Geotextiles provides effective stabilization and critical subsoil / base course separator for paved surfaces and also stabilize and retain aggregate for unpaved surfaces , such as parking, loading lots, roads, airport runways, …etc.
Subgrade stabilization has always been a problem to the railroads. Due to heavy dynamic load resulting from train traffic, the stony ballast is very often contaminated by rising fine particles from the underlying soil, which leads to deformation of the ground which eventually causes a gradual decrease in the bearing capacity of the upper structure. Geotextiles used in railroad stabilzation reduce maintenance and extend the track’s service life. They also prevent the loss of costly ballast , reduce rail deformation , and increase the ballast’s loadbearing capacity.
Embankments on soft ground
When embankments are constructed over weak soil such as soft clays, there can be problems with short- term instability in the form of deep- seated rotational slipping or transverse spreading of the embankment. Before the advent of geotextiles, these problems were overcome by building the embankment with very flat side slopes .A much more economic solution can be achieved by using a basal layer of geotextile reinforcement, placed over the original formation before placing of embankment fill. The geotextile will impart tensile strength to the base of the fill, thereby resisting lateral spreading, rotational failure of the underlying soft ground.