In this study, experimental research was carried out to evaluate and improve the constructability and structural performance of high strength R/C interior beam-column joints regions, with or without the shear reinforcement, using high ductile fiber-reinforced mortar. Specimens designed by retrofitting the interior beam-column joint regions of existing reinforced concrete building showed a stable mode of failure and an increase in load-carrying 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 건축학부 교수, 사)건설기술정책연구원 원장, 공학박사) | Ha, Gee Joo
• 홍건호(사)건설기술정책연구원 선임연구원, 공학박사) | Hong, Kun Ho Corresponding Author
• 하재훈(사)건설기술정책연구원 선임연구원, 공학석사) | Ha, Jae Hoon
• 하영주(경일대학교 건축학부 박사과정, 코리아 E&C(주) 대표) | Ha, Young Joo