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Experimental Study on the Electrochemical Properties and Matric Suction of Unsaturated Loess-like silt

International Journal of Electrochemical Science, ISSN: 1452-3981, Vol: 17, Issue: 8, Page: 220844
2022
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Article Description

The properties of unsaturated loess-like silt were explored by measuring the matric suction in the soil and recording electrochemical impedance spectra. Soil water characteristic curves were determined and equivalent circuits were integrated, which contain 7 purposeful resistance and reactance parameters. The matric suction and electrochemical characteristics of loess-like silt with different initial dry densities and water contents were studied. The relationship between them was then established. The results show that the dry density and water content of the soil have a significant effect on the matric suction and electrochemical characteristics of the loess-like silt. The electrochemical parameter pore resistance reflects the pore state of the soil and the connected pore resistance can characterize the strength of the matric suction in loess-like silt. The matric suction and connected pore resistance in loess-like silt with a given dry density are positively linearly correlated and the correlation increases or decreases as the water content is changed.

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