Tensar TriAx® (TX) Geogrids

500M+ Squ. meters Installed Globally
2M+ ESALs of Performance Validation Testing
50% Savings in Aggregate Thickness(up to)
  • Designed for stabilisation of aggregates and soils
  • Advanced durable material for improvement of roads, rail and trafficked areas
  • Hexagonal structure with triangular apertures for high load absorption and distribution
  • Stiff structure, high rib profile and strong junctions for optimum aggregate interlock and confinement

Tensar® TriAx® geogrid was the first product to be manufactured specifically for the stabilisation of aggregates. Designed to optimise interlock and confinement, and essential for the control of particle movement, it results in a stronger, stiffer aggregate layer with increased load spreading capacity and deformation resistance. 

With applications in road foundations, pavement layers, rail trackbed and other trafficked areas, incorporating TriAx geogrid can result in aggregate savings of up to 50%, with the associated benefits of reducing cost, transportation, construction time and emissions. 

Product Range

Tensar TriAx geogrid is available in seven SKUs:  TX130S, TX150, TX150L, TX160, TX170, TX180 and TX190L. TX0 grades are also available for Pavement Optimisation solutions. 

All geogrids may work; they don’t all work as well.

Tensar TriAx has been designed specifically for the stabilisation of aggregates in roads, railways and trafficked areas. It has been the subject of extensive researchfull-scale testing and field trials. From the mass of data obtained, design parameters have been developed specific to TriAx and these are incorporated into Tensar’s design software. 

Hexagonal Structure with Triangular Apertures. 

The geometry of TriAx geogrid provides a near uniform (360°) in-plane stiffness. This has been shown to efficiently distribute the traffic load which acts radially on the stabilised layerLoads are absorbed with very low strain in the geogrid, which results in reduced layer deformation. 

Optimised for Interlock and Confinement 

Stabilisation is achieved by confinement of the aggregate particlesEffective confinement requires a high degree of interlock between aggregate and geogrid and strong junctions in the geogrid, as well as high in-plane stiffness. TriAx geogrid has been designed to optimise particle confinement, with a combination of 3D rib profile, high junction strength and stiff in-plane geometry. 

Design Software for Tensar TriAx Geogrids Based on Quantified Performance Benefits 

A mass of data has been collected and analysed from full-scale testing of multiple mechanically stabilised layers (MSL), composed of different grades of TriAx geogrid and a wide range of aggregate types. Testing has included both static load tests, and full scale trafficking tests From these data, the performance characteristics for a variety of Tensar TriAx MSLs have been developed, and design parameters defined. These design parameters, unique to specific TriAx grades, are then incorporated into Tensar’s TensarPave software. 

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Reduced Subgrade Stress 

The enhanced stiffness and strength of a mechanically stabilised layer incorporating Tensar TriAx geogrid increases load distribution, improving bearing capacity and reducing the stress acting on the subgrade. This in turn reduces subgrade deformation and rutting.  

Increased Pavement Life 

Pavement life is directly influenced by any deformation of the pavement structure. The particle confinement provided by Tensar TriAx greatly reduces permanent deformation, while the enhanced stiffness of the mechanically stabilised layer influences elastic deformations due to traffic. The result is an increase in pavement life – or alternatively, a possible reduction in pavement thickness for a given design life.