Geocell

Geocell is a three-dimensional geogrid manufactured from high-density polyethylene (HDPE) strips welded together at intersecting seams. These strips form a honeycomb-like structure when expanded. Geocells are typically filled with soil, sand, gravel, or concrete, which then interlocks within the cell walls. This confinement significantly increases the shear strength and stiffness of the infill material.

The primary function of geocells is to reinforce and stabilize soils. When filled, the geocell structure prevents lateral movement of the infill material, creating a stiff mattress that distributes loads over a wider area. This load distribution reduces stress on the underlying soil, preventing excessive settlement and improving the bearing capacity of weak or soft soils.

Applications for geocells are diverse and include road construction, railway tracks, airport runways, and slope stabilization. In road construction, they are used in subgrade and base layers to enhance pavement performance and durability, especially in areas with poor soil conditions. They are also employed in erosion control by vegetating the cells, providing a stable surface for plant growth on slopes and channels. The confinement provided by geocells helps to retain infill material and resist erosive forces. Their use can lead to reduced construction costs by minimizing the need for thick layers of conventional fill materials.