Interlock Biaxial Geogrid

Yes. Interlock geogrids are designed to be highly resistant to damage during installation and to environmental conditions. During the design process, a reduction factor for installation damage is applied depending on the type of fill material in contact with the geogrid. These factors typically range from 1.0 to 1.30, ensuring that the long-term performance of the geogrid is maintained.

Interlock geogrids are typically used with granular materials, where they perform most efficiently through the interlocking and friction mechanism between the aggregate and the geogrid. They are therefore commonly used with materials such as crushed stone, gravel, and other well-graded aggregates, which allow the geogrid apertures to interlock with the particles and improve load distribution. In cohesive soils (such as clays), the interlocking mechanism is limited, so the reinforcement effect of the geogrid is generally reduced unless a suitable granular layer is used in combination with the geogrid.

Interlock geogrids improve the performance of soils by creating a mechanical interlock and friction mechanism with granular materials, which helps distribute loads more efficiently and reduce deformation. This allows for thinner aggregate layers, improved bearing capacity, and increased stability of roads, platforms, and foundations. Compared with other soil reinforcement methods, such as increasing the thickness of granular layers or chemical stabilisation (e.g. lime or cement), geogrids can provide a more efficient and sustainable solution, as they reduce the amount of imported material required and simplify construction. In addition, geogrids are quick and easy to install, which can help reduce construction time and overall project costs.

Yes. Interlock geogrids are made from durable polymers that are chemically stable, ensuring no contamination of the surrounding soil or groundwater. By improving the load-bearing capacity of the ground, Interlock geogrids can reduce the required thickness of granular layers. This minimises excavation, lowering the volume of soil that needs to be removed and disposed of, and reduces the amount of imported aggregate required for construction. Overall, the use of geogrids decreases material consumption, transportation, and environmental impact. On average, using geogrids for soil reinforcement and stabilisation can reduce CO₂ emissions by more than 40%.

No. Interlock geogrids must be installed on a flat, level and even surface to perform effectively. Proper tensioning and load distribution are essential for soil reinforcement and stabilisation, and uneven or sloped ground can compromise the mechanical interlock and friction mechanisms, which ensures geogrid performance. For optimal performance, the underlying surface should be prepared flat before installation.

When properly installed and covered, Interlock geogrids are highly durable and resistant to degradation, with a typical service life of 50–100+ years, maintaining their reinforcement performance throughout this period.

No. Once installed and covered, Interlock geogrids are designed to remain in place permanently. Removing or relocating them can damage the geogrid and compromise its structural integrity, reducing its effectiveness for soil reinforcement and stabilisation.

No. Once properly installed and covered, Interlock geogrids are maintenance-free and provide long-term soil reinforcement and stabilisation. If a geogrid is cut for underground services, a new layer of Geogrid should extend at least 1 m beyond the cut, with a patch placed over the same area to restore full performance.