scope:

Describes methods for determining the compressive creep behaviour of geotextiles and geotextile-related products by measurement of the rate of change of thickness with respect to time. The test specimens can be subjected either tp normal compressive loading or to a combination of normal compressive loading and shear loading. Products which are to be used for carrying water in the plane of the product and which are to be subsequently tested for this function, are tested according to the procedure using a combination of normal and shear loading. The tests are carried out with the specimen immersed in water, unless it can be shown that carrying out the tests in the dry does not affect the results.