The main functions of geogrid

1.Enhance soil structure stability

• Core function: Improve overall bearing capacity and enhance stability

• Geogrid generates bite force with filler through its grid structure, improving soil shear strength and friction resistance;

• It can effectively prevent deformation, displacement or slippage of the structure after being stressed, and maintain long-term stability;

• In slope engineering, it can effectively prevent landslides and collapses.

2.Reinforcement and reinforcement

• Core function: Improve weak foundation and increase bearing capacity

• Geogrid has significant reinforcement effect and is suitable for soft foundation treatment, which can evenly disperse external loads;

• Reduce uneven settlement and total settlement, which is beneficial to the stability of subsequent pavement structure;

• Applied to key parts such as embankments, dams, and bridgehead jump sections to prevent structural cracking.

3.Disperse load and transfer stress

• Core function: reduce local stress concentration and improve load diffusion capacity

• Geogrid converts point load into surface load and transfers it evenly to the lower layer;

• Effectively reduce the damage to the roadbed or cushion caused by concentrated load;

• Especially critical in heavy traffic roads or airport runways.

4.Prevent structural damage and deformation

• Core function: constrain particle displacement and enhance structural rigidity

• Geogrids limit the lateral movement of fillers to form a "reinforced soil" complex;

• Reduce road subsidence, cracking, potholes and other problems caused by long-term use;

• It can play a role in tensile reinforcement and slip restriction on the back of slopes and retaining walls.

5.Anti-scouring and isolation function

• Core function: Extend the service life of the structure

• In water conservancy projects, river bank protection, and slope protection, prevent water from scouring the structure;

• Prevent the mixing of upper and lower layer materials, and play an effective isolation role;

• Combined with non-woven fabrics and other materials, it can improve the overall anti-erosion ability.

6.Improve drainage performance (used in conjunction with other materials)

• Core role: synergize drainage structure to keep the foundation dry

• Combined with geotextiles, drainage nets and other materials, it can form a drainage channel;

• Reduce groundwater pressure and capillary water rise, especially effective for soft soil treatment;

• Helps keep the road base dry and improve road durability.

How does geogrid help build a “sponge city”?

1.Enhance the stability of permeable pavement structure

• In sponge cities, permeable bricks, permeable concrete and other surface materials are widely used, and their lower structures need to have good load-bearing and drainage performance.

• Geogrids are placed between the gravel base layers to effectively restrict the lateral movement of aggregates and enhance the overall strength of the structure; 

• Prevent the road surface from sinking, cracking or partial collapse under long-term erosion by rainwater; 

• Extend the service life of permeable pavement and improve road safety and comfort.

2.Improve drainage and infiltration efficiency

• Geogrids can be combined with non-woven geotextiles and drainage nets to form a composite "drainage-reinforcement" system;

• Enhance the rainwater guidance and dispersion function of the structural layer and promote rapid infiltration;

• Prevent surface runoff concentration while reducing the burden on the downstream drainage system.

3.Assisting rainwater regulation and groundwater recharge

• Geogrids support the base structure to keep the seepage pores from being compacted;

• Providing good porosity is conducive to the storage and slow infiltration of rainwater in underground space;

• Effectively replenishing groundwater resources, restoring the urban hydrological cycle, and strengthening the "seepage, retention, storage, and purification" system functions.

4.Green infrastructure construction

• In the base of rain gardens, grass-planted ditches, ecological wetlands and other facilities, geogrids can stabilize the planting layer structure;

• Prevent plant roots from sinking and enhance soil shear resistance;

• At the same time, it can enhance the anti-scouring and anti-collapse performance of ecological boundaries such as slopes and revetments to ensure the long-term stable operation of green facilities.

5.Reducing the risk of urban waterlogging

• In the "storage and drainage" system of sponge cities, geogrids can improve the load and drainage performance of permeable pavements or squares;

• In conjunction with the infiltration and drainage pipe system, it can quickly divert heavy rainfall water flow and effectively reduce waterlogging pressure;

Comparison of Different Types of Geogrids in Permeable Pavement Applications