An Experimental Study on Self Curing Concrete with Bethamcherla Stone as Partial Replacement of Coarse Aggregate Under Sulphate Attack of Mgso4 Environment
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Abstract
Traditional concrete curing requires large amounts of water, posing challenges in high-rise construction and water-scare regions. This research explores an alternative using self-curing concrete with polyvinyl alcohol (PVA). It investigates the use of Bethamcherla stone, marble waste found in the region of Bethamcherla, Kurnool district, Andhra Pradesh, as partial replacement of coarse aggregate in various amounts percentages (0%, 10%, 20%, 30%, 40%, 50% by weight of coarse aggregate) and the addition of polyvinyl alcohol at different percentages (0%, 0.03%, 0.06%, 0.12%, 0.24% by weight of cement) are evaluated for their effectiveness in self-curing. The experimental investigation focuses on the acid resistance of concrete in a MgSo4 solution. This research examines the concrete’s resistance to acid by immersing M20 grade specimens in a 5% MgSo4 solution after initial curing period of 28 days, with additional tests conducted at 30,60, and 90 days.