What are GeoSynthetics? In all, geosynthetics, perform five major functions: separation, reinforcement, filtration, drainage and moisture barrier. There are six families of geosynthetics: geotextiles, geogrids, geonets, geomembranes, geocomposites and "geo-others." Geotextiles form the largest group of geosynthetics.

A geomembrane is very low permeability synthetic membrane liner or barrier used with any geotechnical engineering related material so as to control fluid (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 geocomposites. Continuous polymer sheet geomembranes are, by far, the most

Geogrid is a flexible mesh that is used to create a reinforced coherent mass behind the retaining wall by stabilizing the soil. The stability of the soil depends greatly on the friction angle it contains. The friction angle is often referred to as the shear strength of the soil.