beam specimens were cast and tested according to appropriate standards. The results showed that adding 0.75% steel fibre and 0.2% glass fibre by weight of cement (S6 mix) increased the split tensile strength of the concrete by 48.61% compared to the plain concrete mix without fibres.