Farklı Alkalilerle Aktifleştirilen Uçucu Kül Esaslı Harçların Bazı Mekanik ve Fiziksel Özelliklerinin İncelenmesi

Yıl 2019, Sayı: 9, 11 - 19, 01.01.2019

Murat Çavuş Melih Naci Ağaoğlu

Öz

Bu çalışmada, Uçucu Kül + Zeolit ve Uçucu Kül + Diatomit mineralleri ile hazırlanan karışımların, sırasıyla Sodyum Hidroksit NaOH , Potasyum Hidroksit KOH ve Sodyum Silikat Na₂SiO₃ alkalileri kullanılarak elde edilen harçların 75 °C’da 24 saat kür ortamında bekletilerek 6 seri deney numunesi hazırlanmıştır. Elde edilen numuneler üzerinde mekanik ve fiziksel deneyler gerçekleştirilmiş ve çıkan sonuçlar karşılaştırmalı olarak incelenmiştir. Tüm karışımlarda bütün bileşenler ve kür şartları sabit tutulmuş yalnızca alkali türü değiştirilmiştir. Numuneler üzerinde 1., 7. ve 28. Günde yapılan basınç dayanımı deneyleri sonucunda en iyi değerin sodyum silikatlı karışımlarda elde edildiği görülmüştür. Genel olarak potasyum hidroksitin bu karışımlar için kayda değer bir etkisinin olmadığı görülmüştür.

Anahtar Kelimeler

Uçucu kül, Zeolit, Diatomit, Alkali aktivasyon

Investigation of Some Mechanical and Physical Properties of Different Alkalines Activated Fly Ash Based Mortars

Öz

In this study, the mixtures were prepared with fly ash + zeolite and fly ash + diatomite minerals. Mortars are obtained by using sodium hydroxide NaOH , potassium hydroxide KOH and sodium silicate Na₂SiO₃ alkalis respectively. 6 series test specimens were prepared by holding the obtained mortars at 75°C for 24 hours. Mechanical and physical experiments were performed on the obtained samples and the results were examined comparatively. All components and all curing conditions were kept constant and only the alkali type was changed in all mixtures. As a result of the compressive strength tests performed on the 1st, 7th and 28th days on specimens, the best value was obtained in sodium silicate mixtures. In general, potassium hydroxide has no significant effect for these mixtures.

Anahtar Kelimeler

Fly ash, Zeolite, Diatomite, Alkaline activation

Kaynakça

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