ÖNORM EN ISO 10321

This International Standard specifies an index test method for determination of the tensile properties of joints and seams in geotextiles and related products, using a wide-width strip. The method is applicable to most geotextiles and geotextile-related products. It is also applicable to geogrids, but the specimen dimensions may need to be altered. This method quantifies the tensile strength of a joint or seam between geotextiles or related products. It can provide data to indicate the joint or seam tensile strength which can be achieved. A joint or seam efficiency can be calculated by comparison of the joint/seam tensile strength with the tensile strength of the unjointed material as determined by IS0 10319. Procedures for measuring the tensile properties of both conditioned and wet specimens are included. Some modification of techniques may be necessary for particular geotextiles, e.g. strong geotextiles, meshes or geotextiles made from glass fibre, to prevent them from slipping in the jaws or being damaged as a result of being gripped in the jaws. The basic test for joints or seams in all kinds of geotextiles or related products uses test specimens of 200 mm width, with the provision for the seam or joint to extend for 25 mm on each side in order to provide joint or seam stability during the test (see figure 2).