POLYESTER LİF UZUNLUĞU VE KATKI ORANININ BETONUN MEKANİK VE ISI YALITIM ÖZELLİKLERİNE ETKİSİ

Öz

İnşaat mühendisliği yapı malzemelerinde üstün yalıtım ve performans özellikleri sağlamak için, tekstil sektöründe özellikle 2000'li yıllardan itibaren en çok kullanılan ve tüketilen sentetik lif olarak tanımlanan polyester (PES) lifi çok önemli bir hammadde kaynağı olarak öne çıkmaktadır. Bu sebeple, bu çalışma, farklı PES lif uzunlukları (3, 4.5 ve 6 cm) ve farklı lif katkı oranlarında tasarlanan PES lif katkılı betonlarda basınç, eğilme dayanımı ve ısı yalıtımı özellikleri arasındaki ilişkilere odaklanmıştır. Bu amaçla çimento ağırlığınca göre %0, %0,5, %1 ve %1.5 PES lifi içeren rastgele dağıtılmış lif katkılı beton karışımları hazırlanmıştır. Deneysel sonuçlar, PES lif katkısının betonun mekanik özelliklerini artırabileceğini, özellikle eğilme dayanımında olumlu etki sağladığını ortaya koymaktadır. Eğilme kazancına yönelik %1.5 lif katkı oranında %32.4’lük bir kazanç elde edilmiştir. Lif uzunluğunun artması ve karışım oranlarının artması ile yalıtkanlık değerlerinde dikkate değer bir artış görünmektedir. Dolayısıyla lif uzunlukları ve lif içerik oranları ile mekanik ve yalıtım özellikleri arasındaki ilişkilere yönelik R2 0.98 korelasyon katsayısı ile tahmin edilebileceğini ortaya koymaktadır. Bu çalışma, inşaat sektöründe sentetik liflerin içeriğinin beton karışımlarına entegrasyonu etkili bir tasarım yaklaşımı olarak görünmektedir.

Anahtar Kelimeler

• Polyester Lifi
• Basınç Dayanımı
• Eğilme Dayanımı
• Isı yalıtım

THE EFFECT OF POLYESTER FIBER LENGTH AND MIX RATIO ON MECHANICAL AND THERMAL INSULATION PROPERTIES OF CONCRETE

Öz

Polyester (PES) fiber, recognized as the most widely used and consumed synthetic fiber in the textile industry, is a significant raw material source that provides superior insulation and performance characteristics in construction materials. Therefore, this study focuses on the relationships among compressive strength, flexural strength, and thermal insulation properties in PES fiber-incorporated concrete designed with different PES fiber lengths (3, 4.5 and 6 cm) and different content ratios. For this purpose, randomly distributed fiber-incorporated concrete mixtures containing 0%, 0.5%, 1% and 1.5% PES fiber by weight of cement were prepared. Experimental results indicate that PES fiber additive can enhance the mechanical properties of concrete, particularly providing a positive effect on flexural strength. A significant enhancement in thermal insulation values is observed with the increase of fiber length and fiber content ratios. Therefore, it is revealed that the relationships between fiber lengths and fiber content ratios and mechanical and insulation properties can be estimated with a correlation coefficient of R2 of 0.98. This study demonstrates that the integration of synthetic fibers into concrete mixtures represents an effective design approach in the construction industry.

Anahtar Kelimeler

• Polyester Fiber
• Compressive Strength
• Flexural Strength
• Thermal Insulation

Kaynakça

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