Search standard for testing available at SKZ
Durable – reliable – safe
Everyday life without plastic products is impossible. Therefore it's important that they fulfill their tasks as good as perspected. We are happy to perform the necessary quality assurance tests for this purpose.
Tested safety
Safety and outstanding quality are good sales arguments for your products. In our accredited test laboratory, we test and certify a wide range of different plastic products using numerous test methods.
Confidence bonus for certified products
Test seals increase confidence in a product and the associated tests for quality assurance. Our accredited test laboratory will also test and certify your products.
Search standard for testing available at SKZ
Geosynthetics
Geosynthetics (GSY) are synthetic materials used in construction and engineering projects to overcome various geotechnical challenges. They are made from durable polymer materials and are known for their resistance to rotting, chemical influences and environmental conditions.
We test the following products for you:
- Geotextiles such as geotextile fabrics (GTX-NW), geogrids (GTX-W), and geogrids (GTX-K)
Textiles consisting primarily of synthetic fibers such as polypropylene (PP) or polyester (PET), but also natural fibers. - Geotextile-related products such as geogrids (GGR) and geonets (GNT)
Consist of a mostly three-dimensional net-like structure made of synthetic materials, mostly polyethylene (PE) or polypropylene (PP). - Sealing membranes such as geosynthetic plastic sealing membranes (GBR-P, KDB)
Flexible, flat materials made from synthetic plastics such as polyethylene (PE), polyvinyl chloride (PVC-P), flexible polyolefins (FPO) or EPDM. They are characterized by their impermeable properties and are used as barriers to prevent the seepage of liquids or gases. - Geosynthetic bitumen sealing membranes (GBR-B)
Consist of a glass and/or polyester fleece impregnated with polymer bitumen, which performs the sealing function. The surfaces are typically coated with sand or slate or covered with a thin non-stick film. - Geosynthetic clay membranes (GBR-C)
Also known as bentonite mats, these are a combination of textile carrier layers and bentonite, a natural clay with high swelling capacity. These membranes are used as sealing systems in construction projects to prevent the penetration of water or other liquids. - Geocomposites for drainage (GCD)
Also known as drainage mats, geosynthetics are used for drainage in construction projects. They consist of a combination of an inner drainage layer and filter layers, usually on both sides, to collect and drain water while maintaining the structure of the soil to be drained. These materials offer an efficient solution for water drainage in various geotechnical applications. - Geosynthetics for erosion control (GEC)
Also commonly referred to as erosion control mats, these are special materials designed to prevent or reduce soil erosion caused by wind, water, or other environmental factors. These materials can include natural or synthetic geotextiles, geomats, and other geosynthetics that are used on the earth's surface to minimize soil erosion. - Geobands (GST), geomats (GMA)
- and much more
Contact us, we will be happy to help you!
