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Modelling of the Creep Behavior of FRP-Confined Short Concrete Columns Under Compressive Loading

Berthet, J-F. / Ferrier, E. / Hamelin, P. / Chami, G. Al / Thériault, M. / Neale, K. W.

Abstract Creep in concrete is a complex phenomenon in which many physical and chemical parameters are involved. In this material, not only intrinsic properties can affect the creep behaviour but also external effects such as: humidity and applied stress. When concrete is confined with FRP materials the investigation on its creep behaviour becomes more crucial. An experimental program conducted in the laboratory of the civil engineering department of the University of Sherbrooke attempts to clarify ambiguities of the creep performance of CFRP confined columns. Ongoing investigation shows the promising results expected from the application of CFRP wrapping to circular concrete columns. The main parameters under study are the level of sustained load and the confinement ratio. In the L2MS laboratory, Berthet et al. developed an analytical model to evaluate the ultimate capacity and the stress-strain behaviour of the confined concrete as a function of each material parameter. On the basis of the experimental results obtained by Thériault et al. on the creep performance of such cylinders the model is modified in order to take into account the rheological behaviour of concrete confined with CFRP.

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Modelling of the Creep Behavior of FRP-Confined Short Concrete Columns Under Compressive Loading

Berthet, J-F. / Ferrier, E. / Hamelin, P. / Chami, G. Al / Thériault, M. / Neale, K. W.

Abstract Creep in concrete is a complex phenomenon in which many physical and chemical parameters are involved. In this material, not only intrinsic properties can affect the creep behaviour but also external effects such as: humidity and applied stress. When concrete is confined with FRP materials the investigation on its creep behaviour becomes more crucial. An experimental program conducted in the laboratory of the civil engineering department of the University of Sherbrooke attempts to clarify ambiguities of the creep performance of CFRP confined columns. Ongoing investigation shows the promising results expected from the application of CFRP wrapping to circular concrete columns. The main parameters under study are the level of sustained load and the confinement ratio. In the L2MS laboratory, Berthet et al. developed an analytical model to evaluate the ultimate capacity and the stress-strain behaviour of the confined concrete as a function of each material parameter. On the basis of the experimental results obtained by Thériault et al. on the creep performance of such cylinders the model is modified in order to take into account the rheological behaviour of concrete confined with CFRP.

Modelling of the Creep Behavior of FRP-Confined Short Concrete Columns Under Compressive Loading

Berthet, J-F. / Ferrier, E. / Hamelin, P. / Chami, G. Al / Thériault, M. / Neale, K. W.

Abstract Creep in concrete is a complex phenomenon in which many physical and chemical parameters are involved. In this material, not only intrinsic properties can affect the creep behaviour but also external effects such as: humidity and applied stress. When concrete is confined with FRP materials the investigation on its creep behaviour becomes more crucial. An experimental program conducted in the laboratory of the civil engineering department of the University of Sherbrooke attempts to clarify ambiguities of the creep performance of CFRP confined columns. Ongoing investigation shows the promising results expected from the application of CFRP wrapping to circular concrete columns. The main parameters under study are the level of sustained load and the confinement ratio. In the L2MS laboratory, Berthet et al. developed an analytical model to evaluate the ultimate capacity and the stress-strain behaviour of the confined concrete as a function of each material parameter. On the basis of the experimental results obtained by Thériault et al. on the creep performance of such cylinders the model is modified in order to take into account the rheological behaviour of concrete confined with CFRP.

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Title:

Modelling of the Creep Behavior of FRP-Confined Short Concrete Columns Under Compressive Loading

Contributors:

Berthet, J-F. (author) / Ferrier, E. (author) / Hamelin, P. (author) / Chami, G. Al (author) / Thériault, M. (author) / Neale, K. W. (author)

Published in:

Materials and Structures ; 39

Publication date:

2006

ISSN:

DOI:

https://doi.org/10.1617/s11527-005-9028-1

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Concrete Strength , Axial Strain , Concrete Core , Concrete Column , Fibre Reinforce Polymer

Classification:

BKL: 56.45 Baustoffkunde / 51.30 Werkstoffprüfung, Werkstoffuntersuchung

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