Catalogs >
Tensar International >
TriAx brochure 2010

TriAx brochure 2010
12Pages

Catalog excerpts

The properties and performance advantages of Tensar TriAx™ geogrids A REVOLUTION IN GEOGRID TECHNOLOGY 360°/0° 45° 135° 90° 180° 225° 270° 315° TENSILE STIFFNESS FROM WIDE WIDTH TENSILE TEST Minimum Tensar biaxial geogrid stiffness Minimum Tensar TriAx geogrid stiffness Tensar biaxial geogrid stiffness Tensar TriAx geogrid stiffness

Open the catalog to page 1

A revolution IN GEOGRID TECHNOLOGY Tensar International has almost 30 years of experience in analysing and optimising the performance of geogrids. Drawing on this technical knowledge and expertise, Tensar has radically re-engineered the fundamental structure of geogrids to create a revolutionary new product. The TriAx geogrid is the culmination of this research and represents the future of geogrid technology, using one of the most stable forms – the triangular structure. 2

Open the catalog to page 2

3 Tensar invented and pioneered the original biaxial form of geogrid - until now the geogrid with the best performance in trafficked applications. Through Tensar’s policy of continual product development and innovation, the challenge for the Tensar development team was to improve on their biaxial geogrid and achieve even greater, long-term performance benefits. By examining all the design characteristics of the biaxial geogrid, through testing and research, the development team was able to identify the key areas that affect its performance. These are the profile of the rib section, rib...

Open the catalog to page 3

4 LOAD DISTRIBUTION Load distribution is 3-dimensional in nature and acts radially at all levels in the aggregate. For a stabilised layer to be effective it must have the ability to distribute load through 360 degrees. To ensure optimum performance, the geogrid reinforcement in a mechanically stabilised layer should have a high radial stiffness throughout the full 360 degrees. Multi -directional properties Biaxial geogrids have tensile stiffness predominantly in two directions. TriAx geogrids have three principal directions of stiffness, which is further enhanced by their rigid triangular...

Open the catalog to page 4

5 Greater interlo ck AND confinement In a mechanically stabilised layer, aggregate particles interlock within the geogrid and are confined within the apertures, creating an enhanced composite material with improved performance characteristics. The structural properties of the mechanically stabilised layer are influenced by the magnitude and depth of the confined zones. The shape and thickness of the geogrid ribs and the overall structure of TriAx has a direct influence on the degree of confinement and efficiency of the stabilised layer. Unconfined zone Transition zone (Partial confinement)...

Open the catalog to page 5

6 THE University OF NOTTINGHAM traficking Test fa cility Facilities at the Nottingham Transportation Engineering Centre (NTEC) at the University of Nottingham were used to identify the design features required for improved performance and to help shape and define Scientificaly proven TRIAX outperformS EVEN TENSAR BIAXIAL geogrids A number of tests and trials have been conducted to prove the performance benefits of the TriAx geogrid compared with Tensar biaxial geogrids. Tests included trafficking trials at the University of Nottingham and, on a large scale, at the Transport Research...

Open the catalog to page 6

7 Installation damage assess ment Additional tests conducted at the TRL were to establish how the TriAx geogrid would withstand a typical installation procedure and full compaction. TriAx geogrid proved tough enough to cope without loss of integrity to the overall structure. Multi -directional traficking performance The near isotropic stiffness properties of TriAx geogrid suggests that the product will perform consistently well, regardless of the wheel path direction. This has been confirmed by multi-directional trafficking tests in the NTEC slab test facility comparing TriAx with Tensar...

Open the catalog to page 7

ADVANCED TECHNOLOGY SUPERIOR TECHNICAL SUPPORT Even the most technologically superior products are unlikely to perform to their maximum potential without the accompaniment of expertise and experienced support. Tensar TriAx geogrids are supplied with the support of Tensar Technology - high performance products backed up by the knowledge and know-how to get optimum results. The Technical team at Tensar are world-renowned for unrivalled knowledge and expertise, providing engineers and contractors on request with the reassurance of design, technical and installation guidance on all projects....

Open the catalog to page 8

9 ...design enginers Tensar International’s design team can offer free applications suggestions and indemnified designs, with full working drawings, offering increased support to design engineers. ...contractors The additional aggregate reductions made possible by TriAx geogrid may be the saving you need to give you a competitive edge and win that contract. Working to tight deadlines, Tensar engineers can provide a fully costed, alternative design. For projects on-site, our engineers are available on request to advise on solutions for problems with construction over weak or variable ground....

Open the catalog to page 9

10 APPLICATIONS TriAxTM geogrids from Tensar International offer exceptional performance in ground stabilisation and sub-base reinforcement. Combined with the technical support and expertise offered by the Tensar team, TriAxTM represents the future of geogrid technology and, with its proven performance, will replace conventional biaxial geogrids. Case study 1 Roads and traficked areas With TriAx™geogrid and its structural performance benefits, there is an opportunity to make considerable savings on unpaved roads and permanent road construction. Less aggregate is required with TriAx™...

Open the catalog to page 10

TriAx represents the future of geogrid technology, replacing conventional biaxial geogrids. Case study 2 TriAx™ helped create significant time and cost savings for the new Cape Town World Cup stadium, where extensive earthworks had generated large quantities of variable quality loose fill. In one area this fill was used as a temporary haul road ramp. This needed converting into a permanent heavy-duty road, but was showing signs of deformation. With no time to excavate and re-compact the fill material, two layers of Tensar TriAx™ were added to the sub- base. This stabilised the ramp and...

Open the catalog to page 11