Çimento Hamur ve Harç Özelliklerine Öğütülmüş Yüksek Fırın Cürufu ile Sönmüş Kirecin Birlikte Etkisinin Araştırılması

Yıl 2024, , 1257 - 1268, 25.09.2024

Hüseyin Yılmaz Aruntaş , Melih Şahinöz , Mustafa Dayı

https://doi.org/10.2339/politeknik.1268344

Öz

Bu deneysel çalışmada, çimento bazlı hamur ve harç karışımlarına yüksek oranda sönmüş hava kireci (SK) ve öğütülmüş yüksek fırın cürufunun (YFC) birlikte kullanımı ile üretilen numunelerin bazı fiziksel ve mekanik özellikleri araştırılmıştır. SK ve YFC ağırlıkça %10SK+%10YFC, %20SK+%20YFC ve %30SK+%30YFC oranlarında Portland çimentosu ile yer değiştirilerek hamur ve harç karışımları hazırlanmıştır. Üretilen harç karışımlarında işlenebilirlik sabit alınmıştır. Üretilen harç karışımlarından elde edilen fiziksel ve mekanik deney sonuçları kendi aralarında ve kontrol numuneleri ile karşılaştırılmıştır. Hamur numunelerde kıvam suyu, priz süreleri ve hacim genleşmesi deneyleri, harç numunelerde ise birim hacim ağırlık, basınç dayanımı ve eğilmede çekme dayanımı deneyleri yapılmıştır. Deney sonuçları, SK ve YFC’nin çimentoya ikame edilmesinin hamur kıvam suyu miktarını artırdığı, priz başı sürelerini azalttığı ancak priz sonu sürelerini artırdığı, birim hacim ağırlığı ve hacim genleşmesini ise azalttığı tespit edilmiştir. Ayrıca %30’a kadar SK ve YFC’nin birlikte ikame edilmesi, numunelerin 7, 28 ve 90 yaş gün eğilme ve basınç dayanımlarını azaltmıştır.

Anahtar Kelimeler

Yüksek fırın cürufu, kireç, çimento hamuru, çimento harcı, harç özellikleri

Teşekkür

Çalışmada kullanılan çimento ve cürufun kimyasal analizini yapan sırasıyla Ankara Limak Çimento fabrikası ve Oyak Bolu Çimento fabrikası ile Cihan KÖSE’ye, kirecin kimyasal analizini yapan Paksan Kireç firması ile Neval YILDIRIM’a teşekkür ederiz.

The Investigation of Combined Effect of GBFS and Slaked Lime on Cement Paste and Mortar Properties

Öz

In this experimental study, some physical and mechanical properties of the specimens produced by using a high ratio of slaked lime (SL) and ground blast-furnace slag (GBFS) in cement-based paste and mortar mixtures were investigated. Mixtures of pastes and mortars were prepared by replacing SK and GBFS with Portland cement at 10% SL+10% GBFS, 20% SL+20% GBFS, and 30% SL+30% GBFS ratios by weight. The workability of the produced mortar mixtures was kept fixed. The physical and mechanical experimental results obtained from the produced mortar mixtures were compared among themselves and with the control specimens. Consistency water, setting times, and volume expansion experiments were performed on paste specimens, and unit volume weight, compressive strength, and flexural strength experiments were performed on mortar specimens. Obtained experiment results showed that substituting SL and GBFS together with cement increased the amount of paste consistency water, decreased initial setting times, but increased final setting times, and decreased the unit volume weight and volume expansion. In addition, up to 30% replacement of SL and GBFS together reduced the 7, 28, and 90 days flexural and compressive strengths of the specimens.

Anahtar Kelimeler

Blast furnace slag, slaked lime, cement paste, cement mortar, mortar properties

Kaynakça

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