Analytical Investigation of Electroosmotic Consolidation in Unsaturated Soils Considering the Coupling Effect and a Nonuniform Initial Water Content

Wang, L. J.; Wang, Y. M.; Liu, S. H.; Huang, Penghua

doi:10.1061/(asce)gm.1943-5622.0002053

Cited by 6 publications

(2 citation statements)

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“…Evaluating the efficiency of electroosmotic drainage from the perspective of energy loss is a new approach that incorporates soil thermal energy and interfacial energy into the evaluation model, which can accurately describe the efficiency of electroosmotic drainage [6]. The electrode material, soil moisture characteristic curve, changes in soil resistance, and pH value all affect the efficiency and energy consumption of electroosmosis [7][8][9][10][11][12]. The electroosmotic permeability coefficient is an important parameter in the electroosmotic consolidation process.…”

Section: Introductionmentioning

confidence: 99%

“…Of course, the changes in the electric potential field also need to consider the influence of interface properties caused by electrode corrosion. Therefore, it is necessary to consider the impact of electric potential distribution on pore water pressure [8,[24][25][26]. The introduction of electrode spacing and nonlinear electric potential distribution further improves the rationality and reliability of the electroosmotic consolidation theory model.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Investigation of One-Dimensional Electroosmotic Consolidation Based on Segment Inheritance Strategy

Yang,

Pei,

Xie

et al. 2024

Advances in Civil Engineering

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The attenuation of effective potential is a significant factor leading to the low postdrainage efficiency in the electroosmotic consolidation and drainage methods. In this study, the influence of the attenuation of effective potential on the electroosmotic consolidation process and the problem of solving the governing equations were investigated. A 102.5-hr one-dimensional electroosmotic consolidation test was performed to monitor the changes in the properties of the soil interior and the soil–electrode interface, and the variation curve of the effective potential in the test model was measured. The time-dependent nature of the potential distribution due to the attenuation of effective potential contradicts the assumption of introducing intermediate variables. To address this key issue, the variation curve of the effective potential was linearly segmented, ensuring the validity of introducing intermediate variables within each local state segment. Based on the continuity between state segments, the initial conditions of the governing equations in different state segments were updated, thereby extending the differential iteration within local state segments to the entire electroosmotic time domain. A finite-difference program for this method was developed using the Python language. Calculations and analyses based on the measured potential data were performed, revealing that a decrease in potential leads to a reduction in the effectiveness of electroosmotic drainage and consolidation in terms of the instantaneous distribution of pore pressure and the overall average degree of consolidation. This method can reflect the influence of the attenuation of effective potential on the pore water pressure during the electroosmotic consolidation process. The research findings of this paper can provide theoretical and numerical support for the improvement and engineering application of the electroosmotic consolidation and drainage method.

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