This article first appeared in the Railway-News magazine, Issue 4 2022 Track & Infrastructure Edition.
GEOfabrics has been supplying the rail industry with trackrehabilitating geotextiles and geocomposites for over 20 years. Working directly with rail authorities, contractors and designers, alongside its comprehensive R&D programme, it has developed leading geosynthetics to provide significant cost benefits to the rail industry.
Geosynthetics comprise an assortment of synthetic polymer materials, specifically fabricated to be used in geotechnical, geo-environmental, hydraulic and transportation engineering applications. And they’ve been employed to perform a number of functions in track construction and rehabilitation for almost half a century.
When properly specified by experts, their use has been proven to significantly enhance the performance of the trackbed in a number of ways – reducing maintenance costs and increasing the lifetime of the design. For this reason, it’s vital that rail operators work with a geosynthetics expert to get the optimum result and a solution which is specific to the geotechnical issue at hand.
GEOfabrics is perfectly placed to offer this kind of specialist advice and, coupled with its extensive range of geosynthetic products, provides clients with bespoke solutions to their problem. It has developed and provided a wide range of tailor-engineered products since 1990. These have been specifically manufactured to address many of the problematic ground conditions that exist beneath railway track and the surrounding areas.
A full spectrum of products is on offer – from separation nonwoven geotextiles for coarse subgrade all the way up to specialist geocomposites for poorly draining and unstable subgrade. Every trackbed issue is evaluated individually, to ensure that every problem gets a bespoke solution. The team of GEOfabrics specialists assists with specifying the correct product, depending on the conditions.
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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.
GEOFabrics will be in attendance at Railway Interchange 2023 at the Indiana Convention Centre in Indianapolis, IN, USA.
TrackTex has been installed in a road railroad crossing in Illinois with no reported issues throughout its utilisation.
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.
Use the form opposite to get in touch with Geofabrics directly to discuss any requirements you might have.