Concrete is the most undisputable material being used in infrastructure development throughout the world. The reduction in the cost of concrete production has resulted in an increased need to find new alternative materials. The aim of the study is to minimize the cost of concrete pavement. The alternative material, Used Foundry Sand which is generated by metal casting industry is partially replaced by natural sand. The fine aggregate has been replaced by used foundry sand accordingly in the range of 10%, 20%, 30%, 40% & 50% by weight for M-20 grade concrete. Compressive and flexural strength tests are conducted for 7, 14, 28 days curing period, and compared with the conventional concrete. Maximum compressive and flexural strength are found for 20% replacement of used foundry sand (FA2) with respect to the conventional concrete (A0). The pavement slab thickness and construction cost reduced to 6 cm and 22% respectively in case of concrete FA2.
Contributors: Ahmed B, Hossen M T, Rana M M, & Islam M R
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