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Full-Text Articles in Civil and Environmental Engineering
Effect Of Particle Swelling On Hydraulic Performance And Meso-Mechanism Of Geosynthetic Clay Liners, Juan Hou, Jin-Bang Zhang, Yin-Yu Sun, Rui Sun, Fei-Yu Liu
Effect Of Particle Swelling On Hydraulic Performance And Meso-Mechanism Of Geosynthetic Clay Liners, Juan Hou, Jin-Bang Zhang, Yin-Yu Sun, Rui Sun, Fei-Yu Liu
Rock and Soil Mechanics
The hydraulic performance of geosynthetic clay liners (GCL) is closely related to the swelling characteristics of the bentonite particles and the resulting porous medium. However, there currently needs to be more analysis at the mesoscopic level to understand the permeating mechanisms. A numerical model using COMSOL was developed to study the effects of particle swelling on the effective porosity, tortuosity, and hydraulic conductivity of GCL under deionized water actions. The results demonstrate that the swelling of bentonite particles is a crucial factor influencing the effective porosity, tortuosity, and hydraulic conductivity of GCL. Particle swelling significantly affects the width and number …
A Rapid Determination Method Of Hydraulic Conductivity In Full Suction Range, A-Qiang Liu, Xu Li, Yan Liu, Zhi-Yuan Zhang
A Rapid Determination Method Of Hydraulic Conductivity In Full Suction Range, A-Qiang Liu, Xu Li, Yan Liu, Zhi-Yuan Zhang
Rock and Soil Mechanics
The hydraulic conductivity function of unsaturated soil spans several orders of magnitude. Traditional measurement methods often take several months, and it is difficult to measure the hydraulic conductivity in the full suction range. In order to realize the rapid measurement of hydraulic conductivity in the full suction range, the wetting front advancing method is combined with the instantaneous profile method (here referred to as the combined determination method) in this study. A self-developed soil column infiltration device was used to measure the hydraulic conductivity of Qinghai silty clay in the full suction range under different dry densities. The test results …