How to control the quality of geomembrane composite with non-woven?.The quality of geomembrane composite with non-woven also needs to be controlled. As a professional geomembrane composite with non-woven manufacturer, Taian Hongyuan Geosynthetics Co., ltd. has been engaged in the wholesale of geomembrane composite with non-woven for many years. The editor will take you to learn together.

       1. The geomembrane composite with non-woven with raw material quality control entering the site must have a certificate of conformity, performance and characteristic indicators and instructions for use provided by the manufacturer. Otherwise, it cannot be used for engineering construction. The two-fabric one-membrane needle-punched geomembrane composite with non-woven is used in this project. The technical parameters of the designed geomembrane composite with non-woven are: design weight 900g / m2, film thickness 0.5mm, vertical permeability coefficient ≤10-12cm / s. After the geomembrane composite with non-woven came into the field, the geomembrane composite with non-woven was randomly selected and its performance indexes were entrusted to the Nanjing Water Conservancy Research Institute Experimental Center for retesting, and the retesting results were all qualified.

       2. Control of the construction operation process Before the laying of the geomembrane composite with non-woven, the construction organization design should be compiled, the laying method and technical measures should be explained, and it should be used after being approved by the supervision. The construction personnel should wear flat-bottomed shoes or soft rubber-soled shoes. Step on the damaged geomembrane, so as to lay with the pressure, the laying of the geomembrane composite with non-woven should be coordinated with the laying of the protective layer. The quality of the geomembrane composite with non-woven welding seam in splicing is the key to splicing. In particular, the joint detection should be strengthened during construction. The detection method has a visual inspection method and two on-site leak detection. Visual method: After welding the geomembrane composite with non-woven, observe whether there is any missing joint, whether the joint is burnt, whether there is wrinkle, whether the splicing is even, etc. On-site leak detection adopts the inflation method to detect all the welds. The welds are double strips, with a cavity of about 10mm between the two. Seal both ends of the section to be tested, insert the gas needle, and inflate to 0.05mpa ~ 0.20 mpa, observe for 0.5min, observe the vacuum gauge, if there is no drop in air pressure, it shows no leakage, welding seam grid, otherwise you must find the cause and repair it in time. The anchoring of the upper and lower parts of the geomembrane composite with non-woven is an important link, and construction shall be carried out in strict accordance with the construction drawings and after acceptance by the supervisor.

       3. Quality inspection after construction. The quality inspection after construction is mainly a sampling test. A test piece is taken every 1000m2 for the tensile strength test. The strength should not be less than 80% of the base material, and the sample should not be broken at the joint, otherwise the joint quality will not be qualified. A total of about 45000m2 of geomembrane composite with non-woven was used in the whole project. A total of 43 sets of weld samples were taken on site for tensile strength test. The passing rate of the test was 100%, and the weld quality was qualified.