Jüt Lif Uzunluğu ve Katkı Oranının Sürdürülebilir Beton Tasarımında Mekanik ve Isı Yalıtım Özelliklerine Etkisi

Abstract

Doğal liflerin çimentolu karışımlarda kullanımı, geri dönüştürülebilirliği, yenilenebilirliği, sürdürülebilir özellikleri ve diğer çevresel faydaları nedeniyle dikkat çekmektedir. Çeşitli doğal lifler arasında, uygun maliyetli, uzun ömürlü ve yenilenebilir bir doğal lif türü olan jüt lifi (JU), sürdürülebilir betonun mukavemetini ve ısı yalıtım özelliklerini iyileştirme yeteneği nedeniyle ilgiyi hak etmektedir. Bu araştırma, farklı lif uzunlarında (3, 4,5 ve 6 cm) ve farklı katkı oranlarında (%0, %0,5, %1 ve %1,5) JU lifinin çimento ağırlığınca sıradan Portland çimentosu (OPC) karışımlarına entegre ederek, mekanik özellikleri ve ısı yalıtım performansı üzerindeki etkisini incelemiştir. Sonuçlar, çimento ağırlığına göre %1 oranında JU lif eklenmesinin, %28,37 eğilme mukavemeti kazanımıyla %21,17’ye kadar yalıtım artışına yol açtığını göstermiştir. Lif uzunluğunun artması ve katkı oranlarının artması ile eğilme mukavemeti ve yalıtkanlık değerlerinde dikkate değer bir artış görünmektedir. Dolayısıyla bu çalışmada, farklı lif uzunlukları ve lif katkı oranlarının, mekanik-yalıtım özellikleri arasındaki ilişkilerin R²=0,98 korelasyon katsayısı ile yüksek doğrulukla tahmin edilebileceği ve güçlü bir istatistiksel ilişki gösterdiği ortaya konulmaktadır. Bu deneysel çalışma, inşaat sektöründe doğal liflerin beton karışımlarına entegrasyonunun etkili bir tasarım yaklaşımı olduğunu ortaya koymakta olup, jüt lifinin sürdürülebilir bir malzeme olarak çimento bazlı malzeme tasarımında önemli bir rol oynama potansiyeline sahip olduğunu göstermektedir.

Keywords

• Jüt lifi
• Basınç dayanımı
• eğilme dayanımı
• ısı yalıtım
• sürdürülebilirlik

Effect of Jute Fiber Length and Content Rate on Mechanical and Thermal Insulation Properties in Sustainable Concrete Design

Abstract

The use of natural fibers in cementitious mixtures is attracting attention due to their recyclability, renewability, sustainable properties and other environmental benefits. Among various natural fibers, jute fiber (JU), a cost-effective, long-lasting and renewable type of natural fiber, deserves attention due to its ability to improve the strength and thermal insulation properties of sustainable concrete. This research investigated the effect of different fiber lengths (3, 4,5 and 6 cm) and different content ratios (0%, 0,5%, 1% and 1,5%) of JU fiber on the mechanical properties and thermal insulation performance of ordinary Portland cement (OPC) mixtures by weight of cement. The results showed that the addition of JU fiber at 1% by weight of cement led to an insulation increase of up to 21,17% with a flexural strength gain of 28,37%. There is a significant increase in flexural strength and insulation values with increasing fiber length and additive ratios. Therefore, this study shows that the relationships between the mechanical-insulation properties of different fiber lengths and fiber additive ratios can be predicted with high accuracy with a correlation coefficient of R²=0,98 and show a strong statistical relationship. This experimental study reveals that the integration of natural fibers into concrete mixes is an effective design approach in the construction industry and shows that jute fiber has the potential to play an important role in cement-based material design as a sustainable material.

Keywords

• Jute fiber
• Compressive strength
• Flexural strength
• Thermal insulation
• Sustainability

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