SKZ tests abrasion resistance of geotextiles according to DIN ISO 22182
The SKZ Plastics Center in Würzburg is one of the few accredited testing laboratories in the world that is permitted to test the abrasion resistance of geotextiles in accordance with DIN ISO 22182. As soil erosion caused by flooding is an increasingly pressing problem in river banks around the world, this test is more important than ever. The reason: geotextiles play a crucial role in mitigating this problem.
An abrasion drum for testing geotextiles. SKZ is one of the few accredited testing laboratories in the world authorized to test the abrasion resistance of geotextiles in accordance with DIN ISO 22182 (Photo: Luca Hoffmannbeck, SKZ)
Flooding on the rise - testing more important than ever
Over the years, flooding has increased dramatically, causing serious damage to riverbanks and riverbeds. Geotextile bags in the form of revetments are used to protect the soil in riverbanks and riverbeds and are crucial in minimizing the impact of flooding.
Simulation of geotextile abrasion stress
The Index test method, carried out by the SKZ testing department, simulates the abrasion stress of geotextiles, such as that caused by the movement of rocks in an embankment or the transport of sediments in rivers. The purpose of the test is to evaluate the abrasion resistance of geotextiles to ensure that they meet the high demands of soil stabilization. This test is an important element in ensuring the stability of geotextiles in the given environment.
Simulation of abrasion stress on geotextiles
The Index test method, performed by the SKZ testing department, simulates the abrasion stress of geotextiles, such as that caused by the movement of rocks in an embankment or the transport of sediments in rivers. The purpose of the test is to evaluate the abrasion resistance of geotextiles to ensure that they meet the high demands of soil stabilization. This test is an important element in ensuring the stability of geotextiles in the given environment.
The test includes the following products:
Geotextile bags (geobags) made from nonwoven geotextiles: These act as revetments in embankments and riverbeds and as filter elements under armourstone, where they prevent soil erosion caused by flooding.
Nonwoven geotextiles: These act as filter elements under armourstone and help maintain soil structure and stability.
Testing in a rotating drum
The test is conducted in a rotating drum in which a mixture of basalt chippings and water glides over the installed geotextile test specimens for 40,000 revolutions to the left and 40,000 revolutions to the right. The abrasion effect is caused by sharp-edged basalt chippings. Abrasion resistance is evaluated by comparing the tensile strength and/or additional hydraulic properties such as the characteristic opening width and filter resistance before and after the abrasion test.
Helping to solve global environmental problems
SKZ aims to maintain the highest standards in the testing of geotextiles to ensure that these materials help to minimize the impact of flooding on sensitive ecosystems and human settlements worldwide. SKZ's expertise in materials testing helps to ensure the reliability of geotextiles, thereby making a significant contribution to solving global environmental problems
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