Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2019 / Cilt: 25 - Sayı: 6

Performance of granular soils reinforced with obsidian (volcanic glass) additives in different proportions subjected to freeze-thaw

Donma-çözülmeye tabi tutulan farklı oranlarda obsidiyen (volkanik cam) katkı maddesi ile güçlendirilmiş taneli zeminlerin performansı

Pages
764–767
Publication Date
2019-11-25
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result, it was concluded that the highest strength increase of granular soil+ %5 obsidian mixture can be used especially in cold climatic zones.

📌 3 Key Takeaways

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Objective & Hypothesis:The use of natural materials to improve the engineering properties of poor soils has become more common today.
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Key Findings & Data:The aim of this study is to determine the usability of the obsidian, which is a volcanic rock that is spreading mostly in the Eastern Anatolia Region, on the soils and foundation strengthening in the areas where the freeze-thaw events are frequently experienced. %5, %10 and %15 pulverized obsidian were added to the granular soil and unconfined compressive strengths were determined before and after freezing.
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Conclusion & Impact:As a result, it was concluded that the highest strength increase of granular soil+ %5 obsidian mixture can be used especially in cold climatic zones.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Taneli zemin · Obsidiyen · Mukavemet

Abstract

The use of natural materials to improve the engineering properties of poor soils has become more common today. The main reasons of this situation are the economy, sustainability and environmental impact. The aim of this study is to determine the usability of the obsidian, which is a volcanic rock that is spreading mostly in the Eastern Anatolia Region, on the soils and foundation strengthening in the areas where the freeze-thaw events are frequently experienced. %5, %10 and %15 pulverized obsidian were added to the granular soil and unconfined compressive strengths were determined before and after freezing. Experiments were carried out on granular soil samples prepared by compression under standard proctor energy. At the end of the 28-day curing period where the highest unconfined compressive strength was obtained, the granular soil + 5% Obsidian mixture increased 63.50% before the freeze-thawing and 52.62% after freezing-thawing compared to the granular soil which is the main material. As a result, it was concluded that the highest strength increase of granular soil+ %5 obsidian mixture can be used especially in cold climatic zones.

Özet

Zayıf zeminlerin mühendislik özelliklerini iyileştirmek için doğal malzemelerin kullanımı günümüzde daha yaygın hale gelmiştir. Bu durumun temel sebeplerini ekonomi, sürdürülebilirlik ve çevresel etki oluşturmaktadır. Bu çalışmada özellikle, Doğu Anadolu Bölgesinde yayılım gösteren volkanik bir kayaç olan obsidiyenin (volkanik cam) taneli zeminlerin iyileştirilmesi ve donma-çözülme olaylarının sıkça yaşandığı bölgelerdeki mühendislik yapılarının temel ve alt temel uygulamalarında kullanılabilirliğinin belirlenmesi amaçlanmıştır. Taneli zemine, %5, %10 ve %15 oranlarında öğütülmüş obsidiyen ilave edilerek elde edilen numunelerin donma-çözülme öncesi ve sonrası serbest basınç mukavemetleri belirlenmiştir. Deneyler standart proktor enerjisi altında sıkıştırılması ile hazırlanan taneli zemin numuneleri üzerinden yürütülmüştür. En yüksek serbest basınç mukavemetin elde edildiği 28- günlük kür sonunda, taneli zemin+%5 Obsidiyen karışımı, ana malzeme olan taneli zemin ile karşılaştırıldığında donma-çözülme öncesi %63.50, donma-çözülme sonrası ise %52.62 oranında mukavemet artışı meydana gelmiştir. Sonuç olarak, en yüksek mukavemet artışlarının elde edildiği taneli zemin+5% obsidiyen karışımının özellikle soğuk iklim bölgelerinde kullanılabileceği kanaatine varılmıştır.

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Cite This Article

YARBAŞI, N. (2019). Performance of granular soils reinforced with obsidian (volcanic glass) additives in different proportions subjected to freeze-thaw. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 25 - Sayı: 6, 764–767. https://ajindex.com/articles/42167

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