EN ISO 12236 - STATIC PUNCTURE TEST (CBR TEST)


The static puncture resistance is tested by measuring the force (N) necessary to push a steel plunger of 50 mm diameter through the sample of geotextile, under a speed of 50 mm/min.
The sample of geotextile is fixed between two steel rings with internal diameter 150 mm, so that it can be deformed under the action of the central load up to the achievement of the puncture breaking force.