Experimental investigation of the permeability of composite geomembrane

High density polyethylene composite geomembrane is used as a test material and the flexible wall permeameter is used to calculate the coefficient of the composite geomembrane.Changes in hydraulic coefficients with osmotic pressure and osmotic stress path are analysed.Scanning electron microscope photographs from microcosmic structure reveals the reason for the changes in hydraulic coefficients.The test results show that the flexible wall permeameter can accurately determine the geomembrane hydra...