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Cordrain® is a geocomposite vertical drainage blanket that consists of plastic cuspated inner core and fitted with a heat bonded, non-woven geotextile filter fabric. It is designed to reduce hydrostatic pressure behind structures, which lowers the likelihood of structural damage caused by foundation movements in expansive soils. Cordrain is suitable to be used for basements, retaining walls, bridge abutments, culverts and tunnel lining.
When placed up against the wall, Cordrain works by filtering the water from the backfill through the geotextile bonded to one side and draining it down the cuspated core to a collector drain at the base of the wall, removing the water from site. The solid cuspated core provides a preferential path for water movement down to the collector drain, keeping the wall free from moisture.
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WHY CHOOSE CORDRAIN?
- Lowers the likelihood of structural damage caused by foundation movements in expansive soils
- Eliminates the need for aggregate or sand backfill
- Reduces hydrostatic pressure behind walls
- Assists in waterproofing structures by providing a protection layer
- Lightweight and flexible structure makes it easy to handle and quick to install
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FUNCTION
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.
