Effect of Blast Furnace Slag on Environmentally Friendly Fly Ash Based Geopolymer Bricks

Hussein Jasim Mohammed Al-Hasani; Hakan Çağlar; Arzu Çağlar

doi:10.5281/zenodo.8418240

Authors

Hussein Jasim Mohammed Al-Hasani Kırşehir Ahi Evran University, Institute of Science, Department of Advanced Technologies, Kırşehir, Türkiye https://orcid.org/0000-0003-3936-2845
Hakan Çağlar Kırşehir Ahi Evran University, Faculty of Engineering and Architecture, Department of Civil Engineering, Kırşehir, Türkiye https://orcid.org/0000-0002-1380-8637
Arzu Çağlar Kırşehir Ahi Evran University, Faculty of Engineering and Architecture, Department of Architecture, Kırşehir, Türkiye https://orcid.org/0000-0003-3928-8059

DOI:

https://doi.org/10.5281/zenodo.8418240

Keywords:

Geopolymer brick, blast furnace slag, fly ash, sodium hydroxide, calcium hydroxide

Abstract

In this study, the objective is to produce fly ash based geopolymer bricks by using blast furnace slag, which is the waste of Karabük Iron and Steel Plant, and Seyitömer thermal power plant waste fly ash. Study, it is aimed to produce a geopolymer brick with superior physical and mechanical properties compared to regular bricks and better thermal properties. In accordance with this purpose, geopolymer bricks were produced based on fly ash (20%) and different proportions (10%, 30%, 50% and 70%) of blast furnace slag and 8 - 10 M sodium hydroxide and 4 - 8% calcium hydroxide concentrations. The samples were subjected to unit volume weight, water absorption (by weight), compressive strength and flexural tensile strength tests. SEM images of the samples were also taken for microstructure analysis. As a result of the study, it was determined that with the increase in the ratio of sodium hydroxide and calcium hydroxide, a more amorphous structure was obtained, the amount of water absorption decreased and the compressive strength increased. Furthermore, it was determined that waste can be used in the production of geopolymer bricks, which is a very proper method for waste disposal.

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Effect of Blast Furnace Slag on Environmentally Friendly Fly Ash Based Geopolymer Bricks

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