There are many applications for the use of geotextiles.
(+1) Cushioning - effective and low cost protection to membrane from damage by sharp objects.
(2) Drainage - allows subsurface water to pass to drain system while preventing soil from clogging system.
(3) Separation - applied to soft or saturated subgrade, prevents aggregate and ballast from mixing into subgrade.
(4) Filtration - geotextiles can provide collection and transfer of liquids and gases that build up and accumulate beneath geomembranes.
(5) Reinforcement - geotextiles can help relieve hydrostatic pressure beneath hard armor such as highways.
