With the development of highway, some new materials have been widely used in highway projects, and played a better economic and social benefits. The polymer mesh with square or rectangular shape formed by biaxial geogrid stretching can be divided into unidirectional tension and biaxial tension according to the different tensile directions when they are manufactured. It is to punch holes on the extruded polymer sheet (the raw materials are mostly polypropylene or high-density polyethylene), and then conduct directional stretching under heating conditions. Unidirectional geogrid, a macromolecule polymer as the main raw material, adding a certain anti UV and anti-aging AIDS, through unidirectional stretching, makes the original scattered chain molecules rearrange in a linear state, and then extruded into thin sheets, then punching regular holes, and then longitudinally stretched to form high strength geomembrane. In this process, the polymer is in a linear state, and a long elliptic network structure with uniform distribution and high node strength is formed. Using polypropylene plastic (PP) and special additives, the flame retardant and antistatic plastic belt for underground coal mine has been successfully developed by using plastic directional drawing, flame retardant and antistatic technology. Through the inspection of national quality inspection department, the mining plastic mesh fully meets the requirements and obtains the production license. The use of geogrid plays an important role in preventing uneven settlement of pavement, improving the bearing capacity of road, preventing damaged subgrade from reflecting schistosomiasis, prolonging the service life of road, and ensuring the quality of road construction.

At present, there are many manufacturers who produce Geogrids in China market. The performance analysis indexes and main uses of products are also different. According to the stress structure of products, geogrids can be divided into two-way geogrids and unidirectional geogrids. According to the material and cultural composition of products, geogrids can be divided into geogrids, synthetic fiber geogrids, polypropylene geogrids and steel plastic composite soils Work grid. In recent years, polypropylene unidirectional geogrid has been widely used in the design and construction of old road subgrade. It can get effective measures to prevent uneven settlement of subgrade, longitudinal cracks and reflection of cracks in old pavement.

Although the geogrid has good mechanical properties, only by mastering the correct construction method can the geogrid play a more effective role.

In production, the density of plastic mesh of geogrid is about 0.92. Compared with other geosynthetic research materials, it has its own unique performance and social effect. Glass fiber geogrid is a new type of excellent geotechnical base material for strengthening road surface and subgrade. The product is made of alkali free glass fiber filament as the main raw material, woven by unique warp knitting weaving technology and coated with special rubber. The polymer mesh with square or rectangular shape formed by biaxial geogrid stretching can be divided into unidirectional tension and biaxial tension according to the different tensile directions when they are manufactured. It is to punch holes on the extruded polymer sheet (the raw materials are mostly polypropylene or high-density polyethylene), and then conduct directional stretching under heating conditions. Unidirectional geogrid, a macromolecule polymer as the main raw material, adding a certain anti UV and anti-aging AIDS, through unidirectional stretching, makes the original scattered chain molecules rearrange in a linear state, and then extruded into thin sheets, then punching regular holes, and then longitudinally stretched to form high strength geomembrane. In this process, the polymer is in a linear state, and a long elliptic network structure with uniform distribution and high node strength is formed. In the process of coal washing, the broken mesh floats on the water surface of the city and is easy to be washed off. Therefore, it is often used as reinforcement material of reinforced soil structure or composite building material.

It is reported that the flat width of the geosynthetic geogrid in the bearing layer is in accordance with the design requirements, and the upper and lower parts of the geogrid are sealed with unarmed bad debris. The overlapping width of no less than 20cm in longitudinal direction is used. After laying the geogrid, manual filling, timely rolling, compaction of the remains after the specification of the upper layer is laid.

Technical management personnel through the story, in the flat under the bearing layer according to the design of a width can be laid engineering geogrid. The large diameter of rockfill embankment materials within 8 cm away from the geogrid layer shall not affect more than 6 cm. A light bulldozer or front loader shall be used for the first layer of geogrid system to compact along the development direction of the embankment axis and driving data, and the compaction thickness is obviously greater than 60 cm.

Geogeshan is composed of steel plastic reinforced belt formed by new technology. Because the surface of the product is pressed into regular coarse particles and laid in the replacement soil layer with great stress resistance and friction with the fill, the shear of foundation soil is limited, and the lateral extrusion and uplift are limited. Due to the high stiffness of reinforced soil cushion, it is conducive to the diffusion and more uniform transmission of the upper foundation load, and it is distributed to the underlying soft soil layer, which improves the bearing capacity of the foundation. The reinforced soil composite cushion formed by steel plastic reinforced geogrid is a flexible structure, which can absorb seismic energy well, so its seismic performance is good.