Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

Yazarlar: Neslihan DOĞAN-SAĞLAMTİMUR, Ahmet BİLGİL

Konular:Çevre Mühendisliği

DOI:10.28948/ngumuh.443221

Anahtar Kelimeler:Waste reuse,Geopolymer,Bottom ash,Pumice,Building material

Özet: During pumice production, fine material that is stayed under the sieve is exposed as waste material. Bottom ash released into the air after burning coal in the industry is a non-deposit waste. In this study, for the aim of waste reuse, these two types of wastes were activated with sodium hydroxide (NaOH), an alkaline activator, and geopolymer building material was produced. In the experimental study, 10%, 15%, 20% and 25% NaOH were added to the filler material which was formed by mixing 50% waste bottom ash+50% pumice waste to produce geopolymer samples. The samples were cured in the oven that was set at 70, 100 and 150°C for 24 hours. Physical and mechanical properties of the samples were then determined. According to the compressive strength values, the optimum result was found to be 16.5 MPa in the sample activated with 20% NaOH cured at 100°C. Compressive strength values were increased (6-9%) in the samples at 28-day as compared to 7-day. Water absorption and porosity values were similar to those of other building materials. Geopolymer building material that is resistant to external influences can be produced from waste-based samples including NaOH activator.

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