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Shear Resistance of Sandy Soils Depending on Particle Shape
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 Title & Authors
Shear Resistance of Sandy Soils Depending on Particle Shape
Suh, Hyoung Suk; Jo, Yumin; Yun, Tae Sup; Kim, Kwang Yeom;
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 Abstract
This study presents the correlations between quantified particle shape parameters and internal friction angles for nine sand specimens including six natural sands and three crushed sands. Specimens are subjected to 3D X-ray computed tomographic imaging and their particles are segmented through the aid of image processing techniques. Shapes of segmented particles are then quantified through two shape parameters such as sphericity and elongation. The direct shear apparatus enables us to measure peak and critical state friction angles of sand specimens of distinct relative densities. The gathered data show that decreasing sphericity and increasing elongation cause increases in peak and critical state friction angle with similar gradients.
 Keywords
Shear strength;Particle shape;Image processing;3D X-ray CT;
 Language
Korean
 Cited by
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