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Geomembrane testing indicators include the following items:
Main indicators include membrane thickness and tensile strength, elongation at break, puncture resistance, right-angle tear strength, carbon black content, water vapor permeability coefficient, oxidation induction time, etc.
Analysis of HDPE geomembrane testing steps:
Step 1, on-site cutting and sampling, according to 5 samples of 20cm in length and width each. Weigh them separately to obtain the mass per unit area of HDPE geomembrane.
Step 2: On the same horizontal plane of the HDPE geomembrane waterproof material, measure the thickness at intervals of 25cm, and find the average value which is the thickness of the membrane.
Step 3: Use tensile equipment to test the breaking strength and elongation rate of the 20cm geomembrane sample.
Step 4: Fix the geomembrane sample on the middle hole container, and use puncture equipment to test the bursting strength.
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