Over deze norm
Specifies index test methods for determining the compressive behaviour of geotextiles and geotextile-related products. The test specimens can be subjected either to normal compressive loading or to a combination of normal compressive loading and shear loading. Products which are sensitive to shear failure, i.e. which have a columnar or cuspated structure, should be tested with both normal and shear loads applied, all other products can be tested with a normal load only.