Swelling characteristics and hydraulic properties of GCLs under vertical stress
LI Zhibin 1, XU Chao 2
1.Construction and Traffic Committee of Changning District Shanghai 200050 China 2.Department of Geotechnical Engineering Tongji University Shanghai 200092 China
Abstract：Recently,geosynthetic clay liners(GCLs) have been more and more used in different anti-seepage engineering projects.Their anti-seepage availabilities include hydraulic properties,absorption ability and internal shear strength and GCLs become a focus of designers and researchers.Swelling characteristics and hydraulic properties of GCLs under vertical stress were studied through hydration swelling tests and permeation tests.It was indicated that:(1) swelling of GCLs decreased with the increasing of vertical stress,but the hydraulic conductivity of GCLs decreased at the beginning,and then increased a little;(2) hydration-loading sequence had impact on both swell and hydraulic conductivity of GCLs;(3) in practice,GCLs had better been fully hydrated before loading on them,thus the anti-seepage availability could be greatly improved.
李志斌；徐超；. 竖向应力作用下GCL的膨胀特性和渗透性能[J]. 岩土工程学报, 2007, 29(12): 1876-1880.
LI Zhibin 1, XU Chao 2. Swelling characteristics and hydraulic properties of GCLs under vertical stress. Chinese J. Geot. Eng., 2007, 29(12): 1876-1880.
