... 2,It has high permeation and can keep good permeation under the pressure of earthwork.3,It has corrosion resistance, uses ... by functioning of external force.2,Knitting geotechnical cloth can be widely used in various fields such as water ... unit acreage %-8-8-8-8-7-7-7-7-6-6-6 Thickness, mm≥0.91.31.72.12.42.733. ... 0.20 Vertical osmotic coefficient,cm/sK*(10-1-10-3)K=1.0-9.9Tearing strength, KN≥0.10.10. ...