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Impervious geomembrane testing items, how to test the welding seam?

Impervious geomembrane testing items, how to test the welding seam?

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  • Time of issue:2019-08-13
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(Summary description)It is reported that as early as the 1970s and 1980s in Europe, anti-seepage geomembrane was widely used in various projects such as waste disposal sites, landfills, artificial lakes, reservoirs, traffic tunnels, petrochemical mining, etc. With the rapid economic growth of my country Development, environmental protection has become the top priority of our country. The year before the first year, that is, in November 2016, the State Environmental Protection Administration officially changed its name to the Ministry of Ecology and Environment. Membrane is strongly advocated and widely used, and it has played a "fullest" in the main body of environmental protection engineering anti-seepage.

Impervious geomembrane testing items, how to test the welding seam?

(Summary description)It is reported that as early as the 1970s and 1980s in Europe, anti-seepage geomembrane was widely used in various projects such as waste disposal sites, landfills, artificial lakes, reservoirs, traffic tunnels, petrochemical mining, etc. With the rapid economic growth of my country Development, environmental protection has become the top priority of our country. The year before the first year, that is, in November 2016, the State Environmental Protection Administration officially changed its name to the Ministry of Ecology and Environment. Membrane is strongly advocated and widely used, and it has played a "fullest" in the main body of environmental protection engineering anti-seepage.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2019-08-13
  • Views:0
Information

It is reported that as early as the 1970s and 1980s in Europe, anti-seepage geomembrane was widely used in various projects such as waste disposal sites, landfills, artificial lakes, reservoirs, traffic tunnels, petrochemical mining, etc. With the rapid economic growth of my country Development, environmental protection has become the top priority of our country. The year before the first year, that is, in November 2016, the State Environmental Protection Administration officially changed its name to the Ministry of Ecology and Environment. Membrane is strongly advocated and widely used, and it has played a "fullest" in the main body of environmental protection engineering anti-seepage.

How to test the welded seam of impermeable geomembrane?

When welding, the overlap between the anti-seepage membrane and the anti-seepage membrane should not be less than 10 cm. At the same time, minimizing the welding seam can save the cost of materials and improve the stability of the anti-seepage system. Generally, two methods are used to detect welding seams: the first method is to use air pump, pressure gauge and hollow needle to detect; the second method is to use vacuum pump to detect. The first method requires inserting a hollow needle into the welding seam to pressurize the entire welding seam and block the two edges of the welding seam, and then detect the change of air pressure, the second method does not need to damage the impermeable membrane. Apply soap liquid to press the vacuum pump to pressurize the soap liquid to detect the change of the airtight air pressure in the welding seam. The air pressure of the air pump can reach and maintain 250KPA within 2 minutes, and then observe for 10 minutes. The allowable pressure drop is within 10KPA. If the drop is greater than 10KPA, the welding is unqualified, and it needs to be repeated more than ten times.

Impermeable geomembrane is abbreviated as Impermeable Membrane, and its main function is to prevent seepage and isolation. The normal specification is a roll of 300 square meters with a width of 6 meters X a length of 50 meters and a roll of 300 square meters. Because this width and length cannot meet the requirements of large engineering projects, the double-track hot-melt welding machine or KS hot-melt adhesive (geotechnical Film special glue) bonding. Of course, small fish ponds or lotus ponds can be bonded with KS hot-melt adhesive in consideration of cost. For large projects, technicians and construction masters need to be arranged to guide and construct welding. The anti-seepage geomembrane has "great power" in the anti-seepage system of various environmental protection projects.

Shandong Jianbiao Technical Testing and Testing Co., Ltd. (JBJC for short) is a testing and testing organization with CMA testing qualification approved by the State Bureau of Quality and Technical Supervision and established in accordance with the law. In order to ensure the ecological safety of environmental protection projects, Shandong Jianbiao Technology Test and Inspection Co., Ltd. was established in August 2016. The company is engaged in the detection of environmental protection related materials such as building waterproof materials, geosynthetics, and leakage detection of anti-seepage engineering anti-seepage systems. With the large-scale application of anti-seepage materials and building waterproof materials in related projects, the safety of project leakage directly affects the safety and quality of the project. Leakage detection can objectively, fairly, scientifically and effectively supervise the project quality to truly ensure anti-seepage The quality and safety of the project.

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