Bazalt ve Karbon Lif Takviyeli Betonların Fiziksel ve Mekanik Özelliklerinin Araştırılması

Yıl 2020, Cilt: 10 Sayı: 4, 1039 - 1048, 15.10.2020

Behcet Dündar , Emriye Çınar , Servet Peşin

https://doi.org/10.17714/gumusfenbil.700956

Cited By: 2

Öz

Bu çalışmada farklı lif çeşitleri kullanılarak üretilen betonların fiziksel ve mekanik özellikleri incelenmiştir. Betonların üretiminde su/çimento oranı 0.55 ve çimento miktarı da 300 kg/m3 olarak sabit tutulmuştur. Agrega olarak 0-4 mm tane büyüklüğüne sahip kırma kum ve 4-16 mm boyutlarına sahip kırma taş agregası kullanılmıştır. Lif çeşiti olarak bazalt ve karbon seçilip beton içerisine hacimce %0.5, %1, %1.5 ve %2 oranlarında ilave edilmiştir. Basınç dayanımı ve arşimet tartımları için 100x100x100 mm, eğilme dayanım tayini için 100x100x350 mm, böhme (aşınma) deneyi için 71x71x71 mm boyutlarında beton numuneleri üretilmiştir. Beton numuneleri arşimet, ultrases, böhme (aşınma), eğilme ve basınç deneylerine tabi tutulmuştur. Beton numuneler kalıptan alındıktan sonra 7 ve 28 gün süre ile standart kür havuzunda kür edilmiştir. 7. günü dolduran beton numunelerinin basınç dayanımları ölçülmüştür. 28 günü dolduran numunelerin su emme yüzdesi, porozite ve birim hacim ağırlık, böhme deneyindeki ağırlık kayıpları gibi fiziksel özellikleri belirlenip, eğilme ve basınç dayanımları ölçülmüştür. Lif oranının artmasıyla birlikte su emme ve porozite değerlerinde artış gözlemlenmiştir. Ultrases geçiş hızları incelendiğinde bazalt lifi kullanılan numunelerde karbon lifi kullanılan betonlara oranla daha yüksek olduğu gözlemlenmiştir. Mekanik dayanımlarda ve aşınma dirençlerinde bazalt lifinin karbondan daha fazla direnç gösterdiği gözlemlenmiştir.

Anahtar Kelimeler

Bazalt Lif, Karbon Lif, Lifli Takviyeli Beton

Investigation of Physical and Mechanical Properties of Basalt and Carbon Fiber Reinforced Concrete

Öz

In this study, physical and mechanical properties of concretes produced by using different fiber types were investigated. In the production of concrete, the water / cement ratio was kept as 0.55 and the cement amount was kept constant as 300 kg/m3. As aggregate, 0-4mm crushed sand and 4-16mm crushed stone aggregate were used. Basalt and carbon were selected as fiber type and 0.5%, 1%, 1.5% and 2% by volume were added to the concrete. Concrete samples with dimensions of 100x100x100mm for compressive strength and Archimedes weighing, 100x100x350mm for determination of flexural strength and 71x71x71mm for abrasion test were produced. Concrete samples were subjected to Archimedes, ultrasounds, abrasion, bending and pressure tests. The concrete samples were cured in the standard curing pool for 7 and 28 days after being taken from the mold. The compressive strength of the concretes filled on the 7th day were measured. The physical properties of the samples that were completed after 28 days such as water absorption percentage, porosity and unit volume weight, weight losses in bending test were determined and their flexural and compressive strengths were measured. Water absorption and porosity values increased with increasing fiber ratio. When the ultrasound transition rates were examined, it was observed that the samples using basalt fiber were higher than the concretes using carbon fiber. It has been observed that basalt fiber has more resistance than carbon in mechanical strength and abrasion resistance.

Anahtar Kelimeler

Basalt Fiber, Carbon Fiber, Fiber Reinforced Concrete

Kaynakça

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