- What is TrackTex
- Mud Pumping
- Proven Performance
- About Us
- Contact Us
TrackTex is the result of more than a decade of research and development by GEOfabrics, and built on many years of work conducted by British Rail and other organisations into the use of geotextiles in rail applications.
Site trials through the 1970’s and 1980’s established that geosynthetics offered clear benefits in enhancing the performance of existing trackbed layers or significantly reducing the required depth of construction.
Four main classes of geosynthetic were identified:
All offered varying degrees of improvement in the performance of aggregates, but the long term aim still remained to find a geosynthetic that could replace all the functions of the sand blanket.
Such a material needed to prevent upward migration of fines, confirm to the excavated formation thereby preventing subgrade erosion, be durable to the dynamic environment found below ballast, and allow for the dessication of existing slurry.
It was known non-woven geotextile alone would not provide sufficient filtration due to the pore size in relation to the particle sizes present in the slurry. After testing many options it was established that using a microprous filtration media provided the filtration properties required, but that it would be susceptible to damage under ballast loading.
A prototype composite sandwiched the microporous filter two heavy protector non-wovens was created. Using a full scale testing rig the prototype was subjected to 3.7 million cycles to simulate approximately 70MGT of heavy traffic, then excavated and examined.
There was no sign of slurry above the composite while underneath the ballast was full of wet slurry. The slurry adhering to the underside of the composite was stiffer (more viscous) indicating a lower moisture content caused by the cyclic action squeezing the water out leading to desiccation. The perfect combination had been discovered.
At GEOfabrics, we provide technical support to help you get the most out of TrackTex and address the cause of mud pumping. This ensures the stability and performance of your tracks. Our team of experts utilizes advanced techniques and technologies to deliver effective solutions tailored to your specific needs