Investigation of the effect of bagasse ash, hooked steel fibers and glass fibers on the mechanical properties of concrete

Abstract

Abstract In the present work, investigations have been done to study the effect on the mechanical properties of concrete by partial substitution of the binder with bagasse ash and inclusion of hooked steel fibers and glass fibers at optimum bagasse ash replacement in concrete. Bagasse ash concrete samples were cast for M30 grade at replacement percentages of 5, 10, 15, and 20. Hooked steel fibers and glass fibers were included in proportions of 0.50% to 1.25% with increment of 0.25% and 0.5% to 2% with increment of 0.5% respectively. The test results have shown that the mechanical properties improved upto10% BA replacement and thereby started decreasing. The optimum enhancement in flexural, compressive and split tensile strength of 6.50%, 13.09% and 8.13% respectively were determined for BA10 specimen after 28 days. On adding hooked steel fibers, the optimum strength is obtained for BASF-C sample with increase in flexural, compressive and split tensile strength of 8.89%, 18.44% and 18.80% respectively. However, the maximum strength with glass fibers was obtained for BAGF-C with increase in flexural, compressive and split tensile strength of 8.12%, 14.29% and 10.03% respectively. The workability decreased as the proportion of bagasse ash increased in the mix. Therefore, the bagasse ash concrete can be developed with an optimized proportion of 1% steel fibers or 1.5% glass fibers at 10% bagasse ash replacement.