Performance of variously shaped glass-fibre-reinforced polymer bars in concrete columns

Afaq Ahmad, Mohamed Elchalakani, Muhammad Iqbal, Yimou Huang, Guowei Ma

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

An investigation was carried out into the structural performance of concrete columns reinforced with various shapes of glass-fibre-reinforced polymer bars and stainless-steel stirrups under concentric loading at ultimate limit state. Six square-section columns were cast to investigate the effects of different reinforcement types. The results showed failure modes depended on reinforcement material, shape and stirrup spacing. Across all specimens, steel-reinforced columns had higher loading capacity and better ductile performance, followed by L-shape and then round polymer bars. Smaller spiral spacing increased confinement efficiency and ductility and provided sufficient restraint against longitudinal polymer bar buckling. Finite-element models were also calibrated, and the results were in close agreement with experimental measurements. Based on the calibrated models, numerical parameters were studied to understand further the behavior of composite columns reinforced with glass-fibre-reinforced polymer.

Original languageEnglish
Pages (from-to)868-884
Number of pages17
JournalProceedings of the Institution of Civil Engineers: Structures and Buildings
Volume176
Issue number11
Early online date2021
DOIs
Publication statusPublished - Nov 2023

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