Abstract
To develop an efficient anchoring method for CFRP (carbon fiber reinforced polymer/plastic) strands based on RPC (reactive powder concrete) grout, pull-out tests were conducted on CFRP strand specimens anchored using three methods, namely, bundled anchoring, decentralized anchoring and decentralized-merged anchoring. Test results show that the varying anchoring methods have a significant influence on the anchorage behavior. The decentralized and decentralized-merged anchoring methods exhibit an average anchoring efficiency 2.33 times that of the bundled anchoring method. Shear fracture occurs in separated spiral wires with open-angles larger than 5° for decentralized specimens or with arch-camber angle larger than 7° for decentralized-merged specimens. As for the decentralized and decentralized-merged anchoring methods, the proper open-angle and arch-camber angle are 3°-5° and 3°-7°, respectively. Equations for the average bond strength and the critical anchoring length for the three anchoring methods were proposed in this study, and the equations was validated via test results.
| Translated title of the contribution | Experimental study on static performance of bond-type anchorage for CFRP strand |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 167-174 |
| Number of pages | 8 |
| Journal | Jianzhu Jiegou Xuebao/Journal of Building Structures |
| Volume | 39 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jun 2018 |
| Externally published | Yes |
Keywords
- Anchorage
- Anchoring pattern
- Bond strength
- CFRP strand
- Critical bond length
- Pull-out test
- RPC
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction