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Abstract

This article presents the results of experimental studies on concrete cylinders confined with CFRP composites. Thirty small-scale specimens (150 × 300 mm²) were subjected to uniaxial compression up to failure and their stress—strain behaviors were studied. Various parameters such as wrap thickness and fiber orientation were considered. Different wrap thicknesses (1, 2, 3, and 4 layers), fiber orientation of 0°, 90°, ±45°, and their combinations were investigated. The results demonstrated significant enhancement in the compressive strength, stiffness, and ductility of the CFRP-confined concrete cylinders as compared to plain cases. An analytical model for ultimate stress and strain of confined concrete has been proposed.

Keywords

CFRP fiber orientation experiment ductility confinement strengthening concrete column.

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References

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Effect of Fiber Orientation on Compressive Behavior of CFRP-confined Concrete Columns

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