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Biyopolimer katkıların killi ve kumlu zeminlerin permeabilite ve kayma dayanımına etkisinin araştırılması

Investigation of the biopolymer additives effect on permeability and shear strength of clayey and sandy soils

Journal Name:

  • Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi

Publication Year:

  • 2017
DOI: 
10.5505/pajes.2016.01328

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Many methods are used to improve the engineering properties of the soils. While the some of the developed methods cannot produce an effective solution, some of them are not economical for practical solution. In this study, permeability and shear strength behaviors of natural kaolin, bentonite and sand mixtures have been investigated in the presence of three different biopolymers (xanthan gum, chitosan and chitin) and different concentrations (0.25-0.50-0.75 and 1%). The results have shown that, the xanthan gum and chitosan addition decreased the permeability coefficient almost 30 hold. While the biopolymer effect on shear strength behavior is investigated, 1% xanthan gum and chitosan concentration addition provided 15-10% increase in angle of internal friction. The obtained test results have shown that, biopolymers can be used in dams and landfills at impermeable clay liner applications.
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Abstract (Original Language): 
Zeminlerin mühendislik özelliklerini iyileştirmek amacıyla birçok metot kullanılmaktadır. Geliştirilen metotların bazıları etkili bir çözüm üretemezken bazılarıysa pratik amaçlar için ekonomik olmayabilir. Bu çalışmada doğal kaolin, bentonit ve kum karışımlarının permeabilite ve kayma dayanımı davranışları üç farklı tür biyopolimerin (zantan gam, kitosan ve kitin) %0.25, %0.5, %0.75, %1 konsantrasyonları varlığında incelenmiştir. Deney sonuçları incelendiğinde zantan gam ve kitosanın permeabilite katsayısında 30 katı bulan azalmalara neden olduğu görülmüştür. Biyopolimerlerin kayma dayanımına etkisine bakıldığında %1’lik zantan gam ve kitosan konsantrasyonunun içsel sürtünme açısı değerinde %10-15 oranında bir artış sağladığı belirlenmiştir. Bu çalışmadan elde edilen sonuçlar biyopolimerlerin geçirimsiz kil bariyerlere ihtiyaç duyulan baraj gövdelerinde ve çöp depolama alanlarında kullanılabileceğini göstermiştir.
FULL TEXT (PDF): 
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  • Turkish

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