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DRAINCOTEX / DRAINATEX — Geocomposites For Road Drainage

Lasting roads thanks to the superior efficiency of prefabricated drainage systems

Soil naturally has some fundamental properties that can either foster or restrict the free flow of water. Its structure is more or less complex and water affects its behavior. Poor water circulation generates a reduction in the road’s loadbearing capacity. A high water content in the road will accentuate the expansion of the soil when frozen and favor the migration of fine particles.

With their superior mechanical characteristics, Draincotex and Drainatex prefabricated drainage systems were designed to evacuate infiltrated water, filter out fine particles and, in so doing, meet current needs with regards to the permanent improvement of road surfaces.

Description and function

The Draincotex geocomposite system consists of two filters wrapped around a draining core whose permeability is 1,000 to 10,000 greater than that of the surrounding soil. The components of this edge screen are produced of nonwoven polypropylene or polyester fibres. In the case of Draincotex — the vertical drain — a filtering pocket for a perforated collecting pipe is provided at the base.

The main function of Draincotex and Drainatex geocomposites is to channel water in the foundation to existing sump wells or ditches. The Draincotex also serves as a capillary screen, protecting the foundation against the margin effect as well as separating it from the road’s shoulder’s soil.

The main functions of Drainatex — the horizontal drainage system — on the other hand, are to eliminate hydrostatic suppression beneath the road surface and accelerate the evacuation of infiltrated water towards the edge screen.

Achievements


For more than 12 years, Draincotex and Drainatex drainage systems have been used in projects worldwide, including several sites in Quebec, Canada. Among these, we note Highways 440, 30, and 15 as well as a number of municipal projects.





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