Thermal Properties of Foam Mortars used Bentonite as Supplementary Cementitious Material

Year 2023, , 193 - 202, 31.12.2023

Yasemin Akgün

https://doi.org/10.54370/ordubtd.1319066

Abstract

The construction sector has an important role in solving of energy shortage and global warming problems. Therefore, innovative studies focused on building materials are among the priority topics. Foam concrete is one of them. However, foam concrete needs to be improved through the components of the final product in terms of efficieny and sustainability. In this study, it has thought that it could be improve the thermal performaces of foam concretes due to blended cement used bentonite with high thermal performance. On the other hand, thanks to the use of blended cements, reduction in CO2 emissions and more economical cement production would be achieved. The aim of the study is to examining physical, mechanical and thermal properties of foam mortars used bentonite as supplementary cementitious material (SCM). For this aim, it is carried out tests on foam mortars produced with blended cements at replacement ratios determined as 0, 5, 10, 15 wt.% of Portland cement. The results were discussed comparatively among produced series. According to the obtained experimental data, the strength and thermal properties of foam mortars could be developed due to blended cements produced with bentonite additive up to 15% replacement ratio.

Keywords

Bentonite, supplementary cementitious material, foam mortar, thermal property

Çimento Katkı Malzemesi olarak Bentonit Kullanılan Köpük Harçların Termal Özellikleri

Abstract

İnşaat sektörü, enerji kısıtlığı ve küresel ısınma problemlerinin çözümünde önemli bir role sahiptir. Bu nedenle, yapı malzemelerine odaklı yenilikçi çalışmalar öncelikli konular arasında yer almaktadır. Köpük beton bunlardan biridir. Ancak, köpük beton verimlilik ve sürdürülebilirlik açısından nihai ürün bileşenleri aracılığıyla iyileştirilmesi gerekmektedir. Bu çalışmada, ısıl performansı yüksek bentonit katkılı çimento kullanılmasının köpük betonların ısıl performanslarının iyileştirebileceği düşünülmüştür. Diğer taraftan, katkılı çimento kullanımı sayesinde CO2 emisyonlarında azalma ve daha ekonomik çimento üretimi sağlanabilecektir. Bu çalışmanın amacı, çimento katkı malzemesi (ÇKM) olarak bentonit kullanılan köpük harçların fiziksel, mekanik ve ısıl özelliklerinin incelenmesidir. Bu amaçla, Portland çimentosunun ağırlıkça 0, 5, 10, 15 olarak belirlenen ikame oranlarında katkılı çimentolarla üretilen köpük harçlar üzerinde testler yapılmıştır. Sonuçlar deney serileri arasında karşılaştırmalı olarak tartışıldı. Elde edilen deneysel verilere göre %15' e kadar bentonit katkısı ile üretilen katkılı çimentolar sayesinde köpük harçların dayanım ve ısıl özellikleri geliştirilebilmektedir.

Keywords

Bentonit, Çimento Katkı Malzemesi, Köpük Harç, Termal Özellik

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