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http://dx.doi.org/10.7843/kgs.2007.23.4.91

Effect of Fine Content on the Monotonic Shear Behavior of Sand-Clay Mixtures  

Kim, Uk-Gie (Dept. of Civil Eng., Yamaguchi Univ.)
Masayuki, Hyodo (Dept. of Civil Eng., Yamaguchi Univ.)
Beak, Won-Jin (Dept. of Civil Eng., Yamaguchi Univ.)
Ahn, Tae-Bong (Dept. of Civil Eng., Woosong Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.4, 2007 , pp. 91-100 More about this Journal
Abstract
In most design codes, soils are classified as either sand or clay, and appropriate design equations are used to represent their behavior. For example, the behavior of sandy soils is expressed in terms of the relative density, whereas consistency limits are often used for clays. However, sand-clay mixtures, which are typically referred to as intermediate soils, cannot be easily categorized as either sand or clay and therefore a unified interpretation of how the soil will behave at the transition point, i.e., from sandy behavior when fines are low to clay behavior for high fines content, is necessary. In this study, active natural clays are mixed with sand, and the fines content varied in order to produce different structures, ranging from one state where only sand particles form the soil structure to another where the matrix of fines make-up the structure. While paying attention to the granular void ratio in order to clarify the shear properties of sand-clay mixtures with increasing fines content monotonic, shear tests were performed on isotropically, and anisotropically consolidated specimens. From the test results, it was observed that the monotonic shear strength of sand-clay mixtures is dependent on the granular void ratio.
Keywords
Fines content; Granular void ratio; Initial shear condition; Monotonic shear strength; Sand-clay mixture;
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