Sustainable resources management and development have been at the forefront of an important issue concerning the construction industry for the past several years a study has been carried out to look into the performance of Metakaolin as cement alternative material in concrete. Nowadays availability of natural coarse aggregate is a big constraint, so alternative material called Recycled Coarse Aggregate (RCA) is using in the concrete mix; it has mostly similar properties as Natural Coarse Aggregate (NCA. In this present study, the experimental using RCA is 20%, 40%, 60%, 80%, and 100%, replacement with natural coarse aggregate and constant weight replacement of metakaolin with the weight of the binder. The Finally obtained results to increasing compressive strength as well as tensile strength mix. 20%RCA+10%MK than the percentage of recycled aggregate increasing with decreasing both compressive and tensile strength. The Further study use in RCA in concrete with MK to replacement in a certain limit. find the surface absorption test in minimum for mix M1and M2 with an increasing percentage of RCA with MK than increasing capillary section values