| Title |
An Experimental Study Using Full-Scale Members on the Effect of Unbonding on the Flexural Capacity of Beams Reinforced with Carbon Fiber Sheets |
| Authors |
Oh Myoung-Ho ; Kim Do-Kyoon ; Kim Han-Soo |
| Keywords |
Carbon Fiber Sheet(CFS) ; Gap(Defect) ratio ; Flexural Capacity ; Capacity Deterioration Ratio ; |
| Abstract |
The deterioration ratio of flexural capacity in the beams reinforced with carbon fiber sheets due to the gap between concrete surface and sheet is presented through the experimental study using full-scale members. Experiment results show that bond failure occurred in all specimens. The deterioration ratios of flexural capacity in the specimens reinforced on the bottom are 6%, 8% and 11% when the gap ratios are 10%, 20%, and 30%, respectively. Also, the deterioration ratios of flexural capacity in the specimens reinforced on the bottom and the sides are 5%, 8%, 11% and 16% when the gap ratios are 10%, 20%, 30% and 40%, respectively. Considering the fact that the mean values of bond stress obtained from this experiment were 7kg/cm2∼10kg/cm2, the current design bond stress of 6kg/cm2 is regarded to be suitable. |