Bazalt Lifi ile Güçlendirilmiş Killi Zeminin Mühendislik Özellikleri Üzerine Deneysel Araştırma

Öz

Son zamanlarda düşük maliyetleri, yeterli dayanımları ve kolay ulaşılabilirlikleri nedeniyle zeminlerin güçlendirilmesinde liflerin kullanılması tekniği, geleneksel zemin güçlendirme yöntemlerine bir alternatif olarak araştırmacıların dikkatini çekmeyi başarmıştır. Bu çalışmada, farklı uzunluk ve miktarlarda bazalt lifi ile güçlendirilmiş kil zeminin kayma mukavemetindeki değişim direkt kesme deneyi ile araştırılmıştır. Bu amaç için, zeminin kuru ağırlığının bir yüzdesi olarak; 9 mm uzunlukta lif için %0, %0,5, %0,75 ve %1,0; 15 mm uzunlukta lif için %0, %0,5 %1,0, %1,5, %2,0 ve 22 mm uzunlukta lif için %0, %0,5, %1,0 ve %1,5 miktarlarında bazalt lif kullanılmıştır. Deneylerin sonucunda, 15 mm uzunluktaki bazalt liflerden zemin içerisine %1,5 miktarında ilave edilmesi ile en yüksek kayma mukavemeti ve kohezyon değerleri elde edilmiştir. En yüksek içsel sürtünme açısı değeri ise 22 mm uzunlukta %0,5 oranında lif ile güçlendirilmiş zeminde gözlenmiştir. Elde edilen sonuçlar çalışmanın amacına uygun olarak değerlendirilmiştir.

Anahtar Kelimeler

• Bazalt lif
• Zeminlerin güçlendirilmesi
• Lif uzunluğu
• Direkt kesme deneyi
• Kayma mukavemeti

Experimental Research on the Engineering Properties of Basalt Fiber Reinforced Clayey Soil

Öz

In recent times, the method of using reinforcement with randomly distributed fibers of soils has attracted the attention of researchers, as an alternative method instead of traditional soil reinforcement methods, with the advantages of low cost, sufficient strength and easy accessibility. In this study, the change in shear strength of clay soil reinforced with basalt fiber in different lengths and contents was investigated by direct shear test. For this purpose, basalt fiber was used at the contents of 0%, 0.5%, 0.75%, and 1.0% for 9 mm long fiber, 0%, 0.5%, 1.0%, 1.5%, and 2% for 15 mm long fiber and 0%, 0.5%, 1.0% and 1.5% for 22 mm long fiber as a percentage of the dry weight of the soil. As a result, the highest shear strength and cohesion values were obtained by adding 15 mm length basalt fiber at the content of 1.5% into clay soil. The highest internal friction angle value was observed in reinforced soil with 22 mm long fiber at the content of %0.5. The results were evaluated in accordance with the purpose of the study.

Anahtar Kelimeler

• Basalt fiber
• Soil reinforcement
• Fiber length
• Direct shear test
• Shear strength

Kaynakça

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