| abstract |
In particular for the protection of track areas for track bodies from undesirable vegetation, which reduces the strength of the ballast bed, a flat, opaque, but air and water permeable covering is proposed, which consists of a rubber granulate glued by polyurethane, the pore size of the mat material between 0.2 and 2 mm, the total porosity between 10 and 40 percent and the water permeability coefficient under a mechanical load of 10 kN / m · 2 · between 1.6 and 9.8 · 3 · m / sec. The mat covering significantly reduces maintenance times and costs, and the use of environmentally harmful pesticides becomes superfluous. |