Rail Track Support
For railways around the world, line speed restrictions and expensive and disruptive track maintenance are frequently caused by poor track geometry and misaligned rails. But Tensar’s rail track design technology has been proven to substantially reduce track maintenance, being the subject of extensive independent research and development and approved by Network Rail in the UK and National Rail Authorities worldwide. In particular, the large aperture Tensar TriAx TX190L geogrid has been designed to lock ballast in place to limit lateral movement and keep tracks aligned.
How you can benefit
Compared with traditional trackbed construction, creating a mechanically stabilised railway ballast layer can:
- Maintain track geometry for longer
- Reduce the rate of ballast settlement
- Reduce maintenance induced ballast degradation
- Extend the rail track maintenance cycle by a factor of around three
- Stabilise ballast for well over 20 years
New Lines
New rail track construction over weak or variable subgrades Tensar TriAx geogrids can mechanically stabilise granular sub-ballast layers, reducing their thickness by about a third. Tensar geogrid systems can also be used to provide soil reinforcement of embankment foundations.
How you can benefit
Compared with traditional rail track construction, trackbed improvement using a mechanically stabilised railway sub-ballast layer can:
- Cut construction time and costs by reducing the sub-ballast needed for the same bearing capacity
- Subgrade excavation depths and resulting spoil quantities can be reduced
- Reduced materials quantities deliver a more sustainable solution
- Maintain rail track geometry
Certification and Approval
TriAx TX190L geogrid has been approved by rail authorities, including Network Rail, for improving the performance of ballasted track.
