Drainage mat with high crushing strength and waste-dump base containing said mat
AssigneeAkzo N.V.
InventorHenny Berkhout
Life of this patent
Estimating the term…
Abstract
Drainage mats with high compression resistance comprising two fabrics and grains fixedly arranged therebetween, wherein the grains are placed in one layer and are spaced a distance of at least 50% of the average grain size. One of the two fabrics is basically a filter layer, whereas the second fabric can be a filter layer or a tightly woven strip. In addition, a three-dimensional mat with positioning seats for the grains can be placed between the two fabrics. This drainage mat is suitable for constructing waste-dump bases.
Claims12
A drainage mat with a high compression resistance, comprising two fabrics and grains fixedly arranged therebetween, said grains being arranged in one one-grain-thick layer and being spaced apart by a distance of at least approximately 50% of the average grain size.
Dependencies are inferred from the claim text.