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Tracktex® Green is a geocomposite material made up of two Bidim® Green geotextiles and a micro-porous filter. It is installed below the ballast in rail infrastructure projects to prevent water from penetrating the subgrade, dissipate pore-water pressure, and stop soil particles from contaminating the ballast.
The material directs rainfall laterally to drain outside the formation. This allows any subsurface moisture to be drawn through the geocomposite under load, while filtering fine clay particles from migrating to solve the issue of mud pumping. Tracktex Green geocomposite conforms to surface depressions to prevent the creation of slurry pockets and reduces costly track repairs and maintenance for railway operators and contractors.
Why choose Tracktex Green?
Tracktex Green can:
- Prevent and correct mud pumping failure compared to other alternatives such as sand layers
- Provide cost savings by increasing the maintenance intervals on track beds often caused by mud pumping failure
- Reduce construction costs with quick and easy installation – no special tools or techniques are required which can help lower possession times on busy railway lines and networks
Tracktex Green is approved for use by Australian and New Zealand Authorities and is a proven solution used both locally and internationally since its introduction in 2011.
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APPLICATIONS
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FUNCTION
Barrier
Prevents or reduces the movement of any fluid through the use of a geosynthetic barrier. Used to isolate one material from another. Common applications are landfills or ponds to prevent contamination of surrounding areas.
Drainage
Geosynthetics can act as a drain to carry fluid through less permeable soils. Ideal for use in subsoil drainage systems, can be used to dissipate pore water pressures at the base of road and railway embankments, sports fields and behind retaining walls. Facilitates surface water runoff.
Filtration
Geosynthetics can act as a filter by allowing water to move freely through while preventing the migration of fine particles. Often used to prevent soils from migrating into drainage aggregate or pipes while maintaining flow. Can also prevent soil erosion in coastal and riverbanks when used below loose stones or rocks and other material.
Separation
Geosynthetics can be used to prevent the intermixing of soil types of different sizes in the construction of roads, railways, and embankments where the ground is soft and unstable to maintain the integrity of each material while allowing free passage of liquids or gases. Using a layer of geotextile to separate the soft ground from the fill material reduces the amount of fill required, increases the lifespan of the road or rail structure and cuts long-term maintenance costs.
