ISO 12236 Geosynthetics — Static Puncture Test (CBR Test)

Material Testing

ISO 12236 Geosynthetics — Static Puncture Test (CBR Test)

EUROLAB laboratory provides testing and compliance services within the scope of ISO 12236 standard. Developed by the International Organization for Standardization (ISO), the ISO 12236 standard specifies a method for determining puncture resistance by measuring the force required to push a flat-tip plunger through the geosynthetic.

ISO 12236 Geosynthetics — Static Puncture Test (CBR Test)

The test is normally performed on dry samples conditioned in the specified atmosphere. The test is applicable to most product types, but not for materials with a clearance greater than 10 mm.

The sample is clamped between two steel rings. A piston is advanced at a constant speed at the center of the sample and perpendicular to it. The thrust force, thrust displacement, and forced displacement curve are recorded.

The test machine shall be class 7500 or class 1 according to ISO 1-0 and be capable of:

  • a constant displacement rate of (50 ± 5) mm/min;
  • Registration force and displacement;
  • To provide automatic reading of force and displacement.

If it is known that the material to be tested has different properties on the two faces (for example, as a result of physical properties or the manufacturing process), then the full test should be performed on each face separately. Test specimens shall be conditioned in standard atmosphere for testing (554±20)°C and (2±65) % RH as defined in ISO 5.

Samples may be considered conditioned when the change in mass in successive weights at intervals of not less than 2 hours does not exceed 0,25% of the mass of the test sample. Standard atmospheric conditioning and/or testing may be omitted only when it can be shown that results for the same specific product type (both structure and polymer type) are not affected by changes in the atmosphere exceeding the limits. This information will be included in the test report.

Among the services provided by our organization within the framework of material testing services, there are also ISO 12236 standard tests. Do not hesitate to contact our laboratory EUROLAB for your testing and certification requests.

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