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

• 구본민(연세대학교, 콘크리트구조연구실, 박사과정) | Koo, Bon Min
• 최승재(연세대학교, 콘크리트구조연구실, 석사과정) | Choi, Seung Jae
• 김장호(연세대학교, 사회환경시스템공학부, 부교수) | Kim, Jang Ho Jay
• 심현보(한국콘크리트학회, 공학연구소, 선임연구원) | Shim, Hyun Bo
• 안태송(한국콘크리트학회, 공학연구소, 소장) | Ahn, Tae Song