...Y. Shi; H. Xie; X. Chen; H. R. Thomas Double composite liners (DCLs) have been widely used in landfills to protect the surrounding environment. This study aims to develop simplified empirical equations for calculating breakthrough times of DCLs based on analytical equations or experimental data...

...K. V. N. S. Raviteja; K. V. B. S. Kavya; R. Senapati; K. R. Reddy Geomembrane (GM) liners anchored in the trenches of municipal solid waste (MSW) landfills undergo pull-out failure when the applied tensile stresses exceed the ultimate strength of the liner. The present study estimates the tensile...

... landfill leachate under a range of applied stresses (10–150 kPa). The effect of three different prehydration fluids, a 4 mm diameter central coating defect, coating defect position, and the effect of coating orientation of the GCL were investigated. It was found that at an applied stress of less than 70...

... of membrane to bending strains and fits the measured grid strain method used in this study well. 16 09 2020 11 06 2021 © 2021 Thomas Telford Ltd 2021 Geosynthetics geomembrane strain stress cracking tire derived aggregate landfill Geomembranes are typically used with a clay...

...P. Yang; Y.-h. Liu; K. Yang; Z.-b. Ouyang The leakage of graphene oxide nanoparticles (GONPs) in landfills poses a great threat to the environment. A series of column tests were conducted to investigate the effects of hydrostatic pressure, input concentration and bentonite modification...

...S. C. Ryoo; A. H. Aydilek Landfill covers are required by federal regulations to cap municipal solid waste and prevent leachate formation. The use of compost as part of a vegetative layer in landfill final covers is one way to improve the sustainability of landfills. In order to successfully use...

...P. T. Saheli; R. K. Rowe; E. J. Petersen; D. M. O'Carroll The new applications for carbon nanotubes (CNTs) in various fields and consequently their greater production volume have increased their potential release to the environment. Landfills are one of the major locations where carbon nanotubes...

... obtained from the above experiments, the potential impacts on an aquifer of the migration of polychlorinated biphenyls and chloride are compared for a composite liner in a hypothetical municipal solid waste landfill. It is shown that, with good construction quality assurance to limit the number of holes...

... and Miller 1996). Swell index tests were performed following the ASTM D5890 using deionised water, KCl and CaCl₂ solutions with concentrations varying from 0.001 to 0.5 mol/l. 31 12 2013 31 7 2014 1 8 2014 © 2015 Thomas Telford Ltd 2015 geosynthetics landfill...

... for municipal solid waste landfills. Interface direct shear tests were conducted at normal stresses representative of cover liners (10, 20 and 30 kPa) and bottom liners (100, 200 and 300 kPa). Tests were conducted at temperatures of 2, 20 and 40°C (cover liner) and 20 and 40°C (bottom liner); and at moisture...

... of GCL shear testing programs. North American practice is emphasized and discussions are focused primarily within the context of landfill bottom liner and cover systems. Conclusions and recommendations are provided with regard to GCL shear strength behavior and current GCL strength testing practice...

...A.H.I. Sia; N. Dixon ABSTRACT: Numerical modelling techniques can be used to examine the serviceability limit states of landfill side-slope lining systems in response to waste placement. A study has been conducted in which the variability of significant model input parameters have been investigated...

.... If the stability analyses show that the over-steepened areas will not be stable then the design should be revised before the contractor is allowed to take action. This article describes a case history that illustrates a number of important design, specification, bidding, and construction issues for landfill...

... coefficients at typical landfill temperatures based on Arrhenius-type relationships; and (4) an application of the estimated parameters to model a composite liner with 30 cm thick sand layer. The antioxidant diffusion coefficients ranged from 2.1 × 10⁻¹⁵ (at 26°C) to 1.6 × 10⁻¹³...

... in their study is lower than 5 × 10⁻⁴ m². Circular defect sizes often used in landfill design calculations are typically 10⁻⁴ m² (i.e. a diameter of 11.28 × 10⁻³ m) and 3.14 × 10⁻⁶ m² (i.e. a diameter of 2 × 10⁻³ m...

...F. Cartaud; P. Goblet; N. Touze-Foltz Leakage through composite liners used in landfills with a damaged geomembrane is analysed in this paper using a 2D numerical code. The main emphasis of this study is to assess the influence of the degree of saturation of the soil liner on the leakage rate...

... common materials and interfaces used in the construction of landfills and other facilities that incorporate GCLs as hydraulic barriers. Internal shear strengths are presented for unreinforced and needle-punched GCLs. Interface shear strengths are presented for needle-punched GCLs placed against smooth...

... testing programs. North American practice is emphasized and discussions are focused primarily within the context of landfill bottom liner and cover systems. Conclusions are drawn with regard to GCL shear strength behavior and current GCL strength testing practice, improvements for GCL strength testing...

...C.-N. Liu; R. B. Gilbert Tensile loads can develop in geosynthetic layers in landfills on steep base-liner side slopes during filling. These loads develop due to interim geometries during the filling sequence where the soils and/or waste materials placed on the side slope are supported partially...

... of perforations that minimize the stress concentrations. Two example calculations are presented to illustrate the proposed procedure for estimating the maximum stresses around the perforations. KEYWORDS: Pipe, Perforation, Stress concentration, Leachate collection, Landfill, Heap-leach pad. AUTHORS: R.W.I...