Alkali Aktive Edilmiş Uçucu Külün Sinterlenmesi, Karakterizasyonu ve Fiziksel Özelliklerinin İncelenmesi

Year 2021, , 153 - 157, 01.09.2021

Kemal Şahbudak

https://doi.org/10.30797/madencilik.850500

Abstract

Bu çalışmada, Sivas Kangal Termik Santrali’nden edinilmiş uçucu külden yapılan alkali aktivasyon yani jeopolimerleşmenin ardından, farklı sıcaklıklarda sinterlenmesi ile üretilen numunelerin mekanik özellikleri, toz özellikleri, termal özellikleri ve faz özellikleri tartışılmıştır. Mekanik özellikler için basma testi, termal özellikler için geçirgen plaka kaynağı ölçümü, yüzey ve toz özellikleri için taramalı elektron mikroskobu ve faz analizi için X-ışınları difraksiyonu kullanılmıştır. Yapılan çalışmalarda kolay bulunan ve silika kaynağı da olabilen bir alkali olan Na2SiO3 farklı molaritelerde kullanılmış ve özellikleri incelenmiştir. Uçucu külün hem jeopolimer olarak kullanılabilirliği, hem de sinterlenmiş malzemenin yüzey plakası olarak kullanılabilirliğinin olduğu sonucuna varılmıştır. Basma mukavemeti 10 MPa, termal iletkenliği 0.0006 W/m.K, belirlenen fazlar ise kalsiyum silikat, kalsiyum aluminate, amorf silika ve magnezyum alüminat ve sinterleme ürünü olan camsı kyanite yani aluminasilikat fazı görülmüştür.

Keywords

Uçucu Kül, Jeopolimer, Sinterleme, Termal iletkenlik, Mekanik Özellikler

Supporting Institution

yok

Project Number

yok

Investigation of sintering, characterization and physical characteristics of alkali activated fly ash

Abstract

In this study, mechanical properties, powder properties, thermal properties and phase properties of samples produced by sintering at different temperatures after alkali activation by geopolymerization, made from fly ash obtained from Sivas Kangal Thermal Power Plant, are discussed. Compression test for mechanical properties, transient plane source measurement for thermal properties, scanning electron microscopy for surface and powder properties, and X-ray diffraction for phase analysis wasa evaluated. In studies, Na2SiO3, an alkali that can be found easily commercially and a source of silica, was used at different molarities and its properties were investigated. It was concluded that fly ash can be used both as a geopolymer and as a sintered material as a lateral plate as well as brick production. Compressive strength was found to be as 10 MPa, thermal conductivity is 0.0006 W/m.K, and the determined phases are calcium silicate, calcium aluminate, amorphous silica and magnesium aluminate and glassy kyanite which is a sintering product, namely aluminacilicate phase.

Keywords

Fly Ash, Geopolymer, Sintering, Thermal Conductivity, Mechanic Properties

Project Number

yok

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