Kilin Çelik Cürufu ile Stabilizasyonu

Öz

Yetersiz taşıma kapasitesine sahip kil ve şişen zeminler ve oturma sorunları mühendisler için dünya çapında bir sorundur. Zeminlerin taşıma kapasitesini ve dayanıklılık özelliklerini iyileştirmek ve şişme problemlerini en aza indirmek için kullanılan katkı maddeleri ile zemin stabilizasyonunda en yaygın ve ekonomik yöntemler kullanılır. Zeminlerin inşaat atığı, silis dumanı, uçucu kül, plastik atık ve cam atığı gibi farklı katkı maddeleri ile stabilizasyonuna literatürde sıklıkla rastlanmaktadır . Günümüzde artan çevre kirliliği, doğaya zarar vermesi ve ekolojik dengenin bozulması nedeniyle bu atıkların kontrollü depolanması sorununu ortaya çıkarmaktadır. Bu atıkların geri dönüşüm ürünü olarak kullanılması hem doğaya hem de bazı mühendislik problemlerinin çözümüne katkı sağlamaktadır. Bu çalışmada Burdur - Muğla bölgesinden elde edilen yumuşak kil ve demir cürufu ile killi zeminlerin stabilizasyonu, dayanıklılık özelliklerinin iyileştirilmesi, şişme basıncının ve potansiyelinin azaltılmasına yönelik deneysel araştırmalar yapılacaktır. Bu amaçla kuru kil ağırlığının % 10,15,20' si oranında cüruf içeren cüruf-kil karışımları hazırlanmıştır. Öncelikle kil numunesinin indeks özellikleri belirlenecek, dayanıklılık ve sıkışma testleri yapılacak ve odometre test seti yardımıyla şişme basıncı ve yüzdesi hesaplanmıştır. Sonrasında proktor sıkılığında hazırlanan kil numunelerine %10, %15 ve %20 oranında demir cürufu karıştırılarak aynı deneyler tekrarlanmıştır. Bu deneyin sonuçları grafik ve tablolar halinde sunulamuş ve demir cürufunun kile stabilizatör olarak kullanımıyla nem oranı, şişme yüzdesi, şişme basıncı değerlerinin azaldığı görülmüştür. Yapılan sonlu elemanlar analizlerinden ise oturma değerlerinin azaldığı ve gerilme şekillerinin değiştiği belirlenmiştir.

Anahtar Kelimeler

• Kil
• Çelik cürufu
• Stabilizasyon
• Plaxis 3D

Stabilization of Clay with Iron Slag

Öz

Clay and expansive soils with insufficient bearing capacity and settlement problems are a worldwide problem for engineers. The most common and economical methods are used in soil stabilization with additives used to improve the bearing capacity and durability properties of soils and to minimize swelling problems. Stabilization of soils with different additives such as construction waste, silica fume, fly ash, plastic waste and glass waste is frequently encountered in the literature. Today, increasing environmental pollution poses the problem of controlled storage of these wastes due to damage to nature and disruption of ecological balance. Using these wastes as recycling products contributes to both nature and the solution of some engineering problems. In this study, experimental research will be carried out on the stabilization of clay soils, improvement of durability properties, and reduction of swelling pressure and potential with soft clay and iron slag obtained from the Burdur- Muğla region. For this purpose, slag-clay mixtures containing slag at the rate of 10, 15, 20% of the dry clay weight were prepared. First of all, the index properties of the clay sample were determined, durability and compression tests were performed, and the swelling pressure and percentage were calculated with the help of an odometer test set. Afterwards, the same experiments were repeated by mixing 10%, 15% and 20% iron slag into the clay samples prepared at proctor density. The results of this experiment were presented in graphs and tables, and it was observed that the moisture content, swelling percentage and swelling pressure values decreased with the use of iron slag as a clay stabilizer. From the finite element analyses, it was determined that the settlement values decreased and the stress patterns changed.

Anahtar Kelimeler

• Clay
• Iron Slag
• Stabilization
• Plaxis 3D

Kaynakça

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