The waste from construction and demolition works are of large volume and increasing in time. This study was implemented to determine the effect of superplasticizer on the mechanical properties of concrete containing Recycled fine Cement Brick Aggregate (RFCBA). Recycled Fine Cement Brick Aggregate (RFCBA) was produced by crushing such waste cement brick and the particles size of crushed RFCBA was identified. The concrete mixture was formulated by using replacement method where the RFCBA was replaced by percent to the concrete, 0%, 25%, 50%, 75% and 100% without and with 1% superplasticizer with the water cement ratio of 0.5. Two tests were conducted to identify the mechanical properties of concrete names as compressive strength and density. The test results found that the strength properties indicate a good result where 75% replacement of RFCBA with 1% superplasticizer recorded to have the highest strength, higher than control concrete.