High Density Polyethelyne Geomembranes (HDPE), also referred to as Flexible Membrane Liners (FML) has increased usage as a result of growing concern over the contamination of valuable water resources.
The use of traditional porous liners such as concrete, admix materials, clays and soils have been proven unsuccessful in the prevention of fluid migration to subsurface soils and groundwater. On the other hand, seepage through non-porous types of liners, such as Geomembranes, has been nominal. In fact, when tested side by side against clay, fluid permeability through a synthetic geomembrane has been immeasurable.
Geomembranes are available in a variety of physical, mechanical and chemical resistance properties designed to meet the requirements of a wide range of applications. Different combinations of these properties exist in various geosynthetic lining materials to cover a wide spectrum of geotechnical applications and design.