Hypo Sludge and Steel Fiber as Partially Replacement of Cement and Sand in Concrete by Adding Superplasticizer: An Experimental Study

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Abstract: Based on laboratory experiments to identify mechanical parameters including compressive strength, split tensile strength, and flexural strength carried out after 7 days and 28 days of curing, conclusions were drawn. Utilizing pertinent Indian Standards, experiments and concrete mix design were carried out. The findings show that up to a certain point, adding both HS and SF increases the compressive, tensile, and flexural strength of concrete at all curing ages. The ideal ratio of 20% HS, 2% steel fibre, and 800 ml of super plasticizer to give concrete optimal strength and workability as well as an initial and final setting is 20% HS, 2% steel fibre, and concrete. At 7 and 28 days, compressive strength has been obtained 24.78 N/mm2 and 43.72 N/mm2. After seven and twenty-eight days, the split tensile strength is 7.66 N/mm2 and 5.87 N/mm2, respectively, while the flexural strength is 2.94 N/mm2 and 3.85 N/mm2. HS and SF mixed concrete is 6.51 percent less expensive than regular concrete.