Experimental Axial Compressive Behavior of Partially Confined Concrete Columns with Combined External and Internal FRP Strips
Abstract
Current researches have demonstrated that the partial confining design by discrete strips is a
promising and economic alternative to the full strengthening technique. In this connection, this study consists to
evolve a new sustainable technique for confining concrete columns under axial compression. The proposed
design technique consists to embed discontinuously hexagonal fibers reinforced polymer (FRP) strips and
wrapped the outer concrete partially using external circular FRP strips. A detailed experimental program was
realized on standard dimension composite-encased concrete cylinders under compressive loading until failure to
evaluate the axial compressive strength and the corresponding failure mode of the reinforced concrete. In
addition, mechanical characterization tests were performed to provide the behavior laws of used raw materials.
The emphasized experimental results namely: stress versus hoop and axial strain curves and the rupture patterns
of all tested samples indicate clearly an improvement on the stiffness, axial stress and strain of the reinforced
concrete columns compared to conventional unconfined ones.
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | Articles |
| Authors | |
| Publication Date | December 31, 2022 |
| Published in Issue | Year 2022 |
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