The Result of Partial Replacement of Cement by Using Waste Fly Ash and Natural Sand by Using Waste Marble Dust , Stone Dust on Mechanical Properties of Concrete

The present paper deals with the effect on strength and mechanical properties of cement concrete by using Fly ash (FA), Marble dust (MD) & Stone dust (SD). Concrete has become an indispensable construction material and it is now used in greater quantities than any other material. In the present context durability, strength, economy and stainable development are key issues for development. 25% and 35% of fly ash is used as replacement of cement and 30% and 40% natural sand is replaced by MD and SD in different proportion in concrete. Properties of fresh concrete and hardened concrete are investigated. Concrete prepared by replacing 25% of cement by Fly ash and 30% of sand by marble dust and stone dust showed good results. The 7day & 28 days compressive strength was only about 3 to 4 % lesser than the control concrete.