Filament geotextile

2019-06-04 11:42 Source:原创 Writer: Steven
    Filament geotextile: Filament geotextile is polyester filament needle-punched non-woven geotextile, which does not contain chemical additives and is not heat treated. It is an environmentally friendly building material.

characteristic
    It can replace traditional engineering materials and construction methods, make construction safer, and contribute to environmental protection, and solve basic problems in engineering construction more economically, effectively and permanently.
    The filament geotextile has good mechanical function, good water permeability, corrosion resistance, anti-aging, isolation, filtration, drainage, protection, stability, reinforcement, etc. It can adapt to the uneven base layer and resist construction external forces. Destruction, creep is small, and the original function can still be maintained under long-term load.
    Filament geotextile characteristics:
    Strength - under the same weight specifications, the tensile strength of each direction is higher than other needle-punched nonwoven fabrics;
    Anti-ultraviolet light - has a very high UV resistance;
    Extremely high temperature resistance - high temperature resistance up to 230 ° C, maintaining structural integrity and original physical properties at high temperatures;
    Permeability and plane drainage - the geotextile is thick and needle-punched, with good flat drainage and vertical water permeability, and can maintain this performance after many years;
    Creep resistance - geotextile creep resistance is superior to other geotextiles, so it has good long-term performance. It is resistant to the erosion of common chemicals in the soil and to corrosion by gasoline, diesel and the like;
   Ductility--The geotextile has a good elongation under certain stress, so that it can adapt to the irregular surface of the unevenness;

Technical characteristics of filament geotextile: The thick geotextile can ensure the three-dimensional void ratio of geotextile, which is conducive to the realization of excellent hydraulic performance. The topping strength of geotextiles has great advantages, especially for retaining walls and embankments. The geotextiles have exceeded the national standards and are excellent geotechnical reinforcement materials.
    Application field
    (1) Reinforcement in backfilling of retaining walls, or panels used to anchor retaining walls. Construct a wrapped retaining wall or abutment.
    (2) Strengthen the flexible road surface, repair the cracks on the road, and prevent the road surface from reflecting cracks.
    (3) Increase the stability of gravel slope and reinforced soil to prevent soil erosion and freezing damage of soil during low temperature.
    (4) The isolation layer between the roadway and the roadbed, or the isolation layer between the roadbed and the soft foundation.
    (5) Separation, anti-filtration and reinforcement between artificial fill, rockfill or material field and foundation, separation between different frozen soil layers.
    (6) The filter layer of the initial upstream dam surface of the ash storage dam or tailings dam, and the filter layer of the drainage system in the backfill of the retaining wall.
    (7) The drainage layer around the drainage dark pipe or the gravel drainage dark groove.
    (8) Filter layers for water wells, pressure relief wells or diagonal pressure pipes in water conservancy projects.
    (9) Segregation of geotextiles between the road, airport, railway track slag and artificial rockfill and foundation.
    (10) The vertical or horizontal drainage of the earth dam is buried in the soil to dissipate the water pressure in the gap.
    (11) Drainage behind the anti-seepage geomembrane in the earth dam or earth embankment or in the lower part of the concrete facing.
    (12) Exclude water seepage around the tunnel, reduce the external water pressure on the lining and seepage water around each building.
    (13) Drainage of the base of the ground-based sports ground.
    (14) Roads (including temporary roads) are used to strengthen soft foundations in railways, embankments, earth-rock dams, airports, sports fields, etc.


    function
    1, isolation
    That is, the use of geotextiles to isolate building materials (such as soil and sand, sand and gravel, soil and concrete) with different physical properties (particle size, distribution, consistency and density). The two or more materials are not lost or mixed, and the overall structure and function of the material are maintained to enhance the load bearing capacity of the structure.
    2, filter
    When water flows from the fine-grained soil layer into the coarse-grained soil layer, the water flow is passed through the good gas permeability and water permeability of the needle-punched geotextile. And effectively intercept soil particles, fine sand, small stones, etc., in order to maintain the stability of water and soil engineering.
    3. Drainage
    Geotextile is a good water-conducting material, which can form a drainage channel in the soil structure to remove excess liquid and gas inside the soil structure.
    4, stiffened
    The geotextile is used to enhance the tensile strength and deformation resistance of the soil, and to enhance the stability of the building structure to improve the soil quality.
    5, protection
    Effectively spread, transfer or decompose the concentrated stress to prevent the soil from being damaged by external forces.
    6, closed
    The geotextile is combined with other materials (asphalt, plastic film) to form an impervious barrier in the soil layer. (Mainly used for road resurfacing, repair, etc.).




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