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Cone Drop Test Apparatus (AIM 247)

In this test, a geosynthetic or geotextile is clamped to yield a clear diameter of 150 mm and a brass cone of 45 degree angle included, having a weight of 1 kg, is dropped through a height of 500 mm. The diameter of the resultant hole is measured with a graduated conical device. The smaller the hole, the greater the resistance of geosynthetic/ geotextile to damage. When used in combination with other direct tensile test results, it provides a convenient means of qualitative comparison.