Strength Comparison of M20 and M25 Grade Concrete on Replacing Natural Sand with M-Sand and Partially Replacing Cement with Rice Husk Ash

The wide growth of construction industry and construction activity leads to use of quality material is important to gain maximum strength. This study investigates the effect of replacing natural sand with manufactured sand (Msand) and partially replacing cement with rice husk ash (RHA) and making normal mixes of concrete to check and compare the compressive strength, split tensile strength, flexural strength of M20 and M25 grade concrete. M-sand, a byproduct of crushing rocks, has gained attention as a sustainable alternative to natural sand, while rice husk ash, an agricultural waste material, has shown pozzolanic The research aims to evaluate the performance of concrete mixes with varying percentages of Natural sand (100%), M-sand (100%), M-sand and Natural sand (50-50%) and RHA (7.5%, 12.5%, and 17.5%) as partial and fully replacement for natural sand and partially replacement of cement or fly ash based cement with RHA respectively. The various strength of the concrete i.e. compressive strength, split tensile strength and flexural strength was tested at 7 and 28 days of curing, with results indicating the optimal mix ratios for achieving enhanced strength. The result suggests that the replacement of Natural sand with M-Sand and cement with RHA provides a sustainable solution for concrete production without compromising strength and durability. The results also contribute to the understanding of the role of M-sand and RHA in improving quality construction activities in future. Replacement of cement or fly ash based cement with RHA respectively. Nominal mixes prepared to check and compare the strength of concrete after the addition of the RHA in the concrete mix design. Here all the test based casting is done to check out various strength of concrete.