HDPE Geocell is made of a new type of high-strength geosynthetic material, which is very popular at home and abroad. It meets the implementation requirements of GB/T 19274-2003 or ASTM D standards, and is convenient to fold and transport. During construction, the geocell can be stretched into a mesh and emitted into a three-dimensional honeycomb grid. Soil, gravel, concrete or other granular materials are considered structures with strong lateral restraint and high rigidity.
Geocell is suitable for a variety of Roadbed Construction：
1. Handling half-filled and half-cut subgrade
When building an embankment on a slope where the natural slope of the ground is steeper than 1:5, the base of the embankment should be dug. When the width of the steps should not be less than 1M, when the road is built or rebuilt in phases and the road is widened, the connection between the new and old subgrade fill slopes should be opened. For digging steps, the width of high-grade highway steps is generally 2M, and geocells are laid on the horizontal surface of each step, and the geocell's own elevation confinement reinforcement effect is used to better solve the problem of uneven settlement.
2. Roadbed in sandy areas
The low embankment should be the main roadbed in the sandy area, and the filling height is generally not less than 0.3M. Due to the professional requirements of the low roadbed and heavy load-bearing construction of the roadbed in the sandy area, the use of geocells can limit the loose filler. In the limited height, the subgrade has high rigidity and strength to withstand the load stress of large vehicles.
3. Filling and reinforcement of subgrade behind abutment
The use of geocells can better achieve the purpose of reinforcement of the abutment back. Sufficient friction can be generated between the geocells and the filler, which can effectively reduce the uneven settlement between the subgrade and the structure, and finally can effectively alleviate the "abutment jump" Early impact damage to the bridge deck caused by “car” disease.
4. Roadbed in permafrost regions
In the construction of filled roadbed in permafrost areas, the minimum filling height should be reached to prevent the occurrence of tumbling or the lowering of the upper limit of the frozen layer, resulting in excessive settlement of the embankment. The unique vertical reinforcement effect of the geocell and the effective implementation of the overall confinement can ensure the minimum fill height in some special sections to the greatest extent, and make the fill have high-quality strength and rigidity.
5. Loess collapsible roadbed treatment
When expressways and first-class highways pass through collapsible loess and loess sections with good compressibility, or when the allowable bearing capacity of the foundation of a high embankment is lower than the pressure of the combined load of vehicles and the self-weight of the embankment, the subgrade should also be adjusted according to the bearing capacity requirements. After processing, the superiority of the geocell is undoubtedly evident.
6. Saline soil and expansive soil
The highways, first-class highways, shoulders and slopes built with saline soil and expansive soil are all reinforced. The facade reinforcement effect of the cell is the most excellent one of all the reinforcement materials, and it has excellent corrosion resistance It can fully meet the requirements of constructing highways in saline soil and expansive soil.