1.Separation
Make the two or more materials do not lost, not mixed, and maintain the overall structure and function of the material.
2.Filter
When water flows from the fine soil layer to the coarse soil layer, the water flows through, and effectively intercepts soil particles, fine sand, small stones, etc.
3.Drainage
It can drain excess liquid and gas from the soil structure.
4.Reinforcement
Using needled geotextile to enhance the tensile strength and deformation resistance of soil, enhance the stability of building structure.
5.Protection
When the soil is scoured by water flow, the concentrated stress is effectively diffused, transmitted or decomposed to prevent the soil from being subjected to external force.
