The purpose of this research is to develop a joint system for two concrete pipes with reduced wall thickness by a carbon fiber reinforced polymer (CFRP) fabric. As compared to conventional concrete pipe, the concrete pipe with the reduced wall thickness has more flexibility. However, the reduced wall thickness makes the conventional joint system not feasible. As an alternative joint, externally wrapping system with the CFRP fabric was proposed. The two CFRP widths (75mm and 150mm) were accounted for as a variable under joint shear test from ASTM C497M specification. The externally wrapping system showed 81.07% higher shear strength, as compared to the required shear strength by ASTM C497M.

• 이수규(충북대학교 토목공학부 박사후연구원, 공학박사) | Lee, Sugyu
• 홍기남(충북대학교 토목공학부 교수, 공학박사) | Hong, Ki nam Corresponding author
• 아보말리 알리(텍사스 주립대학교 토목공학과 교수, 공학박사) | Abolmaali, Ali