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Study on Cementitious Properties of Steel Slag by Partial Replacement of Cement

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Document pages: 7 pages

Abstract: Steel slag is the byproduct of the basic oxygen furnace and its disposal is cited as the biggest problem. Steel slag of Bokaro steel plant is characterized using X-ray diffraction analysis, X-ray fluorescence, electron microscope. The composition of the steel slag has the great influence on its cementitious properties. Mortar blocks are prepared with the replacement of cement by 5, 10, 15 and 20 of steel slag. Cementitious properties of steel slag are checked by normal consistency, initial and final setting time, soundness, compressive strength. Silica modulus suggests that steel slag has significantly less amount of calcium silicate in its composition. The study reveals that fine steel slag can be utilized for cement replacement up to 10 does not show any adverse effect of the early as well as latter strength. Beyond 10 cement replacement would affect the compressive strength achieved after 90 days of curing. The study would help policymakers to adopt steel slag as a resource for partial replacement of cement.

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