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Geotextile when applied in engineering construction, usually undergoes third-party testing to ensure the quality of geotextile is qualified. But for people who do not often come into contact with test equipment, they do not quite understand the relevant testing of geotextiles. Therefore, here we have organized it, which can provide reference for geotextile testing.
1. Cone drop tester, to determine the tear strength of geotextile materials.
2. Cross permeability tester, used to measure normal magnetic permeability called dielectric constant.
3. Dry sieve test device, used for relative comparison between geotextiles.
4. Geotextile permeameter, meets geotextile water permeability test requirements.
5. Gradient ratio tester, used to directly measure the clogging possibility of geotextiles.
6. Hydrodynamic sieve test device, used to determine the porosity of the geotextile under study.
7. Plane permeability tester, suitable for drainage applications.
8. Interface friction measuring instrument, according to the designer's requirements, evaluates the "frictional resistance" and "pull-out resistance" of soil reinforcement materials under shear rate and drainage conditions.
9. Large-scale pull-out test device for geosynthetic materials, measures the interface friction between geosynthetic materials and soil.
10. Long-term flow tester, used to determine the long-term flow capacity of geotextile.
11. Thickness gauge, used to measure the thickness of geosynthetic materials/reinforcement materials, with an accuracy of 0.001 mm, thickness up to 25 mm.
Different geotextiles have completely different performance attributes. Therefore, before testing, we need to first understand the relevant standards of geotextiles, and then conduct geotextile testing after parameter confirmation. Also, geotextile sampling can be divided into two types: witnessed sampling and self-sampling, which is a relatively important process in testing.
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