Effect of Using FRP Composites as Hybrid in the Strengthening of Concretes

Yıl 2018, Cilt: 22 Sayı: 2, 383 - 391, 01.04.2018

Ali Sarıbıyık

https://doi.org/10.16984/saufenbilder.343562

Cited By: 2

Öz

In this
study, the effect of fiber type, number of layers and hybrid use of different
type fibers on concrete behavior was investigated in standard cylinder
concretes strengthened by Fiber Reinforced Polymer (FRP) composites. Specimens
were produced in average of 30.25 MPa compressive strength with standard
cylinder sizes and were strengthened with unidirectional glass fiber fabric,
unidirectional carbon fiber fabric and hibrit use of glass and carbon fiber
fabrics. Concrete members were tested under axial compressive loads. The effect
of fiber type, number of layers and hybrid use of different type fibers on
concrete behavior was evaluated comparatively. The test results have indicated
that concrete compressive strength and deformation capacities increase when the
number of wrap layers increase. It is also shown that hybrid strengthening is
more effective than individual strengthening.

Anahtar Kelimeler

CFRP, GFRP, hybrid, strengthening, concrete

Betonların Güçlendirilmesinde FRP Kompozitlerin Hibrit Olarak Kullanımının etkisi

Öz

 Bu çalışmada, standart silindir boyutlarda üretilen betonların
Elyaf Takviyeli Polimer (FRP) kompozitler ile güçlendirilmesinde elyaf türü,
sargı katman sayısı ve faklı tür elyafın hibrit olarak kullanımının etkileri
araştırılmıştır.  Aynı şartlar altında
üretilmiş, ortalama 30,25 MPa basınç dayanımına sahip betonlar tek doğrultulu cam
ve karbon elyaf kumaşlarla enine bir, iki, üçer kat sarılarak ve ayrıca cam ve
karbon kumaş hibrit olarak sarılarak güçlendirilmiştir. Beton numuneler eksenel
basınç testi altında sabit hızlı yükleme ile test edilmiştir.  Elyaf türünün, sargı katmanı sayısının ve hibrit
kullanımının beton davranışına etkileri karşılaştırmalı olarak incelenmiştir.
Test sonuçları incelendiğinde, sargı katmanı sayısı arttığında betonun basınç
dayanımı ve deformasyon kabiliyetinin arttığı tespit edilmiştir. Ayrıca hibrit
güçlendirmenin tekil güçlendirmeye göre daha etkili olduğu ortaya konulmuştur.

Anahtar Kelimeler

CFRP, GFRP, hibrit, güçlendirme, beton

Kaynakça

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