Use of Recycle Aggregate and Marble Sludge Powder as a Partial Replacement of Concrete Ingredients

The concrete found to be very durable when mixed with proper ingredients, adjusting water-cement ratio and proper control during mixing stage. The ingredient which constitute in the concrete is normally cement, sand and coarse aggregate in presence of water, but due to continuous demand of these material the scarcity developed in market hence the alternative material for producing the concrete is need of time. The marble sludge powder is waste and readily available which can be used as cement partial replacement. The use of recycle coarse aggregate from demolished structure as a partial replacement of coarse aggregate is an innovative approach to produce concrete without affecting its durable nature but try to enhance the strength of mix by replacing it. In this paper different percentage of recycle coarse aggregate (RCA), marble sludge powder is replaced with coarse aggregate and cement to produce concrete, the replacement percentage ranges from 20%, 30% and 40%. The results of these innovative samples is then compared with conventional concrete of grade M25.