It is the analysis of strength on Recycled Aggregate Concrete (RAC) when it is compared with the Natural Aggregate on account of its properties. We are discussing the use of Recycled Aggregate Concrete in the concrete and the effect on its strength by progressively replacing the Natural Aggregate (NA) with Recycled Aggregate. Cubes having dimensions 150x150x150 mm3 were cast using Recycled Aggregate by replacing the Natural Aggregate by 0%, 25%, 50% & 75% and corresponding results of compressive strengths and tensile strength is being noted. The values of compressive strength and tensile strength is being noted by crushing the cube and cylinder after curing at 7, 14, and 28 days respectively with a water-cement ratio of 0.5 and ratio mix of M20. It has been found that the strength of concrete by replacing Natural Aggregate with Recycled Aggregate is quite similar to conventional concrete with 0% and 25% but with 50% and 75% replacement, the strength of resulting concrete has been decreased.

Keywords : RAC, Compressive Strength, Tensile Strength, Recycled Concrete, Natural Aggregate, Cement.