Construction and use of geotextiles

17-07-2019

Construction and use of geotextiles


Non-woven geotextile (polyester geotextile, non-woven geotextile), also known as geotextile, is a water-permeable geosynthetic material made of synthetic fibers by needle punching or weaving. The finished product is cloth-like, generally having a width of 4-6 meters and a length of 50-100 meters. Geotextiles are divided into woven geotextiles and non-woven geotextiles. Geotextile has excellent filtration, isolation, reinforcement and protection, high tensile strength, good permeability, high temperature resistance, antifreeze, aging resistance and corrosion resistance.


geotextile


Tools/raw materials


Needle-punched nonwoven geotextile


Method / step


1storage, transportation and handling of geotextiles


  Geotextile rolls should be protected from damage before installation. The geotextile rolls should be piled up in a place where there is no water accumulation, the height of the pile should not exceed four rolls, and the identification piece of the roll can be seen. Geotextile rolls must be covered with opaque materials to prevent UV aging. During the storage process, the integrity of the label and the integrity of the data should be maintained.


  Geotextiles must be protected from damage during transportation, including on-site transportation from material storage to work.


  Geotextiles that are physically damaged must be repaired. Geotextiles that are severely worn cannot be used. Any geotextile that comes into contact with leaking chemical reagents is not allowed to be used in this project.


2. The laying method of geotextile:


  2.1 Use artificial rolling; the cloth surface should be flat, and the deformation allowance should be left as appropriate.


  2.2 The installation of filament or short-staple geotextiles is usually done by lap joints, stitching and welding. The width of the stitching and welding is generally 0.1 m or more, and the overlap width is generally 0.2 M or more. Geotextiles that may be exposed for a long time should be welded or stitched


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