Geogrid is a major geosynthetic material with unique properties and efficacy compared with other geosynthetics. It is often used as a reinforcing material for reinforced soil structures or a reinforcing material for composite materials.
Geogrids are divided into four categories: plastic geogrids, steel-plastic geogrids, fiberglass geogrids and polyester warp-knitted polyester geogrids. The grid is a two-dimensional grid or a three-dimensional grid screen with a certain height made of polypropylene, polyvinyl chloride and other macromolecular polymers by thermoplastic or molding. When used in civil engineering, it is called a geotechnical geogrid.
Plastics Geogrid:
The plastic geogrid is stretched to form a square or rectangular polymer mesh, which can be uniaxially stretched and biaxially stretched according to the different stretching directions during manufacture. It punches holes on the extruded polymer sheet (mostly polypropylene or high-density polyethylene), and then performs directional stretching under heating conditions. The uniaxially stretched grid is only made by stretching along the length direction of the sheet; the biaxially stretched grid is made by continuing to stretch the uniaxially stretched grid in the direction perpendicular to its length.
Mining Gegorid:
Mining geogrid is a kind of plastic mesh for underground coal mines. It is made of polypropylene as the main raw material. After being treated with flame retardant and antistatic technology, it is a "double-resistance" plastic mesh with an overall structure formed by biaxial stretching. The product is easy to construct, low cost, safe and beautiful.
The steel plastic geogrid:
The steel plastic geogrid is made of high-strength steel wire (or other fibers), specially treated, and polyethylene (PE), and other additives are added to make it a composite high-strength tensile strip through extrusion, and the surface has rough pressure pattern, it is a high-strength reinforced geotextile belt. From this, the single belt is woven or sandwiched at a certain distance vertically and horizontally, and its junction is formed by welding its junction with a special strengthening bonding fusion welding technology, which is a reinforced geogrid.
Fiberglass Geogrid:
Fiberglass geogrid is made of glass fiber and a mesh structure material made by a certain weaving process. In order to protect the glass fiber and improve the overall performance, it is a geocomposite material made by a special coating process. The main components of glass fiber are: silicon oxide, which is an inorganic material. Its physical and chemical properties are extremely stable, and it has high strength, high modulus, high wear resistance and excellent cold resistance, no long-term creep; thermal stability Good performance; the mesh structure makes the aggregate interlock and limit; improve the load-bearing capacity of the asphalt mixture. Because the surface is coated with special modified asphalt, it has dual composite properties, which greatly improves the wear resistance and shear capacity of the geogrid.
Polyester Geogrid:
Polyester geogrid uses high-strength polyester fiber as raw material. The warp knitting directional structure is adopted, and the warp and weft yarns in the fabric are not bent with each other. The intersections are bound and combined with high-strength fiber filaments to form a firm joint, giving full play to its mechanical properties. High-strength polyester fiber warp-knitted geogrid The grid has high tensile strength, small elongation force, large tear resistance strength, small difference in vertical and horizontal strength, ultraviolet aging resistance, wear resistance, corrosion resistance, light weight, strong interlocking force with soil or gravel, and is suitable for reinforcing soil. Shear resistance and reinforcement improve the integrity and load capacity of the soil, and play a significant role.