Capillarity of Concrete Incorporating Waste Ceramic Powder

Öz

The durability of a concrete structure is directly related to its permeability. Capillary water absorption is a widely used test method to obtain information about the permeability properties of a concrete structure. This study focused on the relationship between the content of waste ceramic powder as a cement replacement material and the capillary water absorption capacity of concrete mixtures. Following this purpose, portland cement was substituted with waste ceramic powder in four different proportions of 0%, 10%, 20%, and 30%. The capillary water absorption amount of each concrete mixture was measured at the end of each 5, 10, 15, 30, 45 and 60 minutes period. From the test results, it was seen that the capillary water absorption decreased when the cement was replaced up to 10% with waste ceramic powder, while it increased at other replacement ratios of 20% and 30% compared to the control concrete. This is attributed to the fact that waste ceramic powder can exhibit better filling properties when replaced with cement up to 10% level to reduce the capillary pores of the concrete, increase the density and impermeability of the concrete microstructure, and restrict the free movement of water through the concrete.

Anahtar Kelimeler

• Capillary water absorption
• Cement
• Concrete
• Permeability

Atık Seramik Tozu İçeren Betonun Kapilaritesi

Öz

Beton yapıların durabilitesi, permeabilitesiyle (geçirgenlik) doğrudan ilişkilidir. Kapiler su emme deneyi, betonların permeabilitesi hakkında yorum yapmak için yaygın olarak kullanılan bir test yöntemidir. Bu çalışmada, çimento ikame malzemesi olarak kullanılan atık seramik tozu içeriği ile beton karışımlarına ait kapiler su emme kapasitesi arasındaki ilişki ele alınmıştır. Bu amaçla Portland çimentosu %0, %10, %20 ve %30 olmak üzere dört farklı oranda seramik atığı tozu ile ikame edilmiştir. Her bir beton karışımının kapiler su emmesi 5, 10, 15, 30, 45 ve 60 dakikalık zaman periyotlarının sonunda hesaplanmıştır. Test sonuçlarından, kapiler su absorpsiyonunun kontrol beton sonucuna göre %10'a kadar yer değiştirme ile azaldığı, %20 ve %30 olan diğer ikame oranlarında ise arttığı görülmüştür. Bu, atık seramik tozunun, betonun kılcal gözeneklerini azaltmak, beton mikro yapısının yoğunluğunu ve geçirimsizliğini arttırmak ve suyun beton içinde serbest hareketini kısıtlamak için çimento ile %10 seviyesine kadar değiştirildiğinde daha iyi bir dolgu özelliği gösterebileceğine bağlanmaktadır.

Anahtar Kelimeler

• Beton
• Çimento
• Kapiler Su Emme
• Permeabilite
• Seramik atık tozu

Kaynakça

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