TerraTex HD - Ballast Drainage

A major concern and cost for railroad companies and spur line owners is the replacement of fouled ballast. As trains pass over the rails, the up and down motion of the ties pump subgrade fines into the ballast. This contaminated ballast cannot support design loads. TerraTex HD acts as a separator between the ballast or sub-ballast and subgrade fines while reducing the pressure on the subgrade. As the ties move, water can be pumped up through the fabric and out through the ballast, but soil particles are kept in place. Also, TerraTex HD helps confine the ballast against lateral movement, which, thereby, maintains its density and load bearing characteristics.

TerraTex HD can be installed in new construction or during track bed rehabilitation. The roll thickness and weight allows for fabric placement by hand or with most automated rail maintenance equipment. The rail sections can be put directly on the fabric and the ballast placed afterwards using conventional methods.

The applications for construction fabric have enjoyed widespread acceptance and significant growth in usage. This success can be attributed to the excellent use of geotextiles. However, many of the construction fabrics used today were designed for the moderate soil conditions found in most construction projects. TerraTex HD, on the other hand, is a high strength, robust fabric that is engineered for stabilization applications in more severe soil conditions.

360' x 12.5'

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