Uçucu Küllü Alçı Sıvaların Isıl Özellikleri

Öz

Bu çalışmada, uçucu küllü alçı sıvada, uçucu kül tane çapının, kompozit malzemenin termal performansına etkisi araştırılmıştır. Testlerde kullanılan uçucu kül, Afsın-Elbistan ve Soma Termik Santrallerinden temin edilmiş ve tane çaplarına göre elenmemiş, >75.10-6 m, (45-75).10-6 m ve <45.10-6 m gruplandırılmıştır. Tüm uçucu kül ve alçı karışımında uçucu külün ağırlık yüzdeleri 10, 30, 50, 70 ve %90 olarak alınmıştır. Bağlayıcı olarak saten alçı kullanılmış olup, tane çapı ve uçucu kül miktarına bağlı olarak 20 örnek hazırlanmıştır. Hazırlanan numuneler, yoğunluk, termal iletkenlik ve porozite gibi testlere tabi tutulmuştur. Yapılan testlere göre tane çapı azaldıkça, külün yoğunluğunun %16.12 arttığı ve gözenekli külün yerini dolu taneciklere bıraktığı ve kül renginin açık kahverengiye dönüştüğü gözlenmiştir, Buna ek olarak uçucu kül-alçı karışımında ilave edilen kül oranı %10 dan %90 oranına arttıkça, ısıl iletkenlik değerleri sırasıyla %14.47-24.52 ve %1.25-9.4 küçüldüğü belirlenmiş ve uçucu kül ilavesinin alçı sıvaya yalıtım özelliği kazandırdığı sonucuna varılmıştır.

Anahtar Kelimeler

• Uçucu kül,
• Saten alçı,
• Isı iletim katsayısı,
• Yalıtım sıvası,
• Atık yönetimi,

Thermal Properties of Gypsum Plaster with Fly Ash

Öz

In this study, grain size of fly ash’s, which is used in gypsum plaster, impact on thermal performance of composite material has been investigated. Used in the testing processes, the fly ash is obtained from the Afsın-Elbistan and Soma Thermal Power Plants and divided into the different grain size classes as unsieved, >75.10-6 m, (45-75).10-6 m and <45.10-6 m. For every fly ash and gypsum mixture. The mixing ratio of the fly ash is taken as 10, 30, 50, 70 and 90% in the mixture. Gypsum is used as a binder agent and there are 20 sample available, which are prepared based on the grain diameter and the amount of fly ash. New products have undergone severalto determine their properties, such as density, thermal conductivity and porosity. It was observed from the tests that, as the diameter of the grain reduced, the density of the ash increased by 16.12 per cent, and the porous layer left its place to full-grain ash and became light brown. While the added ash ratio increased by 10-90% in ash mixtures of gypsum, thermal conductivity values were detected to decrease by (14.47-24.52) % and (1.25-9.4) % respectively. In addition, the fly ash has given the plaster an insulation property.

Anahtar Kelimeler

• Fly ash,
• Satin gypsum,
• Thermal conductivity coefficient,
• Insulation plaster,
• Waste management,

Kaynakça

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