Pamuk-Sentetik Bileşenli Lif Katkısı ve Genleştirme Ajanı Miktarlarının Otoklavsız Gazbetonun Teknik Özelliklerine Etkileri

Gazbeton ürünlerde otoklavsız üretimin sağlanmasıyla otoklav sistemlerde kullanılan ısı ve basınç üretim enerjisinden kaçınılabilinmiştir. Bu makalede, endüstriyel atık lif katkı materyalinin 5 ayrı kullanım oranıyla hazırlanan otoklavsız gazbeton örneklerde genleştirici ajanın ağırlıkça %0,08, %0,12 ve %0,15 oranlarında ihtiva durumunun matris yapı üzerindeki etkileri detaylı incelenmiştir. Genleştirilerek üretilen ön kürlemeli otoklavsız gazbeton örneklerinde hava sürükleyici ajan olarak %99.9 saflık derecesine sahip, nano boyutta alüminyum tozu tercih edilmiştir. Endüstriyel atık lif niteliğinde değerlendirilen kot kumaş açma elyafı %70 pamuk, %30 sentetik içermektedir. Bu atık lif malzeme maksimum 2 mm olacak şekilde boyutlandırılmıştır. Bu çalışma kapsamında, özellikle harç içerisinde kullanılan ağırlıkça Al ihtiva oranının lif katkılı ya da lif katkısız otoklavsız ön kürlemeli gazbeton örneklerinde yarattığı etkiler incelenmektedir. Deney ve gözlemler ışığında lif kullanım durumu ve miktarlarına uygun olabilecek ağırlıkça Al ihtiva oranları mikroskobik yapısal analiz, birim hacim kütle, genleşme oranı, basınç dayanımı, kütlece su emme, görünür porozite, sismik hız, akustik empedans ve ısıl iletkenlik özellikleri ile endüstriyel bakış açısıyla yorumlanmıştır.

The Effects of Cotton-Synthetic Component Fiber Additive and Expansion Agent Amounts on the Technical Properties of Non-Autoclaved Aerated Concrete

By ensuring non-autoclaved production in aerated concrete products, heat and pressure generation energy used in autoclave systems could be avoided. In this article, the effects of 0.08%, 0.12% and 0.15% by weight of the expansion agent on the matrix structure in non-autoclaved aerated concrete samples prepared with 5 different usage rates of industrial waste fiber additive material were examined in detail. Aluminum powder of nano size with 99.9% purity was preferred as air-entraining agent in pre-cured non-autoclaved aerated concrete samples produced by expanding. Denim fabric opening fiber, which is considered as industrial waste fiber, contains 70% cotton and 30% synthetic. This waste fiber material has been sized to a maximum of 2 mm. In this study, especially the effects of Al content by weight used in mortar on pre-cured aerated concrete samples with or without fiber added, are investigated. In the light of experiments and observations, Al content ratios that can be suitable for fiber usage conditions and quantities were interpreted from an industrial point of view with microscopic structural analysis, unit volume mass, expansion rate, compressive strength, water absorption by mass, apparent porosity, seismic velocity, acoustic impedance and thermal conductivity properties.

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