In this study, experimental research was carried out to study the high strength RC exterior beam-column joints regions, without the shear reinforcement, using high ductile fiber-reinforced mortar. Specimens designed by retrofitting the exterior beam-column joint regions of existing reinforced concrete building showed a stable mode of failure and an increase in shear strength capacity due to the effect of enhancing dispersion of crack control at the time of initial loading and bridging of fiber from retrofitting new high ductile materials during testing.

• 하기주(경일대학교 건축공학과 교수, 사)건설기술정책연구원 원장, 공학박사) | Ha, Gee Joo
• 강현욱(경일대학교 건축공학과 박사과정, 사)건설기술정책연구원 연구원) | Kang, Hyun Wook
• 이동근(사)건설기술정책연구원 연구원) | Lee, Dong Gun Corresponding Author
• 김우석(서울대학교 건축학부 선임연구원, 공학박사) | Kim, Woo Suk