Geomembranes

What is Geomembranes

A geomembrane is very low permeability synthetic membrane liner or barrier used with any geotechnical engineering related material so as to control fluid (liquid or gas) migration in a human-made project, structure, or system. Geomembranes are made from relatively thin continuous polymeric sheets, but they can also be made from the impregnation of geotextiles with asphalt, elastomer or polymer sprays, or as multilayered bitumen recomposites. Continuous polymer sheet geomembranes are, by far, the most common.

Mechanical properties:
There are a number of mechanical tests that have been developed to determine the strength of polymeric sheet materials. Many have been adopted for use in evaluating geomembranes. They represent both quality control and design, i.e., index versus performance tests. tensile strength and elongation (index, wide width, axisymmetric, and seams) tear resistance impact resistance puncture resistance interface shear strength anchorage strength stress cracking (constant load and single point).