Journal
MECHANICS OF COMPOSITE MATERIALS
Volume 43, Issue 3, Pages 191-202Publisher
SPRINGER
DOI: 10.1007/s11029-007-0019-x
Keywords
confined concrete; carbon-epoxy composite; steel bar reinforcement; strength
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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 unconfilled concrete strength of specimens. The onset of reinforcement yielding roughly coincides with reaching of the unconfined concrete strength at a compressive strain of approximate to 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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