Yüksek fırın ve Çelikhane cürufu katkılı çimentolarla üretilen harçların sülfat dayanımı

Yüksek Fırın Cürufu ve Çelikhane Cürufu Demir Çelik Fabrikalarında ortaya çıkan atık malzemedir. Bu malzemelerin kullanım alanları sınırlı olmakla birlikte depolanmaları da sorun teşkil etmektedir. Çalışmamızda, Yüksek Fırın Cürufu ve Çelikhane Cürufu Katkılı Portlant Çimentoları üretilmiştir. Öncelikle YFC ve ÇC ayrı ayrı, ikinci olarak YFC ve ÇC birlikte farklı oranlarda karıştırılarak optimum karışım belirlenmeye çalışılmıştır. Son olarak da %70YFC-%30ÇC oranda karıştırılarak üretilen çimentonun farklı inceliklerde öğütülerek inceliğin etkisi araştırılmıştır. Üretilen çimentoların harç numuneleri suda ve sülfat içerisinde kür edilmiş, daha sonra her iki durumdaki harçların basınç dayanımları karşılaştırılmıştır. Yüksek Fırın ve Çelikhane Cürufu katkılı çimentoların, katkısız çimentolara göre sülfat dayanımı daha yüksek çıkmıştır. Her iki cürufun, cüruf karışım oranlarının ve inceliğin sülfat dayanımında farkı görülmemiştir.

Sulfate resistance of mortars produced with granulated blast furnace and steel slag additive cements

Granulated Blast Furnace (GBFS) and Steel Slag (SS) is waste materials that are released from iron and steel works. In addition to that their fields of recycling are limited, their storage are problematic. In this study, Portland cement with GBFS and SS additives were produced. It was also intended to determine the optimum mixture by mixing different ratios of GFBS and SS, first separately, then together. Finally, the cement, which was mixed with a ratio of 70% GBFS – 30% SS, was grinded with different fineness and the effect of fineness on sulfate resistance was investigated. Mortar specimens of the produced cements were cured in water and sulfate, and then compressive strengths of both mortars was compared. As a result, sulfate resistances of cements with GBFS and SS additives were found to be higher than those of the cements with no additives. It was also observed that slag mixture ratios and fineness had no effect on the sulfate resistance.

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