Geotextile Classification and Geotextile Types
Date:2014-07-07   Viewers:   Size: 16px  14px  12px

Geotextiles are used in civil engineerings such as railway, highway, water conservancy, electric power, metallurgy, mining, construction, military,
Harbor areasGeotextile has the functions of drainage, filtration, isolation, reinforcement, protection, seepage and other effects.

With the arrival of China’s infrastructure construction peak, geotextiles are facing unprecedented opportunities, including the construction of rivers
farmland water conversition, road construction, railway construction, airport and port construction, all of these projects offer unlimited development opportunities to geotextile industry in China.

1 geotextile fibers
Geotextile can be produced by fibers such as carbon fiber, glass fiber, aramid fiber, Steel, copper and so on. The current production of geotextiles is the main raw material used in natural cotton and hemp fibers and chemical fiber polyester , Polypropylene, nylon, polyvinyl alcohol and so on.

geotextile fiber
2. Geotextile Classification
There are a variety of geotextiles, their classification methods are also varied.

2.1 By permeability
a. permeable geotextile is mainly used in the construction of embankment dams the rear, coastal and dams corrosion engineerings, hydraulic engineerings and bridge.
b. impermeable geotextile is mainly used in the construction of dams and waste dumps.

2.2 By Fiber Length
a. Staple fiber geotextile. geotextile produced by Staple fiber.
b. Filament geotextile. Under the same conditions, filament nonwoven goetextile has higher tensile strength than that of staple fiber geotextile. filament geotextile has large tear strength and modulus than that of staple fiber geotextile.

2.3 Type of raw materials
a. Natural Fiber
Natural fiber geotextile include cotton and hemp (commonly jute) geotextile. Cotton geotextile Cloth was poured asphalt used in road reinforcement material, Jute geotextile was laid to protect vegetation on airport runways and ramps
b Chemical Fiber
Chemical fiber geotextile is a synthetic geotextile.Its main varieties are: polyester geotextile, polypropylene geotextile, polyvinyl alcohol geotextile. Almost all chemical fiber are suitable for synthetic geotextiles.

2.4 By the shape
a. Planar geotextile
Plane geotextile material can be used as ground reinforcement, interface separation material, drainage filter material, seepage.It is used as filteration and slope protection materials.
b. Tubular geotextile
Geotextile tube is mainly used for drainage and filtration, can also be manufactured water-filled building.
c. Baggy geotextile
Bag-like material formed mainly from the accommodating role to fill rocks, concrete blocks or sand.
Dams to prevent erosion, or play a role in any template in the concrete forming technology.

2.5 Method of  Geotextile Production

a. Knitted geotextiles

Knitted geotextiles
Knitted geotextiles by a string of one or more yarns circle from each other, rarely used geotextile. But with directional fabric structure (D SF) geotextile advent, people gradually changed his views. DSF fabric comprises uniaxial fabric (vertical warp, weft link), biaxial fabric (warp and weft vertical, linked by a join line) and multi-axial fabrics.

b. Nonwoven geotextiles

geotextile nowoven fabric
nonwoven geotextiles are mainly spunbonded, needle-punched,hot-melt and adhesive type geotextile, it has lower strength and initial modulus,but good elongation at break. Nonwoven geotextile has good elasticity, good frictional properties, porosity and uniform, high filtration efficiency.
Non-woven geotextile features simple production process, high labor efficiency, low cost, multi-process changes

c.Woven geotextile

woven geotextile fabrics
woven geotextile is composed of two groups of filaments or flat woven into the fabric wear, a variety of single-layer woven geotextile (also known as anti-geotextile cloth), double layer geotextile (also known as geotextile mold cloth bags) and woven fabric impermeable.






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