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Performance of Concrete by replacing Coarse Aggregate and Fine Aggregate with Blast Furnace Slag and Crusher Dust

Dhanasri K, Kishore Kumar M

The demand of natural sand in the construction industry has consequently increased resulting in the reduction of sources and an increase in price. In such a situation crusher dust can be an economical alternative to the river sand. The Blast furnace slag is a waste of industrial materials, it is relatively more recent pozzolanic material that has received considerable attention in both research and application. It is a non-metallic product consisting essentially of Silicates and Alumino silicates of calcium's developed simultaneously with iron in a blast furnace and is granulated by quenching the molten material in water or steam, and air. The present Investigation has been undertaken to study the effect of blast furnace slag and crusher dust on the mechanical properties of concrete, when coarse aggregates is replaced by blast furnace slag and crusher dust is replaced with fine aggregate in different percentages i.e. 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100%. The main parameters investigated were cube compressive strength, split tensile strength and flexural strength. The tests were conducted on concrete with ratio 1:1.86:3.77.