Externally post-tensioning steel rods led to a 25~66% increase of load-carrying shear capacity in damaged reinforced concrete beams when compared to a control beam. And the shear strength of a beam with two deviators was larger than that of a beam with one deviator. That shows how important a deviator location is for strengthening effect.

• 이수헌(경북대학교 융복합시스템공학부 조교수, 공학박사) | Lee, Swoo-Heon
• 김보우(경북대학교 융복합시스템공학부, 학사과정) | Kim, Bo-Woo