Geogrid is currently the most widely used geogrid product, divided into single and bidirectional geogrid double grid. Punch holes in the extruded polymer sheet, and then stretch it longitudinally (along the direction of the sheet) to make a unidirectional geogrid; on this basis, stretch it in the direction perpendicular to its length to make a bidirectional geotextile Grille. The specifications and varieties of plastic geogrids are abundant, and their basic properties are as follows:
1. Mechanical properties: During the manufacturing process, the plastic geogrid undergoes directional stretching, so that the polymer molecules are arranged along the stretching direction, which strengthens the coupling force between the molecular chains and greatly improves its tensile strength, even It is stronger than mild steel, but the elongation is very small. The interlocking force of the earth and stone materials in the grid increases, and the friction coefficient between them also increases significantly.
2. Durability: Due to the addition of aging materials such as carbon black to the plastic geogrid, it has good acid resistance, alkali resistance, corrosion resistance, and aging resistance.
3. Temperature resistance: Due to the tensile effect, the temperature resistance of its plastic geogrid is improved.
4. Construction performance: The plastic geogrid is a light weight and flexible plastic plane mesh material, which is easy to cut and link on site (it can be used for polyethylene rope or connecting rod link), can also be overlapped, and Assembled into the required shape on site, the plastic geogrid has less influence on bending during construction, so the construction is simple and does not require special construction machinery and professional technical personnel.