Guar Gum ile İyileştirilen Kil Zeminlerin Donma Çözülme Etkisinde Mukavemet ve Şişme Basınçlarının Araştırılması

Son yıllarda çevresel kaygılardan dolayı biyopolimerler gibi organik ve çevre dostu malzemelerin kullanım alanları hızla artmaktadır. Bu çalışmada bir biopolimer olan Guar Gum kullanılarak kohezyonlu bir zeminin iyileştirilmesi araştırılmıştır. Bu amaçla kohezyonlu bir zemine belli oranlarda (%1, %2 ve %3) guar gum karıştırılarak numuneler hazırlanmıştır. Numuneler farklı sürelerde kür edilmiş ve farklı sayılarda (1, 3, 5, 10) donma çözülmeye tabi tutulmuştur. Çalışmada Guar Gum’un karışım oranı ile kür süresi ve donma çözülmenin serbest basınç mukavemeti ve şişme basıncı üzerindeki etkileri araştırılmıştır. Sonuç olarak, biyopolimer katkı malzemesinin kohezyonlu bir zeminin serbest basınç mukavemeti ve şişme basıncı üzerinde olumlu etkileri olduğu belirlenmiştir. Ayrıca bu etkilerin kür süresi ve donma çözülme ile önemli ölçüde değiştiği elde edilmiştir.

Anahtar Kelimeler:

Guar gum, Zemin iyileştirmesi, Biyopolimer, Donma-çözülme, Şişme basıncı

Investigation of Strengths and Swelling Pressures in Freeze-Thaw Effect of Clay Soils Improved by Guar Gum

Nowadays, the areas of use of organic and environmentally friendly materials such as biopolymers have been increasing rapidly due to environmental concerns. The improvement of a cohesive soil using Guar Gum (GG) was investigated in this research. For this purpose, samples were prepared by adding GG to cohesive soil in some proportions (1%, 2%, and 3%). Specimens exposed to different numbers of freeze-thaw cycles (1, 3, 5, and 10) were cured for different times. Unconfined compression strength (UCS) and swelling pressure tests were carried out on the prepared samples. As a result, it was seen that the addition of biopolymer to the clay soils has a positive effect on strength values and swelling pressures. In addition, curing time and freeze-thaw conditions were thought to play an important role in soil improvement with the use of biopolymer.

Keywords:

Guar gum, Soil improvement, Biopolymer, Freeze-thaw, Swelling pressure,

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