Abstract
Prestressed externally bonded FRP systems provide a means of more efficiently utilizing FRP. Quantifying losses associated with prestressing anchorage and long-term behaviour, primarily associated with creep and relaxation, is critical to understanding the behaviour and to the design of such systems. This study describes the experimental assessment of initial losses associated with anchorage and long-term behaviour of a CFRP system that is post-tensioned, mechanically anchored and subsequently bonded to the tension face of reinforced concrete members. Both flexural tests of strengthened beams and tension relaxation tests of the CFRP system are presented. It is shown that the prestress losses of the CFRP post-tension system were mainly due to initial losses while the long-term prestress losses were dominated by CFRP relaxation and occurred primarily in the ten days following the prestressing operation.
Original language | English |
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Title of host publication | Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, CICE 2012 |
Publisher | International Institute for FRP in Construction (IIFC) |
Publication status | Published - 1 Jan 2012 |
Event | 6th International Conference on FRP Composites in Civil Engineering, CICE 2012 - Rome, Italy Duration: 13 Jun 2012 → 15 Jun 2012 |
Conference
Conference | 6th International Conference on FRP Composites in Civil Engineering, CICE 2012 |
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Country/Territory | Italy |
City | Rome |
Period | 13/06/12 → 15/06/12 |
Keywords
- Anchorage
- Creep
- Prestress losses
- Prestressed CFRP
- Relaxation
ASJC Scopus subject areas
- Polymers and Plastics
- Civil and Structural Engineering