How to Detect the Leakage of Composite Geomembrane?
For HDPE composite geomembrane construction, it is easy to ensure the quality of the construction after the construction. Everyone must also carry out certain leak detection. Only HDPE composite geomembrane based on the leak detection standard can really make full use of the required expected effects. So how can the leakage of HDPE composite geomembrane construction requirements be detected?
After construction, the leakage must be subject to rigorous testing. The composite geomembrane pressure testing uses aeration method to detect all welds. The welds are double. After the construction is completed, a sample test shall be carried out for the anti-seepage geomembrane construction. A test piece shall be taken every 1000m2. The filling pressure detection adopts the air pumping method to detect all the welds. The welds are double. Apply soapy water to the area with air bubbles on the welding seam and repair the welding again.
A total of welding seam samples were inserted into the air inlet needles at the construction site and inflated to 0.05mpa ~ 0.20mpa for 0.5 minutes. The inspection compliance rate was determined to achieve 100 weld quality. It is stipulated that the tensile strength of the test piece higher than 80 can be broken at the interface. It is forbidden to smoke on the spot or apply various fire source plans when the installation is simple and the composite geomembrane anti-aging method is laid with the waterproof layer.