Rizhao Roadbed Plastic Grating Specifications & Prices, Roadbed Plastic Grating Renovation & Expansion Grating, Plastic Grating Price
Polymers formed into square or rectangular mesh through stretching can be either unidirectional or bidirectional, depending on the stretching direction during manufacturing. They are created by punching holes in polymer sheets (typically made from polyethylene or high-density polyethylene) that have been extruded.
Then, directional stretching is performed under heating conditions. Meanwhile, geogrid is a lightweight, somewhat flexible plastic plane mesh material that is easy to cut and connect on-site, can also be overlapped, and is simple to install without the need for special construction machinery or technicians. Bi-directional stretched grids are made by further stretching the uni-directional stretched grids perpendicular to their length. Due to the reorientation of the polymer macromolecules during the heating and extension process in the manufacturing of plastic geogrids, the intermolecular bonding force is strengthened, achieving the purpose of increasing its strength. Its elongation rate is only 10% to 15% of the original sheet material. It has good thermal stability; the mesh structure allows for aggregate interlocking and restraint; and improves the load-bearing capacity of asphalt mixtures.
Due to the special modified asphalt coating, the geogrid exhibits dual composite properties, significantly enhancing its wear resistance and shear strength. Adding carbon black or other anti-aging materials to the geogrid imparts excellent acid, alkali, corrosion, and anti-aging resistance. The glass fiber geogrid is a woven mesh material made of glass fiber, processed through a special coating technique to protect the fibers and improve overall performance, resulting in a geosynthetic composite material.
The main components of glass fiber are silicon dioxide, an inorganic material with highly stable physical and chemical properties. It boasts great strength, high modulus of elasticity, excellent wear resistance, and superior cold resistance without long-term creep. Unidirectional拉伸格栅 is produced by stretching only along the length of the sheet. Sometimes, it is combined with self-adhesive pressure-sensitive adhesive and surface asphalt impregnation treatment to form a tight bond between the格栅 and asphalt pavement. Due to the increased interlocking force of soil and stone materials within the geogrid, the friction coefficient between them significantly increases (up to 0.8-1.0). The pull-out resistance of the geogrid embedded in the soil is significantly enhanced due to the strong frictional咬合力 between the geogrid and soil mass, making it an excellent reinforcing material.
