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Volume 4 Issue 2
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Chen Shouyi, Cheng Changbing, Xu Changwei. Determination of ξ-potential of Clay by Using Streaming Potential Method[J]. Chinese Journal of Geotechnical Engineering, 1982, 4(2): 49-56.
Citation: Chen Shouyi, Cheng Changbing, Xu Changwei. Determination of ξ-potential of Clay by Using Streaming Potential Method[J]. Chinese Journal of Geotechnical Engineering, 1982, 4(2): 49-56.
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Determination of ξ-potential of Clay by Using Streaming Potential Method

  • Institute of Rock and Soil Mechanics Academia Sinica Wuhan

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  • Published Date: May 19, 1982
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  • In this paper, it is illustrated that how to use the streaming potential method to determine the ξ-potential of Clay. A conductivity factor α,α=Kb/K+βKs,is introduced in order to overcome the difficulty which appears in application of the equationEs=PDξ/4πη（K+βKs） to soil. The physical meaning of the coefficient α and the determi-nation of a are demonstrated.The results of experiment on remolded Na-kaolin show that the effect of surface conductivity cannot be neglected if the concentration of electrolyte is lower than 10-1 N. The method given by this paper, then, possesses more value for most natural clayey soil.
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