Behaviour of Self-Curing Concrete with Bethamcherla Stone as Partial Coarse Aggregate Replacement Exposed to MgSO₄ Sulphate Environment

The study investigated the use of Bethamcherla stone as a partial replacement for coarse aggregate in self-curing concrete subjected to magnesium sulphate solution. 1.  The study concluded that replacing 30% of coarse aggregate with bethamcherla stone, combined with 0.12% using polyvinyl alcohol for a self-curing agent resulted in the most effective performance in terms of durability and sulphate resistance. This mix achieved the maximum split tensile and compressive strengths when exposed to a magnesium sulphate environment. 2.      This combination showed notable resistance to MgSO4 sulphate attack, the minimal expansion and damage compared to traditional concrete and other tested mixes. 3.      The enhanced performance was attributed to PVA’s role in improving hydration and minimizing moisture loss during curing, leading to better concrete strength. 4.     The use of bethamcherla stone and PVA not only boosts concrete durability and performance but also provides economic and environmental benefits, such as lower aggregate costs and reduced water usage. Further investigation is recommended to evaluate the long-term effects and practical applications of this mix in various construction scenarios.

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