Biaxial geogrid was invented by Tensar in the late 1970s. Biaxial geogrids have square or rectangular openings, called apertures. Different types of biaxial geogrids exist on the market, but for roadbed applications, testing has consistently shown that integral geogrids made by a process known as punched and drawn perform best. In 2007, Tensar introduced multiaxial geogrids, known as TriAx. These geogrids have triangular apertures and ribs with a higher aspect ratio than biaxial geogrids. This geometry provides better interlock with the surrounding aggregate than biaxial geogrids, resulting in improved performance in stabilisation applications. In 2021, Tensar introduced InterAx geogrids. InterAx builds on the decades of knowledge and testing at Tensar to deliver a higher level of performance. Through thousands of hours and millions of dollars of research and development, we combined advanced materials science, a revolutionary new geometry, extensive performance validation testing, and an entirely new design approach to deliver better solutions that are more economical, longer lasting, more resilient, and more sustainable.
 

Characteristic	InterAx	TriAx	BX
Development	InterAx geogrids were introduced in 2021, representing a significant leap forward in geogrid design and materials	TriAx geogrids were introduced in 2007, which marked an advancement in geosynthetic technology	BX geogrids have been around since the late 1970s
Generation	Third	Second	First
Aperture Geometry	Triangular, Hexagonal, Trapezoidal	Triangular	Square
Material Structure	Coextruded - Three Layers	Monolithic - Single Layer	Monolithic - Single Layer
Stabilisation Direction	Longitudinal, transverse, and diagonal	Llongitudinal, transverse, and diagonal	Longitudinal and transverse
Performance	Best load distribution and interlocking capabilities with various types of fill materials	Adequate load distribution and interlocking capabilities	Limited load distribution
Performance Differential