Geogrids are divided into four categories: plastic geogrids, steel-plastic geogrids, fiberglass geogrids and glass fiber polyester geogrids.
(1) Plastic geogrid
During the manufacture of the plastic geogrid, the high molecular polymer will rearrange and align with the heating and extension process, which strengthens the bonding force between the molecular chains and achieves the purpose of improving its strength. Its elongation is only 10% to 15% of the original plate. If anti-aging materials such as carbon black are added to the geogrid, it can have good acid resistance, alkali resistance, corrosion resistance and aging resistance.
Biaxial geogrid
Biaxial geogrid is made of high molecular polymer through extrusion, plate forming, punching process and then stretched longitudinally and transversely. The material has great tensile strength in the longitudinal and transverse directions, and this structure can also provide a more effective force bearing and spreading ideal interlocking system in the soil, suitable for large-area permanent bearing foundation.
Uniaxial Geogrid
The uniaxial geogrid is formed by extruding a high molecular polymer into a thin plate and then punching a regular hole network, and then stretching it longitudinally. In this process, the high molecular weight is made into a directional linear state and forms a uniform distribution and high node strength. Long oval net-like integral structure. This structure has quite high tensile strength and tensile modulus.Provides the soil with an ideal interlocking system of force bearing and spreading. The product has high tensile strength (>150Mpa), adapts to various soils, and adopts advanced reinforcement materials.
(3) Steel-plastic geogrid
The steel-plastic geogrid is made of high-strength steel wire (or other fibers), which is 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 geotechnical belt. From this single belt, weaving or clamping arrangement at a certain distance vertically and horizontally, and welding its junctions with special strengthening bonding fusion welding technology to form a reinforced geogrid.
(4) Fiberglass geogrid
Fiberglass geogrid is made of glass fiber and made of mesh structure material by a certain weaving process. In order to protect the glass fiber and improve the overall performance, it is a geotechnical composite material made of a special coating process. The main components of glass fiber are: silica, 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 network structure makes the aggregate interlock and limit; improves the load-bearing capacity of the asphalt mixture. Because the surface is coated with special modified asphalt, it has double composite properties, which greatly improves the wear resistance and shearing capacity of the geogrid.
