Technical journals and books of Designing Concrete mixes have been referred to get an idea to prepare the concrete mix design and planned to implement the idea in those concrete designs. M-30 grade concrete was chosen to process for the study. Generally, concrete structures get demolished due to natural and artificial calamities. Those demolished structures can be recycled to construct a new structure. Thus, it will be a very effective in saving the valuable construction materials otherwise wasted. The concrete with 25% of R.C.A. gives the maximum strength compared to other percentage of Recycled coarse aggregate but less than the concrete with Fresh coarse aggregate. Fresh coarse aggregate can be fully replaced with Recycled coarse aggregate in concrete works such as RC slabs, beams, etc., since the target strength for M-30 grade concrete is achieved. Since the compression strength achieved by M-30 grade concrete with 100% of Recycled coarse aggregate is equal to the compressive strength M-40 grade concrete, it can also be used where the M-40 grade concrete is in use