In this study, it was developed eco-friendly geopolymer concrete using ground granulated blast furnace slag and alkali activator(water glass, sodium hydroxides). Also, it was evaluated the flexure capacity of the RC beams using geopolymer concrete. The eco-friendly concrete using geopolymer encouraged alkali activation reaction has rapid hardening speed and showed possibility as a high strength concrete. Also, the RC beams applied this showed similar movement and destroy tendency with RC used previous cement

• 하기주(경일대학교 건축공학과 교수, 사)건설기술정책연구원 원장, 공학박사) | Ha, Gee-Joo
• 하재훈(건설기술정책연구원 선임연구원, 공학박사) | Ha, Jae-Hoon Corresponding Author
• 이동렬(건설기술정책연구원 연구위원, 공학박사) | Yi, Dong Ryul
• 장기창(서울북부고속도로(주) 대표이사, 공학박사) | Jang, Kie-Chang