INVESTIGATING THE UTILITY OF SISAL IN HOT MIX ASPHALT AS A FIBER

Prepared fibers are added into HMA mixtures at different ratios (1, 2 and 3‰ by weight of mixture) based on optimum bitumen content. 1‰ short sisal fiber added specimen gave the best unconditioned indirect tensile strength values, and also long fibers gave best tensile strength ratios.

📌 3 Key Takeaways

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Objective & Hypothesis:Hot mix asphalt (HMA) is very common as a highway construction material.

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Key Findings & Data:Then, fiber is prepared as short (~3 cm) and long (15 – 100 cm) pieces.

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Conclusion & Impact:Prepared fibers are added into HMA mixtures at different ratios (1, 2 and 3‰ by weight of mixture) based on optimum bitumen content. 1‰ short sisal fiber added specimen gave the best unconditioned indirect tensile strength values, and also long fibers gave best tensile strength ratios.

🔬Design:Research Article

📍Scope:Comprehensive Sample

⚙️Variables:Sisal · Agave Sisalana · Fiber

Abstract

Hot mix asphalt (HMA) is very common as a highway construction material. Although investment costs are lower than other pavements, HMA needs maintenance and rehabilitation (M&R) more often because of environmental conditions. The time needed for M&R can be extended by using fibers in the mixture. In this study, utility of sisal (Agave Sisalana) plants’ fibers are investigated in HMA. Initially, optimum bitumen content according to best aggregate gradation is determined using Superpave volumetric mix design process. Then, fiber is prepared as short (~3 cm) and long (15 – 100 cm) pieces. Prepared fibers are added into HMA mixtures at different ratios (1, 2 and 3‰ by weight of mixture) based on optimum bitumen content. 1‰ short sisal fiber added specimen gave the best unconditioned indirect tensile strength values, and also long fibers gave best tensile strength ratios.

Özet

Bitümlü Sıcak Karışımlar (BSK) karayolu inşasında yaygın olarak kullanılmaktadır. Diğer üstyapı türlerine göre yatırım maliyetinin düşük olmasına rağmen, sıklıkla çevresel koşullardan dolayı bakım ve rehabilitasyona (B&R) ihtiyaç duymaktadır. B&R için ihtiyaç duyulan süreyi uzatmak için BSK içerisinde lif kullanılabilmektedir. Bu çalışmada, sisal (agave sisalana) ağaçlarının liflerinin BSK içinde kullanılabilirliği incelenmiştir. İlk olarak Superpave karışım tasarımı kullanılarak en iyi agrega gradasyonuna göre optimum bağlayıcı içeriği belirlenmiştir. Daha sonra, lifler kısa (~3 cm) ve uzun (15 – 100 cm) olmak üzere iki uzunlukta hazırlanmıştır. Hazırlanan lifler optimum bağlayıcı içeriğine bağlı olarak farklı oranlarda (‰1, ‰2 ve ‰3, ağırlıkça) karışıma eklenmiştir. En iyi şartlandırılmamış indirekt çekme dayanımı ‰1 kısa sisal lif eklenen karışımlarda elde edilmiş, en iyi indirekt çekme oranı ise uzun liflerle elde edilmiştir.

Keywords

Sisal Agave Sisalana Fiber İndirekt Çekme Dayanımı İndirekt Çekme Oranı Indirect Tensile Strength Tensile Strength Ratio

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Cite This Article

ERİŞKİN, E., KÜÇÜKÇAPRAZ, D. Ö., TERZİ, S., SALTAN, M., SARIOĞLU, O., KARAHANCER, Ş. (2022). INVESTIGATING THE UTILITY OF SISAL IN HOT MIX ASPHALT AS A FIBER. Mühendislik Bilimleri ve Tasarım Dergisi, Cilt: 7 - Sayı: 4, 906–912. https://ajindex.com/articles/583685

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