ATIK KARTON KATKILI YENİ NESİL ÇİMENTOLU HARÇ ÜRETİMİNDE CAM LİFİ KULLANIMININ YÜKSEK SICAKLIK ETKİLEŞİM DİRENCİNE ETKİSİ

Yıl 2025, Cilt: 7 Sayı: 1, 1 - 30, 18.07.2025

Şevket Onur Kalkan , Lütfullah Gündüz

Öz

Yangın, insan hayatı ve mühendislik yapıları için önemli bir tehdittir. İnşaat mühendisleri ve mimarlar, tasarım amaçlarından ve yangın güvenliği gerekliliklerinden ödün vermeden, daha güvenli ve sürdürülebilir ürün arayışı içerisinde olmaktadır. Bu sebeple, yapılarda çok yoğun bir şekilde kullanılan beton ve çimentolu diğer ürünlerin yangına karşı direncinin artırılması araştırmacılar tarafından geliştirilen önemli bir konudur. Bu amaçla, bu çalışmada, 3 mm uzunluğunda fiziksel geri dönüşümle elde edilmiş tekstil tipi cam lifi kullanılarak üretilen çimentolu hafif kompozit harçların fiziksel ve mekanik özelliklerinin yanında harçların doğrudan aleve maruz bırakılması sonucu taşıyabildiği en büyük sıcaklıklar ve bu sıcaklıklara karşılık gelen ağırlık kayıpları tespit edilmiştir. Cam liflerin çimentolu kompozit harçların yüksek sıcaklık dayanıklılığı üzerindeki etkisini belirlemek amacıyla atık karton yerine ağırlıkça %0, %0,25, %0,50, %0,75, %1,00, %1,50, %2,00, %3,00, %4,00 ve %6,00 oranlarında cam lifi kullanılarak on farklı kompozit harç karışımı üretilmiştir. Çalışma sonuçlarına göre, lif oranı arttıkça harçların su emme ve görünür gözeneklilikleri azalmış, eğilme dayanımları beklendiği üzere artmıştır. Lif kullanımının artması, aleve maruz kalan yüzeyde oluşabilecek en büyük sıcaklık değerini 902 °C’den 1088 °C’ye kadar çıkarabilmiştir. Bunun yanında, malzemenin yüzey sıcaklığındaki artışa rağmen lif kullanımı ile doğrudan aleve maruziyet sonrası harçların ağırlık kaybı azalmıştır.

Anahtar Kelimeler

Doğrudan alev , yüksek sıcaklık , kompozit harç , cam lif , ağırlık kaybı

Effect of Glass Fiber Use on High Temperature Interaction Resistance in the Production of New Generation Cement Mortar with Waste Cardboard Additive

Öz

Fire is a significant threat to human life and engineering structures. Civil engineers and architects are in search of safer and more sustainable products without compromising design objectives and fire safety requirements. For this reason, increasing the fire resistance of concrete and other cementitious products, which are used intensively in structures, is an important issue developed by researchers. For this purpose, in this study, the physical and mechanical properties of lightweight cementitious composite mortars produced using 3 mm long physically recycled textile type glass fiber, as well as the maximum temperatures that the mortars can withstand when exposed directly to flame and the weight losses corresponding to these temperatures were determined. In order to determine the effect of glass fibers on the high temperature resistance of cementitious composite mortars, ten different composite mortar mixtures were produced by using glass fibers at the rates of 0%, 0.25%, 0.50%, 0.75%, 1.00%, 1.50%, 2.00%, 3.00%, 4.00% and 6.00% by weight instead of waste cardboard. According to the study results, as the fiber ratio increased, the water absorption and apparent porosity of the mortars decreased, and their flexural strength increased as expected. The increase in the use of fibers increased the maximum temperature value that could occur on the surface exposed to flame from 902 °C to 1088 °C. In addition, despite the increase in the surface temperature of the material, the weight loss of the mortars directly after exposure to flame decreased with the use of fibers.

Anahtar Kelimeler

Direct flame , high temperature , composite mortar , glass fiber , weight loss

Kaynakça

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