Technical Documents

GEOfabrics has been at the forefront of research into developing geosynthetics since we were established in 1990. As part of our product development process we work with a wide range of stakeholders to advance understanding and effectiveness of product applications.

Documenting the background to the TrackTex development process are 3 key papers which were published to provide detail on various aspects of the background to the development, the simulations and testing used to test and verify performance, through to early use in commercial applications.

Synthetic Replacement for Sand-Blankets to Prevent Pumping Failure describes the development process undertaken to produce a lightweight, cost effective geosynthetic for use in trackbed as a replacement for sand blankets.

Accelerated Testing of Geosynthetics is Trackbed using Europes Largest Full Scale Rig describes the construction of our full-scale trackbed load test facility, and how it was used to simulate the harshest conditions found in railroad trackbed construction.

The Development of a Geocomposite to Prevent Mud Pumping describes the research background to TrackTex, summarises the main causes of subgrade erosion, and how several years of testing provided rigorous simulation of the harshest conditions under a mainline railroad, and how this testing was validated in one of the first commercial installations.


Browse Technical Papers

Explore our collection of technical papers.
Mud Pumping Diagnosis and Treatment
This paper describes the development process undertaken to produce a lightweight, geosynthetic filter to replace a sand-blanket used within trackbed as a method of preventing and solving the subgra...
Author: P Sharpe, J Herbert
Synthetic replacement for sand-blankets to prevent pumping failure
This paper describes the development process undertaken to produce a lightweight, geosynthetic filter to replace a sand-blanket used within trackbed as a method of preventing and solving the subgra...
Author: A Leech
The development of a Geocomposite to prevent mud pumping
In 2010 GEOfabrics launched a new anti pumping geocomposite in the UK, which could be placed directly on the sub-grade or on a failed sub-ballast and prevent the development of mud pumping.
Author: Dr P Sharpe, T Roskams & S N Valero
Accelerated testing of geosynthetics in trackbed using Europe's largest ful...
This paper describes the construction of a full scale trackbed load test facility which simulates the harshest conditions under which a geosynthetic layer is likely to be used. A background to the ...
Author: Dr P Sharpe & V. R. Caddick
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Preventing Mud Pumping, Ensuring Track Stability

Comprehensive Services for Track Stability and Performance

At TrackTex, we offer a range of services designed to address the challenges of mud pumping and ensure the stability and performance of your tracks. Our team of experts utilizes advanced techniques and technologies to deliver effective solutions tailored to your specific

Professional Development Hours

GEOfabrics continuing education sessions provide technical training on specifying and using TrackTex. These sessions contribute to PDH hours.

Trackbed Stabilization

Geosynthetics are widely used as a way to improve ballast performance under railways. GEOFabrics RK4 is a geocomposite comprising a stabilizing geogrid bonded to our RK1 needlepunched non-woven sep...

Symptoms of Mud Pumping

The symptoms of Mud Pumping are similar to those of life expired ballast, i.e. wet spots appearing at the surface of the ballast accompanied by rapid deteriorating of track geometry. However, from ...

Discover Our Case Studies

Explore our latest case studies showcasing our expertise.

Diamond Crossing Replacement with TrackTex

In Detroit Lakes, MN, a frequently trafficked diamond crossing operated by Canadian Pacific and BNSF had experienced frequent fouling because of mud-pumping. Mud pumping results in ballast failure,...

Coos Bay Line Tunnel 21 Rehabilitation

The Coos Bay Rail Line is owned and operated by the Port of Coos Bay. It spans 134 miles from Coquille Oregon to Eugene Oregon, providing connections to the North American rail network for manufact...

Crossing Repair and Replacement using TrackTex

This road crossing had been replaced and repaired multiple times due to issues with track geometry movement and differential settlement of the highway and railroad. Union Pacific Engineers assessed...