Sodyum Karbonat ile Aktive Edilmiş Cüruf Esaslı Karışımların Reolojik Özellikleri: Uçucu Kül ve Sıcaklık Etkisi

Öz

Bu çalışmada, yüksek fırın cürufu esaslı sodyum karbonatla aktive edilen karışımların reolojik özellikleri ve tiksotropik davranışları belirlenmiştir. Bu sistemlerde cürufun uçucu kül ile farklı oranlarda ikame edilmesinin ve 10 °C, 25 °C ve 40 °C gibi farklı uygulama sıcaklıklarının karışımın akma gerilmesi, plastik viskozitesi, tiksotropisi gibi reolojik özelliklerine etkisi araştırılmıştır. Çalışma sonucunda, sodyum karbonatla aktive edilen karışımların reolojik özelliklerinin çimento esaslı sistemler ile benzer özellik gösterdiği, uçucu kül ikamesi ile reolojik özelliklerin iyileştiği belirlenmiştir. Ayrıca, farklı uygulama sıcaklıklarının karışımların reolojik özelliklerini değiştirdiği, daha yüksek sıcaklıkta daha düşük akma gerilmesi ve plastik viskozite değerleri elde edildiği belirlenmiştir.

Anahtar Kelimeler

• Reoloji
• tiksotropi
• sodyum karbonat
• cüruf
• uçucu kül

Rheological Properties of Sodium Carbonate Activated Slag-Based Mixes: Effects of Fly Ash and Temperature

Abstract

This study presents the rheological properties and thixotropic behaviour of sodium carbonate-activated slag/fly ash blend systems. The effect of different application temperatures such as 10 °C, 25 °C and 40 °C and the contribution of different FA replacement ratios on the rheological response were explored. Yield stress, plastic viscosity and thixotropy of the mixes are determined. It was found that sodium carbonate activated mixes could have a similar rheological properties with the cement-based systems, enhanced results are obtained with the fly ash substitution. Moreover, different application temperatures affected the rheological properties, higher temperatures caused lower yield stress and plastic viscosity.

Keywords

• Rheology
• thixotropy
• sodium carbonate
• slag
• fly ash

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