Geomembrane welding seam quality inspection

Geomembrane Field Testing Methods 1. Inflating method The geomembrane is welded into two strips, leaving a cavity of about 10mm between the two strips. Seal both ends of the section to be tested and insert a gas needle. Inflate to 0.15MPa~0.20MPa, observe the vacuum gauge for 5 minutes, if the air pressure does not drop, it indicates that there is no leakage and the weld is qualified, otherwis...