The present experimental investigation focuses on the utilization of Ground Granulated Blast Furnace Slag (GGBS), silica fume, and eggshell powder as partial replacement materials for cement in M25 grade concrete. The main objective of this study was to evaluate the workability, compressive strength, and sustainability performance of concrete containing different replacement percentages. Experimental work was carried out using replacement levels of 50%, 60%, and 70%, where GGBS content varied while silica fume and eggshell powder were maintained at 5% each. Compressive strength tests were conducted at curing periods of 7, 14, and 28 days. The experimental results indicated that compressive strength increased continuously with curing age for all mixes. The 50% replacement mix consisting of 40% GGBS, 5% silica fume, and 5% eggshell powder showed the best performance among replacement mixes with a 28-day compressive strength of 25.91 MPa. Although conventional concrete achieved higher compressive strength, the replacement mixes significantly reduced cement consumption and environmental impact. The study demonstrates that sustainable concrete can be successfully produced using industrial and agricultural waste materials while maintaining satisfactory structural performance.
Hanumant et al. (Thu,) studied this question.
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