Improvement Of Heat Conductivity Coefficient Of Fly Ash-Based Geopolymer Brick By Substitution Of Blast Furnace Slag

Year 2023, Volume: 6 Issue: 1, 23 - 33, 25.06.2023

Hussein Jasım Mohammed Al-hasanı Hakan Çağlar Arzu Çağlar

https://doi.org/10.51764/smutgd.1247965

Abstract

Brick, one of the oldest materials known in history, is a building material that has come up to the present day by continuing its development over time. However, with the development of technology, the brick has been continuously revised. Recently, researchers have turned to the production of geopolymer bricks by substituting waste materials into the brick structure.
In this study it is aimed to research the effect of blast furnace slag substitution on the heat conduction coefficient of fly ash-based geopolymer brick. In the study, blast furnace slag was replaced with clay in different proportions (10, 30, 50, and 70%). Furthermore, 20% of the fly ash was kept constant, 8 and 10 M of sodium hydroxide for alkaline activation, and 4% and 8% of calcium hydroxide were used to produce geopolymer bricks.
The heat conductivity coefficient determination experiment was applied to the samples. As a result, it was observed that the heat conductivity coefficient decreased with the increase of blast furnace slag, sodium hydroxide, and calcium hydroxide substitution. The best results were obtained from brick samples produced from 70% blast furnace slag, 10 M sodium hydroxide, and 8% calcium hydroxide with 0.26 W/mK. In addition, it has been concluded that geopolymer brick is an effective way to dispose of industrial waste.

Keywords

Blast furnace slag, fly ash, geopolymer brick, brick, Yüksek fırın cürufu, uçucu kül, geopolimer tuğla, tuğla

Uçucu Kül Bazlı Geopolimer Tuğlanın Yüksek Fırın Cürufu İkamesiyle Isı İletim Katsayısının İyileştirilmesi

Abstract

Tarihin bilinen en eski malzemelerinden olan tuğla, zamanla gelişimini sürdürerek günümüze kadar gelmeyi başaran bir yapı malzemesidir. Teknolojinin gelişmesiyle tuğla sürekli revize edilmiştir. Son zamanlarda araştırmacılar, tuğla bünyesine atık malzemeler ikame ederek geopolimer tuğla üretimine yönelmiştir.
Bu çalışmada, uçucu kül bazlı geopolimer tuğlaya yüksek fırın cürufu ikamesinin ısı iletim katsayısına etkisinin araştırılması amaçlanmıştır. Çalışmada, farklı oranlarda (%10, 30, 50 ve 70) yüksek fırın cürufu kil ile yer değiştirilmiştir. %20 oranında uçucu kül sabit tutulmuş, Alkali aktivasyon için 8 ve 10 M sodyum hidroksit, %4 ve %8 oranında kalsiyum hidroksit kullanılarak geopolimer tuğla üretimi yapılmıştır. Numunelere ısı iletim katsayısı tayini deneyi uygulanmıştır. Sonuç olarak; yüksek fırın cürufu, sodyum hidroksit ve kalsiyum hidroksit ikamesinin artmasıyla ısı iletim katsayısında azalma olduğu görülmüştür. En iyi sonuç, 0,26 W/mK ile %70 oranında yüksek fırın cürufu, 10 M sodyum hidroksit ve %8 kalsiyum hidroksitten üretilen tuğla numunelerinden elde edilmiştir. Bunun yanı sıra geopolimer tuğlanın endüstriyel atıkların bertaraf edilmesi için etkin bir yol olduğu sonucuna varılmıştır.

Keywords

Yüksek fırın cürufu, uçucu kül, geopolimer tuğla, tuğla

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