Open

Product by Category > Geotextiles > TERRAM Hydrotex®


GEOTEXTILE FILTER SEPARATOR – RAIL TRACKBED APPLICATIONS

 

General Information

TERRAM Hydrotex® provides a permanent way and high speed solution for trackbed stability that not only acts as a filter/separator for fine soils, but also removes the requirement for a sand blanket or filter medium.

Product Information 

TERRAM Hydrotex® is a nonwoven geocomposite consisting of a central filter media thermally bonded to two opposing needle punched nonwovens Robust Geotextile filter layers, to create a geocomposite with sufficient strength and protection to be durable to the abrasion and point loading of ballast. After 10 years of research and development, this new cost saving technology has now become available globally.

Application 

The traditional use of a sand blanket in railway trackbed uses a sub-ballast and/or a graded-sand layer to prevent the upward movement of fine sub-grade particles, while allowing effective drainage and dissipation of pore water pressure. TERRAM Hydrotex® offers this solution in one geocomposite.

Benefits: 

TERRAM Hydrotex® is strong but flexible allowing the composite to conform to the excavated formation, so that no voids exist below the filter media for the development of pockets of slurry resulting in an unstable trackbed.

TERRAM Hydrotex® provides true valued engineering. It enables the trackbed to be installed up to 4 x quicker than the standard practice of using sand or sub-ballest.

It also reduces costs to both the client and the contractor, reducing material costs, and enabling the track to be handed back 4 times quicker.

Features: 

  • Prevents upwards particle passage smaller than 0.001mm
  • Permeable filter, allowing upward and downward water transmission
  • Replaces the requirement for a sand blanket or filter medium
  • Quickly and easily installed, no specialist plant is required
  • Functions under ballast without any reduction in performance
  • Approved by Network Rail, SNCP and ProRail
  • Residual slurry becomes desiccated as any pore water is dissipated
  • Supplied on standard rolls of 3.9m x 25m (other sizes available on request)

Environmental Benefits 

TERRAM Hydrotex® composite reduces the depth of excavation that would be required with a sand blanket. The result is a decrease in the amount of spoil being taken away for landfill and a reduction of vehicles required to deliver materials.



Case Study

TERRAM HYDROTEX® at Ardglen NSW

Project Details: Routine Corrective and Reactive Maintenance (RCRM) Location: Ardglen NSW Overview Completed in 1877 the Ardglen Tunnel is the oldest single line tunnel still in use.  Located at the summit of a ridge with steep grades in each direction the heritage listed brick lined tunnel is not only historically significant but also presents challenges […]

View More Case Studies


Latest Posts

October 3rd, 2023

Sustainable Geosynthetic solutions for wind farms

The urgency to transition to renewable energy sources has intensified as global energy demands continue to rise. Wind farms are gaining momentum as an effective solution to combat climate change and...

Read More
August 31st, 2023

Propex Erosion Control Products: The Most Technologically Advanced Geotextiles Available

Propex is a leading innovator, developer, and supplier of geosynthetics worldwide. Their products are used in a variety of applications, including erosion control, drainage, and...

Read More
August 21st, 2023

Revolutionising Geotextile Sand Containers With Innovative Closing Technology

At Global Synthetics, we are excited to share ground-breaking news in the field of geotextile sand containers. Naue, a leading supplier of geo-construction materials, has recently obtained a patent...

Read More
July 7th, 2023

Combigrid®: Applications of Geogrid/Geocomposite in pavement construction

Geogrid reinforcement and stabilisation is used in roadways in two major applications: base reinforcement/stabilisation and subgrade stabilisation. In base reinforcement/stabilisation, the geogrid...

Read More


If you would like further information
about any of our products please

Contact Us
Contact Us