Geotextiles  Geotextile - planar polymeric material, woven or nonwoven, which is widely used in hydraulic engineering, civil engineering and road construction.
The main functions that perform geotextile:
Separation - separating the geotextile layer is used to prevent mixing of different types of granular materials related structural layers between themselves and with the soil subgrade, thus ensuring the design thickness of structural layers and their integrity.
Application of the separation geotextile layer is effective between the coarse-and fine-grained layers of pavement structures, between the design of pavement and subgrade soil, under paving slabs.
Filtering - works like a geotextile filter passing water and holding soil particles from the fans. The use of geotextile filter effectively between coarse-and fine-grained layers of clothing, in the systems of control soil erosion, to prevent the entry of small soil particles in drainage pipes.
 Reinforcement - geotextile acts as a reinforcing element within the soil ball to improve the bearing capacity and for the uniformity of load transfer to the base.
Protection - is used as a cushioning layer protecting geomembranes from mechanical damage.
Important material properties are:
 ease of stacking (rolls of material are small and lightweight, which reduces transportation and storage costs, as well as labor costs);
geotextile does not absorb water;
geotextile is resistant to natural acids and alkalis, bacteria and mold.
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