7 performance requirements of hdpe geomembrane liners

Introduction of Geomembrane Welding Machine

Geomembrane welding machine is a kind of equipment specially used for connecting and welding geomembrane materials. It usually uses heat fusion or high frequency vibration to heat two pieces of geomembrane through heat fusion or high frequency vibration, so that they can fuse with each other under a certain temperature and pressure to form a strong connection.

The use of geomembrane welding machine can improve the efficiency and quality of geomembrane construction, and ensure the strength and sealing of the connection parts. It is widely used in waterproof engineering, sewage treatment, environmental protection, tunnel engineering and other fields.

When choosing a geomembrane welding machine, some factors can be considered, such as welding method, welding speed and efficiency, control and adjustment functions, welding quality and stability, ergonomic design, functional accessories and accessories, after-sales service and technical support, etc.

According to specific needs and actual conditions, comprehensive evaluation and selection are carried out to find the most suitable geomembrane welding machine.

7 performance requirements of hdpe geomembrane liners

High strength: The geomembrane needs to have sufficient tensile strength and tear strength to withstand external mechanical action and deformation.

Aging resistance: The geomembrane needs to have good aging resistance and be able to resist the erosion of ultraviolet rays, oxidation, acid and alkali and other environmental factors for a long time.

Good permeability resistance: geomembrane should have excellent waterproof performance, effectively prevent the penetration and leakage of water, liquid and gas.

Good chemical stability: The geomembrane should have high chemical stability under different environmental conditions, and be able to resist the corrosion of chemical substances such as acid, alkali, and salt.

Heat resistance and cold resistance: The geomembrane needs to have certain heat resistance and cold resistance, and be able to maintain its stable performance in high or low temperature environments.

Good flexibility and plasticity: The geomembrane should have certain flexibility and plasticity to adapt to complex shape changes and construction requirements in the project.

Environmental friendliness: The geomembrane must meet environmental protection standards, contain no harmful substances, and have no pollution to the surrounding environment and water bodies.

These performance requirements can vary according to specific engineering requirements and application fields. Therefore, when choosing a geomembrane, it is necessary to comprehensively consider and evaluate it according to the actual situation.

5 common inspection standards for geomembranes

GB/T 17643-2011 “Plastic Geomembranes”: This standard is applicable to the inspection and classification of plastic geomembranes such as polyethylene and polypropylene.

ASTM D4439-12 “Standard Specification for Polyethylene Geomembrane Sheet”: This standard is issued by the American Society for Testing and Materials (ASTM), and is applicable to the quality requirements and test methods of polyethylene geomembrane.

GRI GM13 “Test Methods for Testing Geomembrane Seams”: This standard was developed by the Geographic Membrane Research Institute (GRI) to test the quality and strength of geomembrane seams.

ISO 10318-1:2008 “Geosynthetics – Determination of index tensile properties of geotextiles by the strip method – Part 1: Wide-width tensile test”: This standard is issued by the International Organization for Standardization (ISO) to determine the stretch of geotextiles performance.

EN 13361:2009 “Geosynthetics – Determination of puncture resistance”: This standard applies to the puncture resistance test of geomembranes, and specifies the corresponding test methods and requirements.

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