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What is non-woven geotextiles?

  • Author:Junqian Nonwoven
  • Source:Original
  • Release on:2017-10-19
Non-woven geotextile (polyester geotextile, non-woven geotextile), also known as geotextile, it is made of synthetic fibers through the needle or woven from the permeability of geosynthetics. Finished cloth for the cloth, the general width of 4-6 meters, the length of 50-100m.

Non-woven geotextiles have many advantages:
1) ventilation
2) filterability
3) Insulation
4) Water absorption
5) Waterproof
6) Scalability
7) not disheveled
8) feel good, soft
9) Light
10) elastic, can be restored
11) There is no direction of cloth
12) compared with the textile production of high productivity, production speed
13) low prices, can be mass production and so on.

The downside is:
1) compared with the textile fabric strength and durability is poor;
2) can not be washed like other fabrics;
3) fibers arranged in a certain direction, so easy to split from the right angle and so on.
Therefore, the improvement of the production method has been mainly focused on preventing the improvement of the division.

Industrial use of non-woven geotextile plant fiber used mainly cotton and jute, the main chemical composition of the material are cellulose. Cotton and jute as raw materials for the production of labor insurance clothing, packaging bags and military with the cloth is the early industry with non-woven geotextile, are simple low-end products. With the development of the national economy, plant fiber industry, the proportion of fiber will gradually decline. Replaced by synthetic fibers.

Chemical fiber refers to the chemical treatment and mechanical processing and the preparation of fiber, chemical fiber according to the use of raw materials into the different treatment methods can be divided into recycled fiber, synthetic fiber, non-woven geotextile.

Non-woven geotextiles, such as cellulose, a class of natural polymers as raw materials, chemical methods and the preparation of fiber, viscose fiber is regenerated cellulose fiber, almost all of the composition of cellulose. Early non-woven geotextile are filament, called viscose silk, can also be cut into short fibers, cotton viscose fiber and wool type viscose fiber, early weaving aerial parachute with silk often viscose wire raw material.

application:
(1) roads (including temporary roads) railway, embankment, earth dam, airport, sports field and other projects, to strengthen the weak foundation, while the role of isolation and filtration. River, river, lake, sea shore slope geotextile, but also to prevent water turbidity.
(2) reinforcement in backfill for retaining walls, or panels for anchoring retaining walls. Build a parcel or a bridge.
(3) to reinforce the flexible road surface, repair the cracks on the road to prevent the road reflection cracks.
(4) to increase the stability of gravel slope and reinforced soil to prevent soil erosion and low temperature soil damage.
(5) isolation between the road ballast and the roadbed, or between the roadbed and the base of the isolation layer.
(6) artificial fill, rock or material field and the foundation of the isolation layer, different frozen soil between the isolation. From the anti-filtration and reinforcement role.
(7) ash filter or tailings dam at the beginning of the upstream dam surface filter layer, retaining wall backfill drainage system filter layer.
(8) drainage around the dark tube or gravel drainage ditch around the filter layer.
(9) water conservancy project wells, relief wells or diagonal pipe filter layer.
(10) Isolated layers of geotextiles, such as roads, airports, railroads, and artificial rockfill.
(11) vertical or horizontal drainage within the dam, buried in the soil to dissipate the gap water pressure.
(12) Drainage of the bottom of the impervious geomembrane or the lower part of the concrete face in the earth dam or embankment.
(13) to exclude water leakage around the tunnel, to reduce the lining of the external water pressure and the surrounding water seepage of the building.
(14) drainage of foundation of artificial filling ground.