Types of Geogrid and Their Functions in Construction

Geogrid is a geosynthetic material in sheet form with frame-like openings, which acts as reinforcement to strengthen soil structures. The types of geogrid have different apertures, from square and oval to other shapes.

Geogrid installation involves laying it on the ground surface and then covering it with fill material. The fill enters the openings between the geogrid ribs and interlocks with them, producing high frictional resistance.

Types of Geogrid

In general, there are 3 types of geogrid, distinguished by the shape of their apertures.

Biaxial Geogrid

Biaxial geogrid has square apertures. It is used to stabilize the subgrade and prevent differential settlement, which reduces maintenance costs. Biaxial geogrid can also reduce the thickness of the base or sub-base by up to 60%, saving construction costs.

Triaxial Geogrid

Triaxial geogrid has triangular apertures. Its function is much the same as biaxial geogrid: reinforcing slopes and reinforcing soil for roads, and it can be combined with woven geotextile.

Uniaxial Geogrid

This type of geogrid has wider apertures than the other two types. Its function is similar to other geogrids; the difference is that it is used mainly for slope stabilization, allowing taller structures to be built in limited space.