Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns

Ali Juma Noorzad; Hakan Dilmaç

Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns

Abstract

The corner radius significantly influences the axial compressive behavior of rectangular reinforced concrete columns externally confined with FRP jackets along their lengths. Fiber reinforced polymer sheets are among the most efficient techniques for enhancing both the strength and ductility of reinforced concrete columns; however, their effectiveness depends on the geometry and edge sharpness. Sharp corners increase stress concentrations and reduce the effective confinement area. This paper analytically investigates the structural behavior of rectangular columns confined with fiber reinforced polymer jackets that experience non-uniform stress distributions at the corners under axial compression. A series of rectangular reinforced concrete columns with varying corner radii were analyzed using reliable analytical models to evaluate the effects on the effective confinement factor, stress-strain response, and axial load capacity. The results reveal that edge sharpness significantly affects the axial compressive behavior of confined rectangular columns. Sections with smaller corner radii behave similarly to unconfined columns and exhibit limited effectiveness from fiber reinforced polymer confinement. Finally, the study concludes that the corner radius is directly proportional to the enhancement of strength and ductility in confined rectangular reinforced concrete columns, playing a critical role in their axial load-carrying capacity.

Keywords

References

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Details

Primary Language

English

Subjects

Materials Engineering (Other)

Journal Section

Research Article

Authors

Ali Juma Noorzad ^*
0009-0005-3353-3000
Afghanistan

Hakan Dilmaç
0000-0003-0346-8875
Türkiye

Publication Date

February 28, 2025

Submission Date

January 10, 2025

Acceptance Date

January 28, 2025

Published in Issue

Year 2025 Volume: 1 Number: 1

IZ

https://izlik.org/JA23YY39LB

Cite

RIS / Bibtex

APA

Noorzad, A. J., & Dilmaç, H. (2025). Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns. Journal of Ceramics and Composites, 1(1), 26-39. https://izlik.org/JA23YY39LB

AMA

1.Noorzad AJ, Dilmaç H. Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns. jcc. 2025;1(1):26-39. https://izlik.org/JA23YY39LB

Chicago

Noorzad, Ali Juma, and Hakan Dilmaç. 2025. “Influence of Corner Radius on the Axial Compressive Behavior of FRP-Confined Rectangular Reinforced Concrete Columns”. Journal of Ceramics and Composites 1 (1): 26-39. https://izlik.org/JA23YY39LB.

EndNote

Noorzad AJ, Dilmaç H (February 1, 2025) Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns. Journal of Ceramics and Composites 1 1 26–39.

IEEE

[1]A. J. Noorzad and H. Dilmaç, “Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns”, jcc, vol. 1, no. 1, pp. 26–39, Feb. 2025, [Online]. Available: https://izlik.org/JA23YY39LB

ISNAD

Noorzad, Ali Juma - Dilmaç, Hakan. “Influence of Corner Radius on the Axial Compressive Behavior of FRP-Confined Rectangular Reinforced Concrete Columns”. Journal of Ceramics and Composites 1/1 (February 1, 2025): 26-39. https://izlik.org/JA23YY39LB.

JAMA

1.Noorzad AJ, Dilmaç H. Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns. jcc. 2025;1:26–39.

MLA

Noorzad, Ali Juma, and Hakan Dilmaç. “Influence of Corner Radius on the Axial Compressive Behavior of FRP-Confined Rectangular Reinforced Concrete Columns”. Journal of Ceramics and Composites, vol. 1, no. 1, Feb. 2025, pp. 26-39, https://izlik.org/JA23YY39LB.

Vancouver

1.Ali Juma Noorzad, Hakan Dilmaç. Influence of corner radius on the axial compressive behavior of FRP-confined rectangular reinforced concrete columns. jcc [Internet]. 2025 Feb. 1;1(1):26-39. Available from: https://izlik.org/JA23YY39LB