TY - CONF
T1 - Investigation of the bond behavior for the embedded through-section FRP rod shear-strengthening method
AU - Godat, Ahmed
AU - L'Hady, Amar
AU - Chaallal, Omar
AU - Neale, Kenneth W.
N1 - Funding Information:
The financial support of the Natural Sciences and Engineering Research Council of Canada (NSERC), the Fonds Québécois de la Research sur la Nature et les Technologies (FQRNT), and the Ministère des Transports du Québec (MTQ) through operating grants is gratefully acknowledged. The authors thank Sika Canada Inc. (Pointe Claire, Quebec) for their contribution towards the cost of CFRP rods. The efficient collaboration of John Lescelleur (senior technician) and Juan Mauricio Rios (technician) of the École Technologie Supérieure in conducting the tests is also acknowledged.
Funding Information:
The financial support of the Natural Sciences and Engineering Research Council of Canada (NSERC), the Fonds Qu?b?cois de la Research sur la Nature et les Technologies (FQRNT), and the Minist?re des Transports du Qu?bec (MTQ) through operating grants is gratefully acknowledged. The authors thank Sika Canada Inc. (Pointe Claire, Quebec) for their contribution towards the cost of CFRP rods. The efficient collaboration of John Lescelleur (senior technician) and Juan Mauricio Rios (technician) of the ?cole Technologie Sup?rieure in conducting the tests is also acknowledged.
Publisher Copyright:
© APFIS 2012.All rights reserved.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The embedded through-section (ETS) method is a new shear strengthening technique recently developed to avoid the debonding failure that occurs with other FRP strengthening techniques such as those using externally bonded (EB) and near-surface-mounted (NSM) FRPs. The technique offers greater confinement and leads therefore to a substantial improvement in bond performance. In this study, experimental results from 13 direct-shear test specimens are reported. The influence of the following major parameters on the bond behavior of FRP-strengthened reinforced concrete beams is examined: concrete strength, quantity of epoxy adhesive, bar diameter, bar surface type, and bar bond length. The impact of these parameters is summarized in terms of the failure mode, ultimate bond force and bond force-slip relationships. The experimental results show that debonding can be avoided by providing a sufficient bar length and concrete strength. As a result, designers will be able to avoid debonding failures and to develop the full capacity of shear-strengthened beams.
AB - The embedded through-section (ETS) method is a new shear strengthening technique recently developed to avoid the debonding failure that occurs with other FRP strengthening techniques such as those using externally bonded (EB) and near-surface-mounted (NSM) FRPs. The technique offers greater confinement and leads therefore to a substantial improvement in bond performance. In this study, experimental results from 13 direct-shear test specimens are reported. The influence of the following major parameters on the bond behavior of FRP-strengthened reinforced concrete beams is examined: concrete strength, quantity of epoxy adhesive, bar diameter, bar surface type, and bar bond length. The impact of these parameters is summarized in terms of the failure mode, ultimate bond force and bond force-slip relationships. The experimental results show that debonding can be avoided by providing a sufficient bar length and concrete strength. As a result, designers will be able to avoid debonding failures and to develop the full capacity of shear-strengthened beams.
KW - Direct shear test
KW - ETS method
KW - Experimental
KW - Parametric study
KW - Shear-strengthening
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M3 - Paper
AN - SCOPUS:85088055705
T2 - 3rd Asia-Pacific Conference on FRP in Structures, APFIS 2012
Y2 - 2 February 2012 through 4 February 2012
ER -