Abstract
India's rapid industrialization and urbanization have led to substantial waste generation, posing significant environmental challenges. Among these wastes, the byproducts of metal industries, such as waste foundry sand (WFS), offer potential solutions for sustainable construction. This study investigates the feasibility of using WFS as a partial replacement for fine aggregate in M20 grade concrete. The experimental program involved incorporating WFS at varying percentages (0%, 10%, 20%, 30%, 40%, and 50% by weight) and assessing the impact on the compressive strength of concrete, complemented by the addition of a plasticizer (1% by weight of cement). The results demonstrated that up to 20% replacement of fine aggregate with WFS significantly enhances the compressive strength of concrete, achieving increases of 40.4% and 56.5% for 7 and 28 days of curing, respectively. Beyond 20% replacement, the compressive strength declined. This research highlights the potential for utilizing industrial waste in concrete production, promoting sustainable construction practices by reducing the reliance on natural resources and addressing waste management challenges.
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