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Features Of Geocell Products:

Mar 31, 2022

1. It can expand and contract freely, and can be folded during transportation. During construction, it can be tensioned into a mesh and filled with loose materials such as soil, gravel, and concrete, forming a structure with strong lateral limitations and high stiffness.
2. Lightweight material, wear-resistant, chemically stable, resistant to light oxygen aging, acid and alkali, suitable for different soil conditions such as deserts.
3. High lateral restriction and anti slip, anti deformation, effective enhancement of the bearing capacity of the roadbed, and dispersed load effect.
4. Changing the geometric dimensions such as the height and welding distance of the geocell can meet different engineering needs.
5. Flexible expansion and contraction, small transportation volume, convenient connection, and fast construction speed. That is to say, once the load acts on the roadbed, a wedge-shaped active area will be formed below the load, which in turn compresses through the transition area, causing the passive area to bulge. That is to say, the bearing capacity of the foundation is determined by the shear force along the sliding line and the force in the active, transitional, and passive areas of movement. Not only can the true process of the above principles be clearly experienced on sand bases, but this type of model can also be found on soft foundation highways, but its formation rate is slower than that on sand. Even better roadbed materials cannot avoid lateral movement. Generally, the roadbed of highways is several meters above the ground, and it is not easy to absorb water and frost, but long-term settlement still exists. The reasons for this are partly due to rainwater infiltration, material loss, and base subsidence. The lateral displacement of materials towards both sides of the roadbed section under the long-term rolling and vibration force of wheel loads is undeniably another very important reason. Taking highways at all levels in our province as an example, it is evident that an "S" shaped groove has been pressed out of the road surface on the main carriageway of the road. Some highways are no exception, as the bumps of cars driving on the carriageway are significantly stronger than the feeling of passing on the overtaking strip, especially in the road bridge connection section (commonly known as "jumping at the bridge head"). This type of trench shaped roadbed settlement is a typical example of lateral sliding of roadbed materials.
There is no need to elaborate on the conventional methods for treating roadbed in engineering. The purpose is to improve the shear and friction resistance of foundation materials, reduce or delay the ability of foundation materials to move under load pressure or vibration. Therefore, there are inevitably many strict restrictions on material requirements in engineering. If the required materials cannot be obtained nearby, they need to be purchased externally, The cost of purchasing materials and transportation accounts for a significant portion of the entire project cost. By using a geocell, materials can be obtained on-site or nearby, and even materials that cannot be used under normal circumstances can be used, greatly reducing material procurement and transportation costs. Why is this happening? Schematic diagram of the bearing capacity of the geotechnical cell: Under concentrated load, the active zone 1 still transfers the force to the transition zone 2. However, due to the lateral limitations of the cell wall, the reaction force of adjacent cells, and the friction between the filler and the cell wall, the lateral resistance is formed, which suppresses the lateral movement tendency of the transition zone 2 and the passive zone 3, thereby improving the bearing capacity of the roadbed. After experiments, under the confinement of the cell, the apparent cohesion of medium dense sand can be increased by more than thirty times. Obviously, if the shear resistance of the roadbed material can be increased or the movement of the three areas can be suppressed, the effect of improving the bearing capacity of the foundation can be achieved, which is the limiting principle of the geocell. Geogrid, as a new type of synthetic material, began a large amount of research and development work in countries such as Europe and America in the late 1980s and early 1990s. Through experiments and on-site applications, it has been proven that it has great effectiveness in improving the resistance of general fill to dynamic loads and roadbed protection. In the early 1990s, China began the development and research of geotechnical chambers on the basis of absorbing advanced foreign experience, and made significant breakthroughs in the treatment of road bed diseases and the application of fixed loose media. With the further understanding of the characteristics of geotechnical cells, it has been found that they have irreplaceable advantages over other geotechnical materials (such as geotextiles, geomembranes, geogrids, geobags, geonets, etc.), making them have unique application prospects in many fields.

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