Behavior of CFRP-confined concrete cylinders with a compressive steel reinforcement |
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Authors: | V Tamuzs V Valdmanis K Gylltoft R Tepfers |
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Institution: | 1.Institute of Polymer Mechanics,University of Latvia,Riga,Latvia;2.Department of Civil and Environmental Engineering,Concrete Structures Chalmers University of Technology,G?teborg,Sweden |
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Abstract: | The paper presents results of an experimental investigations carried out to estimate the cooperation between a steel bar reinforcement
and round concrete cylinders confined by a carbon-epoxy composite, concerning the increase in the concrete compression strength
due the composite wrapping. The steel bar reinforcement with its yield stress considerably increases the bearing capacity
of concrete. This also happens above the unconfined concrete strength of specimens. The onset of reinforcement yielding roughly
coincides with reaching of the unconfined concrete strength at a compressive strain of ≈0.20%, and therefore it does not produce
a change in the tangent modulus of the stress-strain relationships above the limit of linearity.
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 43, No. 3, pp. 293–308, May–June, 2007. |
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Keywords: | confined concrete carbon-epoxy composite steel bar reinforcement strength |
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