Deformations of a geosynthetic clay liner beneath a geomembrane wrinkle and coarse gravel

Geomembrane strains from coarse gravel and wrinkles in a GM/GCL composite liner

“…1, can be an effective barrier to contaminant transport in a solid waste landfill (e.g., Rowe et al, 2004Rowe et al, , 2007Rowe, 2005;Barroso et al, 2006;Dickinson and Brachman, 2006;Touze-Foltz et al, 2006;Bouazza and Vangpaisal, 2006;Bouazza et al, 2008;Saidi et al, 2008). To act as an effective barrier, physical damage to the geomembrane and GCL must be limited to allowable levels.…”

“…Dickinson and Brachman (2006) have reported how the GCL can become thinner for a GM/GCL liner with a wrinkle and beneath coarse gravel. They found that the thickness of the GCL decreased beside the wrinkle and increased beneath the wrinkle from bentonite extrusion towards the gap beneath the wrinkle.…”

“…However, Dickinson and Brachman (2006) focussed exclusively on the physical response of the GCL. It is the objective of this paper to report measured geomembrane deformations and strains of a GM/GCL composite liner (1.5-mm-thick high-density polyethylene GM on top of a needle-punched GCL) when buried beneath coarse gravel from physical tests.…”

Tension in geomembranes on landfill slopes under static and earthquake loading—Centrifuge study

“…Geomembranes are some of the most commonly used geosynthetics in landfill liner systems. They are laid above the clay liner and often followed by a geonet/geotexile and granular drainage layer (Jaisi et al, 2005;Dickinson and Brachman, 2006;Junqueira et al, 2006) as shown in Fig. 1(a).…”

Performance of a geocomposite liner for containing Jet A-1 spill in an extreme environment

“…Rowe and Orsini, 2003;Cartaud et al, 2005a, b;Lake and Rowe, 2005;Rowe, 2005;Barroso et al, 2006;Bouazza and Vangpaisal, 2006;Touze-Foltz et al, 2006;Dickinson and Brachman, 2006) however to-date there has been very little research relating to the use of composite liners in extreme climates. Brevoort Island (located in northern Canada near Baffin Island) is a former Pole Vault radar early warning site where it has been necessary to contain spills and leaks of Arctic diesel (jet fuel) prior to possible future remediation.…”