How do you know which textured geomembrane to select?
How you select a geomembrane largely depends upon the type of application in which they are being used.
The amount of interface friction between a geomembrane and the layer in contact with, soil or other geotextiles requires different types of surfaces (smooth or textured) for different applications.
Installation of a geomembrane as well as the product´s mechanical properties is heavily influenced by the method of texturing.
GSE® LL geomembranes are co-extruded geomembranes, applied with a surface texture with molten polyethylene mixed with hot air. This process is carefully undertaken to ensure no reduction of the mechanical properties.
Thus, applications demanding high multiaxial strength, puncture resistance and other mechanical properties with a textured surface could best use a GSE LL geomembrane.
For applications requiring a combination of a geomembrane and a geotextile, a geosynthetic clay liner, a drainage geocomposite and soil material, GSE LL geomembranes are a good choice, thanks to the high frictional forces that can be developed even with a bare minimum asperity. Higher asperity alone means higher stress concentrations and, thus, an irregular stress concentration. Such additional stresses can be avoided in the case of a GSE LL geomembrane.
For applications needing different interface friction on either side of the geomembrane, GSE LL allows you to adjust the quantity of texturing on either side.
Because direct welding between two geomembranes is possible, time, money and labor can be saved from the extra grinding that might otherwise be necessary. Moreover, the texturing of GSE LL means the product can be laid flat over large surfaces, a common consideration in the installation sector.
