When the water flows from the fine soil layer to the coarse soil layer, the polyester staple fiber needled geotextile with good air permeability and water permeability is used to make the water flow through and effectively intercept the soil particles, fine sand and small stones, so as to maintain the stability of the water and soil engineering. Drainage polyester staple fiber needled geotextile has good hydraulic conductivity. It can form a drainage channel inside the soil and discharge the excess liquid and gas in the soil structure.

Reinforcement uses polyester staple fiber needled geotextile to enhance the tensile strength and deformation resistance of soil, enhance the stability of building structure, and improve the quality of soil. When the protective water flow washes the soil, the steel plastic geogrid manufacturer can effectively diffuse, transfer or decompose the concentrated stress, prevent the soil from being damaged by external forces, and protect the soil.

According to the introduction of geogrid production line equipment, geogrids are divided into four categories: Plastic geogrids, steel plastic geogrids, glass fiber geogrids and polyester warp knitted polyester geogrids. The grid is a high two-dimensional grid or three-dimensional grid molded from polypropylene or PVC and other polymers. It is called geogrid and is mainly used for civil engineering.

The glass fiber geogrid has high strength and rigidity. Adding it into the asphalt concrete structure can comprehensively improve the strength and road performance of pavement materials, and change the stress distribution of pavement structure. The research and Analysis on its action mechanism show that setting Geogrid on the surface of old cement concrete slab can change the stress state of asphalt layer under vehicle load and temperature, and greatly reduce the stress concentration of asphalt layer at the joint, Thus, the generation and development of reflection cracks are hindered.

Setting geogrid can increase the overall stiffness of pavement, reduce the surface deflection of asphalt layer, and improve the high-temperature rutting resistance of asphalt overlay. The high-strength geogrid does not rely on its own large deformation to diffuse the stress. Its crack prevention function is essentially an isolation function. It separates the stress concentration area at the tip of the belt joint (crack), and the geogrid with high strength bears a large tensile stress, thus hindering the rapid expansion of the crack.