Abstract
This paper presents an experimental and analytical research study aimed at understanding and modeling of debonding failures in fiber reinforced polymer (FRP) strengthened reinforced concrete (RC) beams. The experimental program investigated debonding failure modes and mechanisms in beams strengthened in shear and/or flexure and tested under monotonic loading. A newly developed fracture mechanics based model considers the global energy balance of the system and predicts the FRP debonding failure load by characterizing the dominant mechanisms of energy dissipation during debonding. Validation of the model is performed using experimental data from several independent research studies and a design procedure is outlined.
Original language | English |
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Pages (from-to) | 1897-1909 |
Number of pages | 13 |
Journal | Engineering Fracture Mechanics |
Volume | 76 |
Issue number | 12 |
DOIs | |
Publication status | Published - Aug 2009 |
Externally published | Yes |
Funding
The research work presented in this paper was funded by NSF under the project title “Failure Behavior of FRP Bonded Concrete Affected by Interface Fracture” through the research grant CMS 0010126 to Massachusetts Institute of Technology. The authors thank Dr. Christopher Leung at Hong Kong University of Science and Technology for generously making available the unpublished experimental data of his laboratory. The FRP materials used in the experimental program were donated by Sika Corporation.
Funders | Funder number |
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National Science Foundation | CMS 0010126 |
Keywords
- Beams
- Debonding
- Fracture
- FRP
- Strengthening