Abstract
The outer surfaces of deformed Glass Fiber Reinforced Polymer (GFRP) rebars is the main factor affecting the bond behavior between GFRP rebars and concrete. Based on the CSA (Canadian Standards Association) criterion, 30 pull out specimens is used to study the bond behavior of deformed GFRP rebars with 8 different outer surfaces to concrete. The average bond strength of them is compared and the optimal outer surface is fixed at last. The result of this study shows that: (1) the failure mode of all specimens is the shear failure and desquamation of the ribs, no damage is found in concrete; (2) the bond strength of deformed GFRP rebars improves obviously, it is from 7.01 MPa to 12.25 MPa; (3) the optimal spacing of ribs should be less than 2.5 times of the rebar's diameter, and the height of ribs should be more than 3% of the diameter.
| Original language | English |
|---|---|
| Pages (from-to) | 784-787 |
| Number of pages | 4 |
| Journal | Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) |
| Volume | 31 |
| Issue number | 5 |
| State | Published - Oct 2007 |
| Externally published | Yes |
Keywords
- Bond behavior
- Deformed GFRP rebars
- Integral rib
- Optimal surface configuration
- Pull-out test
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