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http://dx.doi.org/10.7843/kgs.2007.23.3.41

Characteristics of Shear Behavior of Remolded Nak-dong River Sandy Silt  

Kim Young-Su (Dept. of Civil Engrg., Kyungpook National Univ.)
Tint Khin Swe (Dept. of Civil Engrg., Kyungpook National Univ.)
Kim Dae-Man (Dept. of Civil Engrg., Jinju National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.3, 2007 , pp. 41-50 More about this Journal
Abstract
The results from normally consolidated isotropic drained and undrained triaxial compression tests (NCIU and NCID) on sand with high silt content were presented in this paper. The experiments were performed on specimens of Nak-dong River sand with 63% silt content under effective confined pressures, 100 kPa to 400 kPa. From test results, Sandy silt became initially compressive but eventually appeared to provide dilatancy response throughout the entire stress-strain curve The behavior of sandy silt was more difficult to characterize than that of clay and sand due to lower plastic characteristic. Especially, the samples exhibited dilatancy development during shear after failure. The shear behavior and shear strength parameters of sandy silt can be determined as stress-strain behaviors are described by the Mohr-Coulomb failure criterion. The shear behaviors were observed increasing dilatancy volume change tendency with strain-softening tendency after failure. In this paper, the behavior of dilatancy depends on not only sand content but also fine content with low-cohesion during shear in the samples of sandy silt.
Keywords
Critical state line; Sandy silt; Shear strength; Stress-strain response; Triaxial tests;
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Times Cited By KSCI : 1  (Citation Analysis)
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