Geogrid is a main geosynthetics, which has unique performance and efficacy compared with other geosynthetics. It is often used as a reinforcing material for reinforced earth structures or composite materials.

Geogrids are divided into plastic geogrids, steel-plastic geogrids, glass fiber geogrids and polyester warp-knitted polyester geogrids.

Grille is a two-dimensional mesh or three-dimensional mesh screen with a certain height made of polypropylene, polyvinyl chloride and other high molecular polymers through thermoplastic or molding. When used in civil engineering, it is called geogrid.

Square or rectangular polymer network materials formed by stretching can be divided into uniaxial stretching and biaxial stretching according to the different stretching directions in the manufacturing process.

It is made by punching holes in the extruded polymer sheet (mostly made of polypropylene or high-density polyethylene) and then directionally stretching it under heating conditions. The unidirectional stretching grid is made by stretching only along the length direction of the plate; Bidirectional stretching grid is made by continuously stretching the grid in one direction and then stretching the grid in the direction perpendicular to its length.

Bidirectional plastic geogrid

In the process of manufacturing plastic geogrids, polymers will be rearranged and oriented with the process of heating and stretching, which will enhance the binding force between molecular chains and achieve the purpose of improving their strength.

Its elongation is only 10% ~ 15% of the original board. If anti-aging materials such as carbon black are added to the geogrid, it will have better durability such as acid resistance, alkali resistance, corrosion resistance and aging resistance.