Biaxial Geogrids for Soil Reinforcement

A triaxial geogrid features a triangular aperture pattern with multi-directional ribs that distribute load radially in all directions, unlike biaxial designs that work in two. This geometry provides more uniform confinement of aggregate particles, delivering superior base course stabilization. Triaxial geogrids are commonly used in road base reinforcement and are associated with the Tensar TriAx product line.

Biaxial geogrids are used in a wide range of civil applications including paved and unpaved road construction, parking lots over soft subgrades, retaining walls, GRS slopes, bridge abutments, railroads, airports, mining and logging access roads, wind farm access tracks, and landfill construction. They are effective wherever subgrade stabilization and load distribution are required.

By interlocking with aggregate and mechanically stabilizing the base layer, biaxial geogrids allow engineers to reduce the required thickness of aggregate or subbase material. This directly lowers material costs and trucking expenses. Simplified installation also reduces labor time on-site, while the long-term performance of the geogrid extends pavement life, minimizing costly future maintenance and rehabilitation.

Biaxial geogrids are primarily manufactured from polypropylene (PP) or high-density polyethylene (HDPE). These synthetic polymers provide excellent resistance to chemicals commonly found in soil, UV radiation, and mechanical damage during installation. The result is a durable, permanent solution with a long service life suitable for demanding civil and environmental applications.

Yes. The biaxial geogrids supplied by Coleman Moore Company meet DOT-compliant specifications and satisfy project performance requirements for civil and environmental applications. Products from manufacturers such as Tensar and Huesker carry technical data that supports specification compliance. Coleman Moore also assists engineers and contractors in confirming product suitability against specific DOT project requirements.

Selecting the correct geogrid depends on soil type, CBR value, traffic loading, application type, and project lifespan requirements. Coleman Moore Company offers on-site DCP testing with CBR conversion and uses Tensar Plus design software to recommend optimal geogrid type and aggregate thickness. Contact our team for a site evaluation and product recommendation tailored to your specific project conditions.