This article first appeared in the Railway-News magazine, Issue 3 2022.
Amongst the headaches faced by rail operators and contractors are issues caused by problem areas of ballast contamination in trackbeds. One solution is re-ballasting – however this is only successful for a limited period and the problem will resurface. The cost implication of regular, ongoing maintenance
is significant but can be avoided with a specialist solution to mud pumping in place. And this is where TrackTex comes in.
TrackTex is a patented, anti-pumping geocomposite. The result of more than a decade of research by trackbed engineers, its unique filter system improves trackbed quality over time. It’s been proven to significantly increase maintenance intervals – by more than 25 times.
Globally, the rail industry has been actively using TrackTex since 2010 – and enjoying the significant cost savings that come with it. Some of the world’s leading operators have already installed TrackTex as a spot treatment. These include Network Rail (UK), ProRail (Netherlands), Norfolk Southern, Union Pacific, Canadian National, Canadian Pacific (USA/Canada), amongst others.
There’s now more than 8 million square feet of TrackTex installed within Europe, Australia and the United States to date – a statistic which speaks volumes about its efficacy. Site monitoring across a number of key sites has also resulted in clear evidence of TrackTex success. It’s now accepted as the most cost-effective way of preventing and correcting mud pumping failure by many rail operators.
Not all ballast contamination is equal – and some trackbeds face more serious issues, calling for additional reinforcement. With this problem in mind, a version of TrackTex has been developed that incorporates a geogrid on top – TrackTex G. This is a specialist solution for areas of track with a low bearing capacity.
Railway-News magazine Issue 4 Track & Infrastructure edition, November 2022: GEOfabrics - Trackbed Stabilisation Solutions from the Experts.
Railway-News magazine Issue 4, September 2021: Geofabrics - Clearing the Route: CuTex Geocomposite – Root Barrier Inhibition.
Railway-News Magazine issue 3 2021: GEOfabrics – TrackTex Geocomposite – The ‘Once Only’ Solution to Mud Pumping
In 2010 Geofabrics launched a new anti pumping geocomposite in the UK, which could be used to prevent the development of mud pumping.
This paper describes the development process undertaken to produce a lightweight, geosynthetic filter to replace a sand-blanket used within trackbed.
RK4 - a textile/grid composite, was installed to stabilise the ballast/subgrade interface and reduce the upward movement of subgrade fines.
TrackTex™ Anti-Pumping Geocomposite was used to to provide an increased form of ballast protection in known trouble areas in Christiansburg, Virginia.
TrackTex anti-pumping geocomposite was selected by Network Rail as a method of preventing mud pumping and prolonging trackbed performance.
Geofabrics' CuTex copper composite root barrier protects rail infrastructure from Japanese knotweed.
A statement from Gordon Donald, on the success of the Geofabrics Ltd versus Fiberweb Geosynthetics Ltd patent infingement case.
A statement by Gordon Donald, Managing Director of Geofabrics, regarding the judgement on patent infringement by Fiberweb Geosynthetics Ltd.
TrackTex was installed on a frequently trafficked diamond crossing as a long-term effective remedy to frequent fouling caused by mud-pumping.
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