Experimental studies on bond capacity of grid system for UCCF cables

• Published in: KSCE journal of civil engineering pp. 15 - 19
• Main Authors: Sung Tag Seo, Rudy Djamaluddin
• Format: Journal Article
• Language: Korean
• Published: 대한토목학회 01.01.2006
• Subjects: 토목공학
• ISSN: 1226-7988; 1976-3808

UCCF (Unresin Continuous Carbon Fiber) cable is a reinforcing material made of carbon fibers without impregnation into theresin matrix. As tensile reinforcement for concrete structures, the reinforcement must have enough bond capacity to concrete in orderto achieve an effective reinforcing action. The bond capacity of UCCF cables is very low, approximately 1/10 to 1/15 comparing withthat of the steel reinforcement. Although it is difficult to develop full bond action on UCCF cables, it is considered that the partialbond effect on cable is achieved by constructing the grids along the reinforcing cables by connecting the longitudinal cables with thetransversal cables by epoxy. Pullout test indicated that the grids have bond capacity approximately ten times higher than that of thecable itself. For design purposes, a model of the grid system is proposed. By this model, the grid bond capacity of the cross section ofthe grids could be predicted. Comparing to the experimental results of pullout test, the model results showed a good agreement. KCI Citation Count: 0