In this study, the usage of cement amount is minimized to reduce CO2 emission and toxic effect to users for concrete mix design. The reduction of cement is achieved using quad-type admixture (GGBS, FA, Cement, Hwangtoh powder)used for concrete mix design. In order to apply the mix performed design to construction usage, material tests such as compressive strength, slump and pH tests are Preliminary experiment results showed that, the quad-type concrete showed feasibility of being used as a healthy and CO2 reducing construction material