The vertical permeability tester for geosynthetics is a horizontal constant head tester designed and manufactured in accordance with the requirements of the new national standard GB/T15789-2016 and the new release of the Ministry of Communications of the "Highway Engineering Geosynthetics Test Regulation JTG E50-2006". It is suitable for testing the vertical permeability of various geotextiles and composite fabrics with water permeability under constant water head.

GB/T15789-2016 Method A

JTG E50-2006 "Test Regulations for Geosynthetics of Highway Engineering"

T114-2006 vertical performance test (constant head method)

The velocity of water flowing perpendicular to the plane of the geotextile under the unit hydraulic gradient (mm/s)