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Abstract

New building materials that required and produced less energy are need of today's infrastructure development. The ability of such building materials to promote sustainable development always puts its demand in active mode. With huge consumption of naturally occurring materials in building construction, the problem related to environment degradation is now common for world. Along with this, world is also facing the problem of reuse, recover and scientifically approved disposal of non-biodegradable wastes. Blast furnace slag (BFS) is one of those steel industry wastes that are abundantly available and their disposal arises as prime challenge for industries. This research work makes an effort to reuse BFS in the form of fine aggregates by replacing it with river sand in cement mortar. A partial to full proportion of river sand was replaced with crushed BFS to form mortar specimens. As per the experimental investigations, a significant change in compressive strength was recorded. The 28th day compressive strength was found 200% more with full replacement of river sand to BFS as compare to reference sample. No significant changes in strength were examined against action of acid and salt. Rapid decrease in strength at elevated temperature was recorded. Results for rebound hammer and UPV were also showed identical concern between actual and predictive strength characteristics. Experimental results were also validated through regression models shows that the models are identically feasible and depicted good relationship between actual and predicted data.

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