Geogrids

GEOGRIDS

Geogrids belong to geosynthetics materials that fulfil a reinforcing function in a ground structure. They are formed by a flat polymer structure, namely by a system of mutually perpendicular longitudinal and cross drawn elements which can be bonded continually by welding, gluing or binding in the points of intersection thus usually creating apertures with sizes between 1 and 10 cm. This allows penetration of particles of soil/rock or other geotechnical materials through mesh apertures and formation of particle interlocking. It is good for this reinforcing particle interlocking effect when the grains are able to push through the mesh with at least a half of their volume into the substrate layer.
Geogrids are used both for reinforcement of non-cohesive, cohesive soils and formation made of coarse-grained materials.

Geogrids are classified as uniaxial and biaxial grids:
Uniaxial grid - strength in the machine direction of reinforcement is predominant
Biaxial grid - strengths in the cross and machine directions of the geogrid are equal