Journal ArticleDOI
A review of the performance of geosynthetics for environmental protection
TLDR
In this article, the authors present an updated overview of the properties of transfer of geosynthetic liner materials used in environmental applications, focusing on the high temperatures that can be encountered and the concomitant risk of desiccation.About:
This article is published in Geotextiles and Geomembranes.The article was published on 2016-10-01. It has received 54 citations till now. The article focuses on the topics: Geosynthetic clay liner & Geosynthetics.read more
Citations
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Journal ArticleDOI
Insufficient initial hydration of GCLs from some subgrades: Factors and causes
TL;DR: Water retention and hydration tests are reported for three needle punched geosynthetic clay liners (GCLs) in this paper, where GCLs hydration and their maximum hydration capacity were assessed against subgrade soils prepared at different initial gravimetric water contents.
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Heat mitigation in geosynthetic composite liners exposed to elevated temperatures
TL;DR: In this paper, the authors examined the effect of the presence of wrinkles in the geomembrane (GMB) as well as defects, and the existence of a gap between the primary and the secondary liners caused by a leak detection system.
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Performance issues of barrier systems for landfills: A review
TL;DR: In this paper, the performance issues of barrier systems for landfills are discussed and an insight is given in modeling and laboratory measurement of parameters required to perform reliable modeling, especially as regards the case of piggy-back landfs.
Journal ArticleDOI
Time-dependent unsaturated behaviour of geosynthetic clay liners
A.S. Acikel,Will P. Gates,Rao Martand Singh,Abdelmalek Bouazza,Delwyn G. Fredlund,R. K. Rowe +5 more
TL;DR: In this paper, three different chilled-mirror hygrometer test procedures were developed to investigate the time-dependent unsaturated behaviour of powdered and granular bentonite based needle-punched geosynthetic plants.
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Micro X-ray visualisation of the interaction of geosynthetic clay liner components after partial hydration
TL;DR: In this paper, high-resolution X-ray tomography was used to observe a partially hydrated geosynthetic clay liner (GCL) specimen to gain a better understanding of the interaction of its compnents (i.e., geotextiles, fibres and bentonite) on partial hydration when deployed as part of a composite liner system.
References
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Journal ArticleDOI
A closed-form equation for predicting the hydraulic conductivity of unsaturated soils
van Genuchten,M. Th. +1 more
TL;DR: Van Genuchten et al. as mentioned in this paper proposed a closed-form analytical expression for predicting the hydraulic conductivity of unsaturated soils based on the Mualem theory, which can be used to predict the unsaturated hydraulic flow and mass transport in unsaturated zone.
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Equations for the soil-water characteristic curve
Delwyn G. Fredlund,Anqing Xing +1 more
TL;DR: In this paper, a nonlinear, least squares computer program is used to determine the best-fit parameters for experimental data presented in the literature, based on the assumption that the shape of the soil-water characteristic curve is dependent upon the pore-size distribution.
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Present and long-term composition of msw landfill leachate: a review
Peter Kjeldsen,Morton A. Barlaz,Alix P. Rooker,Anders Baun,Anna Ledin,Thomas Højlund Christensen +5 more
TL;DR: In this paper, the long-term behavior of landfills with respect to changes in oxidation-reduction status is discussed based on theory and model simulations, and it seems that the somewhere postulated enhanced release of accumulated heavy metals would not take place within the time frames of thousands of years.
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Predicting the permeability function for unsaturated soils using the soil-water characteristic curve
TL;DR: The coefficient of permeability for unsaturated soil is primarily determined by the pore-size distribution of the soil and can be predicted from the soil-water characteristic curve as mentioned in this paper.
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Adsorption of phenol by bentonite.
TL;DR: The ability of bentonite to adsorb phenol from cyclo hexane decreased as the water to cyclohexane ratio was increased and hysteresis was observed in phenol desorption from bentonite in aqueous solutions.