Abstract: The purpose of this study is to utilize the waste in concrete. Brick dust and limestone powder is wasteful material which on dumping not only occupy land but also it has environmental problems which is hazardous to livings. This waste is generated in brick kilns, brick masonry construction sites and during transportation and limestone waste is generated from fine material associated with coarse aggregate production. By reutilizing brick dust and limestone powder the problem could be solved up to some extent. In this investigation, combine brick dust and limestone powder were used in plain concrete to check its fresh and hardened properties. Brick dust and limestone powder was combination for used to check the workability and strength of concrete, using the water-cement ratio of 0.5 which was kept constant during study. Three samples were cast for each concrete mix at age 28 days with 0, 10, 15 and 20% by weight of cement incorporation of brick dust and limestone powder. The all samples test results reveal that added of brick dust and limestone powder shows slightly lower workability than control sample. However, strength results were quite competitive with 15% combination of brick dust and limestone powder shows higher compressive strength. This study shows that incorporation of combination brick dust and limestone powder can be can be effectively used in construction applications.