Atık tekstilin kohezyonlu zeminin serbest basınç dayanımı üzerindeki etkisi

Öz

Geoteknik mühendisliğinde sürdürülebilir ve çevre dostu çözümlere duyulan ihtiyacın artması, zemin iyileştirmesi için atık malzemelerin kullanılmasına yönelik önemli bir ilgi uyandırmıştır. Bu çalışma, tekstil atıklarının geri dönüşümüne katkıda bulunurken zemin özelliklerini geliştirmeyi amaçlayarak, atık kot kumaşın killi siltli zemin için bir takviye malzemesi olarak kullanımını araştırmaktadır. Atık kot kumaş üç en boy oranında (A1: 6×6 mm, A2: 6×12 mm ve A4: 6×24 mm) hazırlanmış ve kuru ağırlık temel alınarak farklı oranlarda (%0,4, %0,8 ve %1,6) zemine dahil edilmiştir. Kot takviyesinin gerilme-şekil değiştirme davranışı, UCS değeri, elastik modül, UCS artış oranı, deforme olabilirlik indeksi ve normalize edilmiş enerji yutma kapasitesi üzerindeki etkilerini analiz etmek için serbest basınç dayanımı (UCS) deneyleri yapılmıştır. Sonuçlar, güçlendirilmiş zeminin mekanik özelliklerinde güçlendirilmemiş zemine kıyasla önemli bir artış olduğunu göstermiştir. UCS, kot takviyesiyle önemli ölçüde artmış, en yüksek mukavemet A4 boyutlu kumaşta %1,6 ve %0,4 takviye oranlarında elde edilerek sırasıyla yaklaşık %41,67 ve %40,91 artış sağlanmıştır. Ayrıca, enerji emme kapasitesi A4 boyutlu kumaşla en önemli gelişmeyi göstererek normalleştirilmiş 1,4 değerine ulaşmış ve yükleme altında enerjiyi dağıtma konusundaki üstün yeteneğini göstermiştir. Ek olarak, zemin sağlamlığını temsil eden elastik modül, kot takviyesiyle, özellikle de tüm konfigürasyonlar arasında en yüksek değeri elde eden %0,4 A4 kumaşla artmıştır. Çalışma, atık kot kumaşın zemin iyileştirmesi için uygulanabilir, sürdürülebilir bir malzeme olduğu ve geleneksel zemin stabilizasyon yöntemlerine çevre dostu bir alternatif sunduğu sonucuna varmaktadır.

Anahtar Kelimeler

• UCS
• Zemin iyileştirme
• gerilme-şekil değiştirme davranışı
• atık kot kumaşı

Influence of waste textile on the unconfined compressive strength of cohesive soil

Öz

The increasing need for sustainable and environmentally friendly solutions in geotechnical engineering has prompted significant interest in utilizing waste materials for soil improvement. This study explores the utilize of waste denim fabric as a reinforcement material for clayey silt soil, aiming to enhance soil properties while contributing to the recycling of textile waste. Waste denim was prepared in three aspect ratios (A1: 6×6 mm, A2: 6×12 mm, and A4: 6×24 mm) and incorporated to the soil in different ratios based on dry weight (0.4%, 0.8%, and 1.6%). Unconfined compressive strength (UCS) tests were conducted to analyze the effects of denim reinforcement on stress-strain behavior, UCS value, elastic modulus, UCS increase ratio, deformability index, and normalized energy absorption capacity. The results demonstrated a significant enhancement in the mechanical properties of the reinforced soil compared to the unreinforced soil. The UCS increased notably with denim reinforcement, with the highest strength achieved by A4-sized fabric at 1.6% and 0.4% reinforcement rates, yielding approximately 41.67% and 40.91% increases, respectively. Furthermore, the energy absorption index showed the most substantial improvement with A4-sized fabric, reaching a normalized value of 1.4, highlighting its superior ability to dissipate energy under loading. Additionally, the elastic modulus, representing soil stiffness, increased with denim reinforcement, particularly with 0.4% A4 fabric, which achieved the highest value among all configurations. The study concludes that waste denim fabric is a viable, sustainable material for soil improvement, offering an eco-friendly alternative to traditional soil stabilization methods.

Anahtar Kelimeler

• UCS
• soil improvement
• stress-strain behavior
• waste denim fabric

Kaynakça

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