• Title/Summary/Keyword: 강도 정수

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Effect of Chewlical Transport on Stability of Earth Embankment

  • Ahn, Tae bong
    • Geotechnical Engineering
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    • v.12 no.3
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    • pp.109-126
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    • 1996
  • In this study, the chemical fluid considered is sodium chloride sloutions. The concentrations for the sodium chloride solutions are varied from 0 to 20%. A series of lab oratory triaxial tests are performed on the cylindrical specimens of sand bentonite mixture with different (5, 10, 15%) sodium chloride content solutions. Deformation(elastic modulus, E) and strength (cohesion, c', and angle of friction, f') parameters are obtained from the triaxial tests and they are expressed as functions of conf'ming pressure and sodium chloride solution concentrations. The stress-strain-strength behavior based on the above strength parameters is introduced to the finite element method with a residual flow procedure (RFP). By integrating a slope stability (limit equilibrium) procedure in the finite element method, factors of safety with time are computed.

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The Influence of Moisture on the Interface Shear Strength Between Geosynthetics (토목섬유의 접촉 전단강도에 대한 함수비의 영향)

  • Seo, Min-Woo;Park, In-Joon;Park, Jun-Boum
    • Journal of the Korean Geotechnical Society
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    • v.20 no.2
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    • pp.75-85
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    • 2004
  • Various geosynthetics are widely installed as a liner or a protective layer of waste landfills. The interface shear strength between the layers of geosynthetics in waste landfills is an important parameter to ensure the safety of bottom and cover system design. In this study, estimations of interface shear strength between geomembrane and geotextile or Geosynthetic Clay Liners (GCL) are performed by large direct shear tests. Especially, this research is focused on the effect of moisture within the interface shear strength between geosynthetics, because most interfaces are vulnerable to rain, leachate and groundwater beneath the liners.