İLKER BEKİR TOPÇU, TAYFUN UYGUNOĞLU, İsmail HOCAOĞLU

Yüksek Fırın Cüruf Katkılı Çimento Pastalarının Elektriksel Özdirençlerinin Araştırılması

Bu çalışmada çimento pastalarında yüksek fırın cürufu içeriği ve su/çimento oranının elektriksel öz direnç üzerindeki etkisi araştırılmıştır. Farklı su/çimento oranlarında ve farklı oranda bağlayıcı içeren karışımlar hazırlanmıştır. Karışımlarda çimento yerine ağırlıkça %0, %10, %20, %30 oranlarında yüksek fırın cürufu konulmuştur. Taze haldeki çimento pastalarına kalıp içerisinde elektrik akımı uygulanmış, ölçümler oda sıcaklığında yapılmıştır. Elektrik akımı uygulanmış ve elektrik akımı uygulanmamış numunelerdeki hidratasyon zamanı ile elektriksel öz direnç arasındaki farklar araştırılmıştır. Sonuç olarak, çimento pastalarına yüksek oranda yüksek fırın cürufu konulması ve elektrik akımı uygulanması ile priz süresi kısalmaktadır.

Anahtar Kelimeler:

Beton bileşen, çimento pastası, elektriksel öz direnç, yüksek fırın cürufu

Investigation of Electrical Resistivity of Cement Paste Blended with Blast Furnace Slag

In this study, the effects of blast furnace slag content and water/cement ratio at cement pastes on the electrical resistivity were investigated. Admixtures having different water/cement ratios and admixtures having binder at different dosage levels were prepared. The blast furnace slag was used in the admixtures by replacing the cement in ratio of 0%, 10%, 20% and 30% by weight. Electrical current was applied to the fresh cement pastes in the molds. The measurements were done at room temperature. The differences between electrical resistivity and hydration time with and without electric current application on the specimens were investigated. As a result, adding blast furnace slag at a high proportion and application of electrical current to the cement pastes shorten the setting time.

Keywords:

Concrete structures, cement paste, electrical resistivity, blast furnace slag,

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