One of the byproducts produced during the combustion of coal is fly ash. Typically, coal-fired power plant’s chimneys capture fly ash. Cement is made with fly ash, which is also sold in local markets as pozzolanic cement. In order to efficiently use flyash and to establish its water sorptivity, experiments are conducted. To quantify sorptivity based on the movement of water in capillaries, experimental research is conducted on three grades of cement concrete with 10, 20, 30, 40, and 50% substitution of cement by flyash with natural and recycled aggregate. Concretes with increasing percentages of fly ash replacement for cement displayed lower cumulative water absorption values, indicating lesser porosity in the cover zone. Utilizing the waste material and lowering CO2 emissions will improve the environment as a result of the increased percentage of cement replacement.