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Journals / Avrupa Bilim ve Teknoloji Dergisi / 2026 / Sayı: 28 Özel Sayı

Flexural Behavior of Graded Fiber Reinforced Composite Concrete Beams

Kademeli Lif Takviyeli Kompozit Beton Kirişlerin Eğilme Davranışı

Abdullah Müsevitoğlu(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-0293-3424
Atilla Özütok(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-9000-283X
Serkan Salkım(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-0930-687X
Oğuzhan Çağlar(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0003-4486-5076
Gökalp Kırca(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-5475-4815
Kadirhan Ertürk(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-9637-1302
Mesut Acar(KTO KARATAY ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0001-7224-3595
Pages
338–345
Publication Date
2021-11-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result of the study, it is thought that reducing the amount of fiber will contribute positively to the costs of structures where fiber use is common.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, the flexural strengths of graded fiber-reinforced composite beams were investigated.
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Key Findings & Data:Mixtures reinforced with fiber (steel and macro-synthetic polypropylene fiber/MS) at a ratio of 2% to the concrete volume were prepared.
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Conclusion & Impact:As a result of the study, it is thought that reducing the amount of fiber will contribute positively to the costs of structures where fiber use is common.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Fiber takviyeli beton · Makro sentetik polipropilen fiber · çelik fiber

Abstract

In this study, the flexural strengths of graded fiber-reinforced composite beams were investigated. Mixtures reinforced with fiber (steel and macro-synthetic polypropylene fiber/MS) at a ratio of 2% to the concrete volume were prepared. A 4-point bending test was performed on 7 half-scale beams prepared according to the position of the layer (bottom, top and whole). After the tests, load-displacement behavior, energy absorption capacity, crack propagation, and failure mechanism of the specimens were investigated. Compared to the reference beams, the load-carrying capacities increased by 30% in beams with full MS fiber reinforcement and by 27% in beams with steel fiber reinforced concrete in the substrate. After the load-carrying capacity of MS fiber-reinforced beams reaches the maximum, the ability to make displacement under load is higher than the beams containing steel fiber. When the energy absorption capacities are examined, it can be said that the beams with fiber reinforced concrete (FRC) in the bottom layer behave more ductility than the beams in the upper layer. In cases where the FRC layer is at the top of the beam, sudden load losses are observed as early failure is observed in the normal concrete (NC) layer after the maximum load-carrying capacity is reached. As a result of the study, it is thought that reducing the amount of fiber will contribute positively to the costs of structures where fiber use is common.

Özet

Bu çalışmada kademeli lif takviyeli kompozit kirişlerin eğilme dayanımları araştırılmıştır. Beton hacmine oranla %2 oranında lif (çelik ve makro sentetik polipropilen lif/MS) takviyeli karışımlar hazırlanmıştır. Katmanın konumuna (alt, üst ve tamamı) göre farklı özelliklerde hazırlanan 7 adet yarım ölçekli kiriş üzerinde 4 noktalı eğilme testi yapılmıştır. Deneyler sonrası numunelerde yük-deplasman davranışı, enerji yutma kapasitesi, çatlak ilerleyişi ve göçme durumları incelenmiştir. Yük taşıma kapasitelerinde referans kirişlere kıyasla, tamamı MS lif takviyeli olan kirişlerde %30, çelik lif takviyeli betonun alt katmanda olduğu kirişlerde %27 artış görülmüştür. MS lif takviyeli kirişlerde yük taşıma kapasiteleri maksimuma ulaştıktan sonra yük altında deplasman yapabilme kabiliyeti çelik lif içeren kirişlere göre daha fazla çıkmaktadır. Enerji yutma kapasiteleri incelendiğinde lif takviyeli betonun (FRC) alt katmanda olduğu kirişlerin, üst katmanda bulunan kirişlere oranla daha sünek davranış gözlenmiştir. FRC tabakasının kirişin üst kısmında olduğu durumlarda maksimum yük taşıma kapasitesine ulaşıldıktan sonra normal beton (NC) tabakasında erken göçme gözlendiğinden ani yük kayıpları gözlenmiştir. Çalışma sonucunda fiber miktarının azaltılmasının fiber kullanımının yaygın olduğu yapıların maliyetlerine olumlu yönde katkı sağlayacağı düşünülmektedir.

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Cite This Article

Müsevitoğlu, A., Özütok, A., Salkım, S., Çağlar, O., Kırca, G., Ertürk, K., Acar, M. (2021). Flexural Behavior of Graded Fiber Reinforced Composite Concrete Beams. Avrupa Bilim ve Teknoloji Dergisi, Sayı: 28 Özel Sayı, 338–345. https://doi.org/10.31590/ejosat.999026

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