In this study, experimental research was carried out to improve and evaluate the seismic performance of reinforced concrete beam-column joint using carbon fiber sheets in existing reinforced concrete building.
Test result shows that retrofitting specimen(LBCJ-CS1, CS2) designed by the improvement of seismic performance of reinforced concrete beam-column joints load-carrying capacities were increased 1.26~1.35 times in comparison with the standard specimen.