Composite drainboard for blindside application, and foundation assembly
AssigneeEwald Dörken AG
InventorMarcus Jablonka
Life of this patent
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Abstract
A composite drainboard includes a patterned substrate core having an inward surface, and opposed outward facing surface. The substrate core comprises a plurality of projections, forming concavities on the inward surface. A first geotextile membrane is attached to the substrate core and covers the outward facing surface. A second membrane is attached to the substrate core to cover the inward facing surface and the concavities to provide a substantially smooth coating to the inward surface. The second membrane at least partially absorbs a liquid applied waterproofing.
Claims23
Composite drainboard comprising:
- a patterned substrate core having an inward surface, and opposed outward facing surface, said substrate core comprising a plurality of projections, forming concavities on said inward surface;
- a first geotextile membrane attached to said substrate core and covering said outward facing surface;
- a second fiber membrane attached to said substrate core and covering said inward facing surface and said concavities to provide a substantially smooth coating to said inward surface;
- wherein said second fiber membrane is configured to allow application of an external liquid-applied waterproofing layer atop said second fiber membrane;
- wherein the external applied waterproofing layer is at least partially absorbed by the second fiber membrane and is to be positioned between said inward facing surface and in contact with an adjacent poured concrete layer.
A foundation assembly, comprising:
- a lagging layer adjacent to soil;
- a blindside drainage layer comprising:
- a drainboard with a patterned substrate core having an inward surface, and opposed outward facing surface, said outward facing surface connected to said lagging layer, said substrate core comprising a plurality of projections, forming concavities on said inward surface;
- a geotextile membrane attached to said substrate core and covering said outward facing surface;
- a fiber membrane attached to said substrate core and covering said inward surface to provide a substantially smooth coating to said inward surface, wherein said fiber membrane absorbs a liquid waterproofing;
- a liquid-applied waterproofing layer, applied to said fiber membrane, and at least partially absorbed by said fiber membrane;
- a poured concrete layer poured directly against said liquid-applied waterproofing layer having an outer face in contact with said liquid-applied waterproofing layer.
A method of forming a foundation, comprising:
- forming a lagging layer adjacent to soil;
- installing a plurality of composite drainboards on the lagging layer, each of said plurality of composite drainboards comprising:
- a patterned substrate core having an inward surface, and opposed outward facing surface, said substrate core comprising a plurality projections, forming concavities on said inward surfaces;
- a first geotextile membrane attached to said substrate core and covering said outward facing surface;
- a second membrane attached to said substrate core and covering said inward facing surface and said concavities to provide a substantially smooth coating to said inward surface;
- applying liquid waterproofing to said second membrane to form a waterproofing layer;
- pouring a concrete layer after applying said liquid waterproofing and in contact with said waterproofing layer to form a concrete wall.
Dependencies are inferred from the claim text.