1: Isolation
The construction materials with different physical properties (particle size, distribution, consistency and density, etc.) are treated with polyester staple fiber needle punched geotextiles
Materials (such as soil and sand, soil and concrete) shall be isolated. Keep two or more materials free from loss and mixing, and keep materials
The overall structure and function of the material strengthen the bearing capacity of the structure.
2: Filtration (reverse filtration)
When the water flows from the fine soil layer to the coarse soil layer, the polyester staple fiber needle punched geotextile has good air permeability and water permeability to make the water flow
Through, effectively intercept soil particles, fine sand, small stones, etc. to maintain the stability of water and soil engineering.
3: Drainage
Polyester staple fiber needle punched geotextile has good water conductivity, which can form drainage channels inside the soil body
The residual liquid and gas are discharged.
4: Stiffening
The polyester staple fiber needle punched geotextile is used to enhance the tensile strength and deformation resistance of the soil, enhance the stability of the building structure
Improve soil quality.
5: Protection
When water washes the soil mass, it can effectively diffuse, transmit or decompose the concentrated stress, prevent the soil mass from being damaged by external forces, and protect the soil.
6: Puncture prevention
Combined with the geomembrane, it becomes a composite waterproof and anti-seepage material, playing the role of puncture prevention.
High tensile strength, good permeability, air permeability, high temperature resistance, freezing resistance, aging resistance, corrosion resistance, and moth resistance.
Polyester staple fiber needle punched geotextile is a widely used geosynthetic material. Widely used for reinforcement of * * * subgrade and highway pavement
Maintenance, sports hall, dam protection, isolation of hydraulic structures, tunnel construction, coastal beach, reclamation, environmental protection and other projects.
The geotextile has the functions of filtering, drainage, isolation, reinforcement and protection, and has the characteristics of light weight, high tensile strength, good permeability, high temperature resistance, freezing resistance, aging resistance and corrosion resistance. The application of geosynthetics originated in the 1950s. The geotextile in China is one of the Eighth Five Year Plan. In 1998, China issued the standard Geosynthetics Short Fiber Needle punched Nonwoven Geotextiles (GB/T17638-1998). At present, geotextiles have been widely used in many fields.
Geotextiles mainly include the following three series:
1、 Needle punched non-woven geotextile, with the specification of 100g/m2 to 600g/m2, is made of polyester staple fiber or polypropylene staple fiber by needle punching. It is mainly used for slope protection of river, sea and lake embankments, reclamation of land from the sea, wharf, ship lock flood prevention and rescue works, and is an effective way to achieve water and soil conservation and prevent piping through back filtration.
2、 Needle punched non-woven fabric and PE film composite geotextile have specifications of one cloth, one film, two cloth and one film. The main raw material is polyester staple fiber needle punched non-woven fabric with a wide width of 4.2 meters. PE film is compounded and mainly used for seepage prevention. It is applicable to * *, expressway, tunnel, subway, airport and other projects.
3、 Non woven and woven composite geotextiles, with varieties of nonwoven and polypropylene filament woven composite, nonwoven and plastic woven composite, are suitable for foundation reinforcement and infrastructure engineering facilities for adjusting permeability coefficient.
characteristic:
It is light in weight, low in cost, corrosion resistant, and has excellent properties such as inverted filtering, drainage, isolation, and reinforcement.
Purpose:
Widely used in water conservancy, power, mine, highway, * * * and other geotechnical projects:
l、 Filter material for soil layer separation;
2. Drainage materials for mineral processing of reservoirs and mines, and drainage materials for foundation of high-rise buildings;
3. Anti scouring materials for river embankments and slope protection;
4. * * *. Reinforcing materials for subgrade of highway and airport runway, and reinforcing materials for road construction in marshland;
5. Anti frost and anti freezing thermal insulation materials;
6. Anti cracking materials for asphalt pavement.
