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Influence of externally bonded reinforcement on the crack spacing

Lander Vasseur (UGent) , Stijn Matthys (UGent) and Luc Taerwe (UGent)
(2008) Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008). p.1-6
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Abstract
Typical for the use of Fiber Reinforced Polymer - Externally Bonded Reinforcement (FRP-EBR) for flexural strengthening is the possible occurrence of different types of debonding mechanisms. Especially in the case of intermediate crack debonding, the crack spacing is one of the influencing parameters. In literature it is generally assumed that the crack spacing stays constant over the depth of the beam. Herewith, cracks aris in the tension zone of the beams, are bridged by the internal and external reinforcement, and extend until the neutral axis of the beam. Based on microscopic analysis, a number of smaller cracks have been observed in the concrete cover near the laminate, in stead of one major crack. Hence the assumption of constant crack spacing over the depth of the beam appears questionable. Taking into account this observation may result in more precise debonding modeling.

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Citation

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MLA
Vasseur, Lander, et al. “Influence of Externally Bonded Reinforcement on the Crack Spacing.” Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008), edited by Masoud Motavalli, 2008, pp. 1–6.
APA
Vasseur, L., Matthys, S., & Taerwe, L. (2008). Influence of externally bonded reinforcement on the crack spacing. In M. Motavalli (Ed.), Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008) (pp. 1–6).
Chicago author-date
Vasseur, Lander, Stijn Matthys, and Luc Taerwe. 2008. “Influence of Externally Bonded Reinforcement on the Crack Spacing.” In Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008), edited by Masoud Motavalli, 1–6.
Chicago author-date (all authors)
Vasseur, Lander, Stijn Matthys, and Luc Taerwe. 2008. “Influence of Externally Bonded Reinforcement on the Crack Spacing.” In Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008), ed by. Masoud Motavalli, 1–6.
Vancouver
1.
Vasseur L, Matthys S, Taerwe L. Influence of externally bonded reinforcement on the crack spacing. In: Motavalli M, editor. Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008). 2008. p. 1–6.
IEEE
[1]
L. Vasseur, S. Matthys, and L. Taerwe, “Influence of externally bonded reinforcement on the crack spacing,” in Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008), Zürich, Switzerland, 2008, pp. 1–6.
@inproceedings{682870,
  abstract     = {{Typical for the use of Fiber Reinforced Polymer - Externally Bonded Reinforcement (FRP-EBR) for flexural strengthening is the possible occurrence of different types of debonding mechanisms. Especially in the case of intermediate crack debonding, the crack spacing is one of the influencing parameters. In literature it is generally assumed that the crack spacing stays constant over the depth of the beam. Herewith, cracks aris in the tension zone of the beams, are bridged by the internal and external reinforcement, and extend until the neutral axis of the beam. Based on microscopic analysis, a number of smaller cracks have been observed in the concrete cover near the laminate, in stead of one major crack. Hence the assumption of constant crack spacing over the depth of the beam appears questionable. Taking into account this observation may result in more precise debonding modeling.}},
  author       = {{Vasseur, Lander and Matthys, Stijn and Taerwe, Luc}},
  booktitle    = {{Proceedings of the 4th International Conference on FRP Composites in Civil Engineering (CICE2008)}},
  editor       = {{Motavalli, Masoud}},
  isbn         = {{978-3-905594-50-8}},
  language     = {{eng}},
  location     = {{Zürich, Switzerland}},
  pages        = {{1--6}},
  title        = {{Influence of externally bonded reinforcement on the crack spacing}},
  year         = {{2008}},
}