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Title: Assessing the structural behavior of reinforced concrete beams produced with macro synthetic fiber reinforced self-compacting concrete
Authors: Ünal, Alptuğ
Uğur, Ahmet Emin
Keywords: Polypropylene fibers
Self-compacting concrete
With and without stirrup
Shear and bending strength
Experimental study
Finite-element analysis
Effective-Depth Ratio
Flexural Behavior
Lightweight Concrete
Shear Behavior
Issue Date: 2022
Publisher: Elsevier Science Inc
Abstract: This study was carried out to investigate the effect of polypropylene-based structural macro synthetic fiber (PPF) reinforcement on the behavior of reinforced concrete beams produced with self-compacting concrete (SCC). For this purpose, it was aimed to spread the PPFs homogeneously in the concrete by making use of the fluid form of SCC. The variation of non-fibrous-low-medium-high PPF ratios and stirrup ratios in specimens produced with SCC are the variables of the study. In this study, the shear span/effective depth ratio (a/d) was taken as the limit value of 2.5 in terms of shear and bending, and the behavior of reinforced concrete beams at this critical value was investigated. Within the scope of the study, 16 large-scale specimens were tested under monotonic loads in a 4-point bending setup. Load-displacement, stiffness and energy consumption graphs of the tested specimens were drawn, ductility values were determined, crack distributions were examined and failure modes were determined. The graphs and the determined values were interpreted in detail. In addition, numerical models of the tested specimens were created and analyzed using a finite element program. Experimental study results were compatible with numerical analysis results and similar results were obtained. According to the results obtained, it was observed that the specimens produced with SCC and using PPF reinforcements at appropriate ratios (5 kg/ m3 and 10 kg/m3) exhibited bending failure even if stirrups were not used.
ISSN: 2352-0124
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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