How it works

TrackTex is a unique patented geocomposite and the result of over a decade of research by trackbed engineers and material scientists. Its specialist filter improves trackbed quality over time and has been proven to significantly increase maintainance intervals.

An Innovative Solution.

TrackTex is a multilayer composite with a unique microporous filter media protected by specially engineered protective nonwoven geotextiles. The filter is an orientated microporous polymeric film with a series of microcells and interconnecting pores, characterised by its relative strength and ability to transmit vapour.

TrackTex can effectively facilitate the passage of liquid under pressure, but the pores are such that the passages of clay fines are not prohibited. Without pressure, water cannot pass through the filter, therefore any underlying clay formation will, over time dry out and have an improved modulus.

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A Microporous Composite.

Prevents subgrade fines and slurry from migrating into the ballast.

Facilitates desiccation of the existing subgrade slurry by allowing pore pressures to dissipate under loading, improving track quality of the formation while preventing re-saturation from above.

Proved to be sufficiently robust to installation and operational damage.

TrackTex is flexible enough to conform to uneven subgrade formation such that no slurry inducing voids exist.

Cost Effective.

TrackTex is a unique patented geocomposite and the result of over a decade of research by trackbed engineers and materials scientists. Its specialist filter system improves trackbed quality over time and has been proven to significantly increase maintenance intervals.

The use of TrackTex is the most cost-effective way of preventing and correcting mud pumping failure. Rainwater is unable to penetrate the microporous filter and is drained laterally to the side of the track.

Pore water below TrackTex is relived upwards under cyclic loading which aids residual slurry to dry out as the pore water is dissipated. TrackTex conforms to the surface depressions in the formation layer and prevents the creation of slurry pockets. Fast installation rates reduce the construction costs and possession time.

Bradley Junction 20

Shown to increase trackbed maintenance intervals due to pumping failure by more than 25 times, providing significant savings over any available alternative.

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