What is the role of geotextile?
Geotextile is a permeable geosynthetic material produced by weaving technology in a cloth shape, also called geotextile. Its main features are light weight, good overall continuity, easy construction, high tensile strength and corrosion resistance. Geotextiles are divided into woven geotextiles and non-woven geotextiles. The former is woven from monofilament or multiple strands, or is woven from flat filaments cut from film; the latter is randomly spread by short fibers or spun filaments. The batt is formed by mechanical entanglement (needling), thermal bonding, or chemical bonding.
What is the role of geotextile?
1). Isolation between the same materials:
Between subgrade and foundation; between railway subgrade and ballast; between landfill and gravel base; between geomembrane and sandy drainage layer; between foundation and embankment soil; between foundation soil and foundation piles; sidewalk , Under the parking lot and sports field; between the filter layer and drainage layer with poor gradation; between different areas of the earth dam; used between the new and old asphalt layers.
2). Reinforced and protective materials:
Used on soft foundations of embankments, railways, landfills and sports fields; used to make geotechnical bags; used to reinforce embankments, earth dams and slopes; used to reinforce foundations in karst areas; improve the load-bearing capacity of shallow foundations Strength; Reinforce the pile cap; prevent the base soil from piercing the geomembrane; prevent the impurity or stone layer in the landfill from piercing the geomembrane; due to high friction resistance, it can lead to better composite geomembrane The slope is stable.
3). Anti-filtering:
Under the gravel base of roads and airport roads or under railway ballast; around gravel drainage; around underground perforated drainage pipes; under landfills where leachate is generated; protect geonets to prevent soil particles from intruding; protection Geocomposite material prevents soil particles from intruding.
4). Drainage:
As the vertical and horizontal drainage system of the earth dam; the horizontal drainage of the pre-compressed embankment bottom of the soft foundation; the barrier layer for the rise of underground capillary water in the frost-sensitive area; the capillary barrier layer for the flow of saline and alkaline liquid in dry land; as the base layer of the hinged concrete block slope .
