Kalsine Marn Katkılı Çimentoya Uygun Akışkanlaştırıcının Belirlenmesi

Yıl 2025, Cilt: 15 Sayı: 1, 67 - 78, 30.06.2025

Yasemin Akgün , Murat Usta

https://doi.org/10.54370/ordubtd.1596932

Öz

Kalsine marn (CM) katkılı çimento ile naftalin sülfonat-formaldehit (NSF), vinil kopolimer (VCP) ve polikarboksilat eter (PCE) gibi farklı kökenli üç akışkanlaştırıcı arasındaki uyumluluk araştırması yapılmıştır. Dikkate alınan akışkanlaştıcıların kalsine marn katkılı çimento içeren harçların işlenebilirlikleri ve dayanımları üzerindeki etkileri incelenmiştir. Kalsine marn, piyasada bulunan diğer tamamlayıcı çimentolu malzemelere kıyasla nispeten yeni olması nedeniyle böyle bir araştırmaya ihtiyaç duymaktadır. Çalışmadaki katkılı çimentolar, kalsine marnın klinkere kısmen (%0, %10, %30 ve %50) yerdeğiştirilmesi ile elde edilmişlerdir. Deney karışımlarında kullanılan akışkanlaştırıcılar, karıştırma suyuna %0,8 (düşük), %1,2 (orta) ve %1,5 (yüksek) gibi oranlarda eklenmiştir. Harç numunelerinde yoğunluk, çökme-yayılma, ultrasonik darbe hızı (UPV) ve dayanımları belirlendi. Çalışmada incelenen parametrelere göre, kalsine marn katkılı çimento içeren harçların basınç dayanımları %30 yerdeğiştirme oranına kadar iyileşmiştir. Ayrıca, kalsine marn katkılı çimentolar ile akışkanlaştırıcılar arasındaki optimum uyumun %1,2’ ye kadar kullanım oranına sahip polikarboksilat eter (PCE) akışkanlaştırıcısı olduğu belirlenmiştir.

Anahtar Kelimeler

Kalsine Marn , Katkılı Çimento , Akışkanlaştırıcı , Uyumluluk

Determination of Compatible Plasticizer to Calcined Marl Blended Cement

Öz

Compatibility research between calcined marl (CM) blended cement and three plasticizers with different origins, such as naphthalene sulphonate–formaldehyde (NSF), vinyl copolymer (VCP), and polycarboxylate ether (PCE), was performed. The effects of considered plasticizers on the workabilities and strengths of mortars containing calcined marl blended cements were investigated. Calcined marl needs such research due to it is relatively novel compared to other supplementary cementitious materials available on the market. The blended cements in the study were obtained by partial replacement (0%, 10%, 30% and 50%) of calcined marl to clinker. Plasticizers used in the test mixtures were added in ratios such as 0.8% (low), 1.2% (medium), and 1.5% (high) to the mixing water. Density, slump-spread, ultrasonic pulse velocity (UPV), and strength on mortar samples were determined. According to the parameters examined in the study, the compressive strengths of mortars containing calcined marl blended cement improved up to a 30% replacement ratio. And, the optimum compatibility between plasticizers and blended cements with calcined marl was determined as polycarboxylate ether (PCE) plasticizer with up to 1.2% usage ratio.

Anahtar Kelimeler

Calcined Marl , Blended Cement , Plasticizer , Compatibility

Etik Beyan

There are no ethical issues regarding the publication of this article.

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