Through the application of Geogrid in many projects, its advantages are more and more recognized by the engineering community. Geosynthetics have the functions of anti filtration, drainage, isolation, reinforcement, anti-seepage and protection, among which the reinforcement function (especially the new geosynthetics) has been applied more and more in recent years, and its application field has gradually expanded. According to the performance and characteristics of geogrid, its main uses in the project are as follows:

(1) Foundation treatment. Geogrid can be used to strengthen the soft foundation, improve the bearing capacity of the foundation, control the settlement and uneven settlement.

(2) Reinforced earth retaining wall and revetment. In the reinforced earth retaining wall, the tension of Geogrid and the restraint of the lateral displacement of soil particles will greatly increase the stability of the soil itself.

(3) Geogrid is used to reinforce the retaining wall of railway and highway slope, bank revetment and some high slope projects.

With the coming of summer, geogrid is widely used in flood control embankment, cofferdams, inland ports and wharves and other water conservancy projects. Especially in urban embankment engineering, geogrid plays an important role. For embankment engineering filled with earth and stone, when the filling materials can not meet the requirements of slope protection stability, the reinforced soil can not only solve the stability requirements of slope protection, but also reduce the differential settlement of embankment body, so the engineering benefit is better.

Geogrid reinforced layer has a significant effect on preventing base crack reflection and prolonging pavement life.

Geogrid has the characteristics of high tensile strength, low elongation, no creep, good compatibility with asphalt mixture, stable physical and chemical properties, high temperature resistance, strong interlock and restriction. Its main function is to transfer the axial load uniformly and change the reflected crack stress from vertical direction to horizontal direction.

The use of geogrid can enhance the overall tensile strength of the asphalt mixture, effectively improve the stress distribution of the pavement structure, effectively delay and resist the reflection cracks of the asphalt concrete pavement caused by the base cracks of the pavement, so as to improve the service life of the pavement.

In geogrid, two-way geogrid is the most widely used geosynthetics, and also the fastest-growing geogrid products. However, the application scope of glass fiber geogrid and steel plastic geogrid is relatively small, and the development is slow. Plastic stretch grid is a kind of two-dimensional grid or three-dimensional grid with a certain height, which is made of polypropylene, polyethylene and other high polymer by thermoplastic or molding.

Two way geogrid plays an important role in infrastructure construction. In the construction of expressway, geotextile becomes an essential engineering material to protect subgrade, adjust pavement and increase road safety factor. In the construction of high-speed railway, geotechnical materials play a key role in ensuring the smooth operation of the train. In the water conservancy project, the two-way geogrid can protect the dike against seepage. In the landfill, the waterproof pad plays a role in preventing the infiltration of sewage.