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Geogrids

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Geogrids are used almost/entirely for soil reinforcement. Their large aperture size limits their effectiveness as a filtration layer but their high tensile strength make them ideal for reinforcement applications such as base reinforcement and soft soil stabilization.

Geogrids are manufactured using application specific grades of polyolefin resins (high–density polyethylene or polypropylene). Depending upon manufacturing techniques and materials, geogrids can be designed to resist creep when subjected to high loads for long periods of time or resist high, short–term dynamic loads or moderate loads over longer periods of time.

Uniaxial geogrids are designed to/endure stress in one direction. The ribs of this variety of geotextile tend to be thicker and the apertures are long narrow slits. This variety of grid tends to be stronger than biaxial, but can only be applied in situations where stresses occur in a single direction (unless two uniaxial grids are placed in opposite directions).

Biaxial geogrids can take stresses in two directions and their apertures are more evenly dimensioned. They are useful in situations where stresses are applied in two directions, but don't have as much tensile strength in either direction as a uniaxial geogrid does in its direction of application.