Our committee work
- CEN/TC 189 Geosynthetics
- ISO/TC 221 Geosynthetics
- NA 106-01-11 AA Geotextiles and Geosynthetics
Additional services
- Notified body for CE
- IVG – co-sponsorship
- SVG member of the board
- Recognized testing, monitoring, and certification body at DIBt
- Recognized testing and monitoring body of BAM
- DB Netz AG recognized testing body
- Recognized testing body for tests in accordance with NorGeoSpec
- Recognized testing agency according to RAP Stra 15
Wir prüfen für Sie nach zahlreichen gängigen Normen
- Thickness: EN ISO 9863-1, ASTM D 5199, ASTM D 5994
- Area-related mass: EN ISO 9864, EN 14196, ASTM D 5993
- Structure height (asperity height): ASTM D 7466
Further information on physical and chemical tests
- Tensile test on wide strip: EN ISO 10319, ASTM D 4595
- Tensile test (grab test): ASTM D 4632
- Strip tensile test: EN ISO 13934-1
- Tensile test (single strand test): ASTM D 6637
- Tensile test: EN ISO 527-1, -3
- Tear resistance (trapezoidal method): ASTM D 4533/D 4533M
- Tear resistance (nail shaft): EN 12310-1
- Tensile test of joints/seams: EN ISO 10321
- Knot strength: GRI GG2, ASTM D 7737/D 7737M
- Creep and stress-rupture behavior: EN ISO 13431
- Short-term pressure behavior: ASTM D 6364, EN ISO 25619-2
- Pressure creep behavior EN ISO 25619-1
- Multi-axial tensile stress (burst test): ASTM D 5617, DIN 61551, EN 14151
- Resistance to impact (ball drop test): EN 12691
- Stamp penetration test (CBR test): EN ISO 12236, ASTM D 6241
- Dynamic penetration test (cone drop test): EN ISO 13433
- Simulation of installation damage: EN ISO 10722
- Protective performance test: EN 13719
- Protective performance under impact load: EN ISO 13428
- Friction properties (shear box test): EN ISO 12957-1, ASTM D 5321/D 5321M
- Pull-out test: DIN 60009
- Folding at low temperatures: EN 495-5
- Coefficient of linear expansion: ASTM D 1204
Further information about Mechanical testing
- Characteristic opening width: EN ISO 12956
- Water drainage capacity in the plane: EN ISO 12958, ASTM D 4491/D 4491M
- Water permeability normal to the plane without load: EN ISO 11058-1
- Water permeability under load: DIN 60500-4
- Resistance to water penetration: EN 13562
- Watertightness: EN 14150
- Chemical resistance in landfill construction: EN 14414
- Microbiological resistance (burial test): EN 12225
- Resistance to acids and alkalis: EN 14030
- Hydrolysis resistance: EN 12447
- Weather resistance: EN 12224, ASTM D 7238
- Oxidation resistance: EN ISO 13438, oven storage
or high-pressure autoclave test - Stress crack resistance (NCTL test): EN 14576, ASTM D 5397, EN ISO 24576
- Resistance to roots (lupine test): CEN/TS 14416
- Resistance to roots: EN 13948 and FLL guideline Root resistance
- Resistance to leaching: EN 14415
- Strain Hardening Test: EN 17096
- Oxidation induction time (OIT): ISO 11357-6, ASTM D 3895
- HP-OIT: ASTM D 5885
- Carbon black content: ASTM D 1603, ISO 11358
- Carbon black dispersion: ASTM D 5596
- Melt mass flow rate (MFR): ASTM D 1238a, EN ISO 1133-1
- Density: EN ISO 1183-1
- Water vapor permeability: ASTM E 96, EN 1931
- Fire behavior: EN ISO 11925-2, 13501-1
- TL/TP-ING: TL/TP KDB, TL/TP SD
- ÖBV guideline for tunnel waterproofing
- BAM approval guidelines
- DIBt approval and testing principles for LAU systems
- Harmonized standards, e.g., EN 13249 ff., EN 13491 ff., EN 13967
- and many more
We certify your products
After successful testing, we certify the quality of your geosynthetics in accordance with the applicable harmonized standards
such as EN 13249 ff., EN 13491 ff., EN 13967 , as well as IVG, SVG, and DIBt.
For more information, please refer to the section Product Certification.
State-of-the-art equipment for the best results and products
In our various laboratories and test rooms, we have a wide range of testing equipment at our disposal for different testing procedures.
Root penetration test
according to the FLL methodn
Green roofs are becoming increasingly attractive as green oases and habitats for many species. However, the vegetation poses a particular challenge for roof waterproofing. Only root-resistant waterproofing membranes and coatings can prevent moisture from penetrating the building structure.
Read more
High-pressure autoclave test
Would you like to estimate the service life of your product? Will it last 20, 50, or more than 100 years? Then our high-pressure oxygen autoclaves can provide you with the answer.
Read more
97076 Würzburg
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SKZ – Testing GmbH
Technologie-Zentrum
Friedrich-Bergius-Ring 22
97076 Würzburg
Tel. +49 931 4104-0
