Filtration: This function of geosynthetics is similar to that of traditional sand filtration layers, allowing liquids inside the soil to pass through and be sent out while preserving soil and preventing the loss of upstream soil particles. For example, use a geotextile fabric to prevent soil particles from oozing into the drainage aggregate or drain while maintaining the drainage system working properly.
Drainage: The geosynthetic material acts as a drainage body inside the soil, allowing the water flow to be discharged from the low permeability soil along its interior. For example, geotextiles laid on the bottom of an embankment can be used to dissipate pore water pressure.
Isolation: This function means that geosynthetics can separate two coatings with different particle size distributions to avoid mixing and losing their integrity and structural integrity. Both geotextiles and geomembranes can provide isolation.
Reinforcement: Geosynthetics are placed inside the soil as reinforcement members, or geosynthetic materials are combined with soil to form a composite. The strength and deformation properties of the reinforced composite soil are compared with those of the unreinforced soil. Significant improvement.
Anti-seepage: Some geosynthetic materials have relatively low water permeability, which can prevent the flow and diffusion of liquid or gas, and exert anti-seepage or containment.
Protection: Also known as soil and water conservation, it refers to the reduction of soil loss caused by rainfall impact and surface water runoff by setting up protective measures for geosynthetic materials.