Publication :
Response of concrete columns reinforced with longitudinal and transverse BFRP bars under concentric and eccentric loading

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Date
2020-09-28
Auteurs
ElMessalami, Nouran
Abed, Farid
Direction de publication
Direction de recherche
Titre de la revue
ISSN de la revue
Titre du volume
Éditeur
ScienceDirect
Projets de recherche
Structures organisationnelles
Numéro de revue
Résumé
This study investigates the behaviour of concrete columns reinforced with longitudinal and transverse basalt fiber‐reinforced polymer (BFRP) bars, the most recent of FRP composites. Twelve full‐scale concrete columns reinforced with longitudinal BFRP bars and either steel or BFRP ties were tested under both concentric and eccentric loadings. The investigated parameters included the type and spacing of the transverse reinforcement (BFRP and steel ties) and the load eccentricity‐to‐width ratio (e/h = 0, 22.2%, 44.4%). The test results showed that reducing the spacing of the BFRP ties improved the ductility and confinement efficiency of the BFRP‐ reinforced concrete (BFRP‐RC) columns. However, reducing the ties’ spacing had an insignificant effect on both the load‐carrying capacities of the columns and the contribution of the longitudinal bars to their ultimate capacities. Moreover, BFRP‐RC columns confined with BFRP ties exhibited ultimate capacities, bar strength contribution, and confinement efficiency comparable with their counterpart columns confined with steel ties at the same spacing. This study displayed that the current code provisions of CSA‐S806‐R17 and ACI440.1R‐ 15 for FRP transverse reinforcement can ensure adequate confinement of the concrete core for BFRP‐RC columns.
Description
Revue
Composite structures, Vol. 255 (1), 1-12 (2021)
DOI
10.1016/j.compstruct.2020.113057
URL vers la version publiée
Mots-clés
Columns , Concentric and eccentric , Fiber‐reinforced polymer , BFRP bars , BFRP ties confinement , Confinement
Citation
Type de document
article de recherche