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Aquaculture geomembrane

Geomembrane paving is completed, should minimize walking on the membrane surface, moving tools, etc., where the geomembrane can cause harm to the object, should not be placed on the membrane or carry walking on the membrane, so as not to cause accidental damage to the membrane. When laying geomembrane, we should strive to weld less, under the premise of ensuring the quality of welding, and try to save raw materials. The lap width of the joints between the membrane and the membrane is generally not less than 10cm, and the weld seams are usually arranged parallel to the larger slope, i.e. along the direction of the slope.

Classification :

Aquaculture Geomembrane

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PRODUCT DETAILS

Purpose of action

Environmental protection engineering: landfill, sewage treatment plant, chemical wastewater pond, power plant regulating pond, industrial/medical waste landfill, ash field, evaporation pond seepage control.

Petrochemical: petrochemical refinery tanks, oil well sludge ponds, chemical reaction ponds, sedimentation ponds, tailings dams, bottom lining, secondary lining seepage control. Secondary lining seepage control.

Chemical and mining industry: the bottom lining seepage control of ash field, red mud pile, heap leaching pool, dissolving pool, sedimentation pool, tailings dam.

Aquaculture: lining of aquaculture ponds, fish ponds, shrimp ponds, seepage control of sea cucumber rings and slopes.

Construction engineering: subway, underground garage, roof garden, sewage pipe, seepage control of dredging culvert.

Agriculture, forestry and animal husbandry: seepage control of reservoirs, cisterns, drinking water pools and irrigation systems.

Salt chemical industry: seepage control of salt crystallization ponds, brine ponds and salt membranes.

Construction technology

Technical indicators

Linear low-density polyethylene geomembrane for environmental protection (GL-2 type)

NO.	Item	Indicator
NO.	thicknesses mm	0.50	0.75	1.00	1.25	1.50	2.00	2.50	3.00
1	densities g/cm³	≤0.939
2	Tensile breaking strength (longitudinal and transverse) N/mm	≥13	≥20	≥27	≥33	≥40	≥53	≥66	≥80
3	Elongation at break (longitudinal and transverse) %	≥800
4	2% positive cut modulus N/mm	≤210	≤370	≤420	≤520	≤630	≤840	≤1050	≤1260
5	Right angle tearing load (longitudinal and transverse) N	≥50	≥70	≥100	≥120	≥150	≥200	≥250	≥300
6	puncture strength N	≥120	≥190	≥250	≥310	≥370	≥500	≥620	≥750
7	Carbon black content %	2.0～3.0
8	Carbon Black Dispersibility	No more than 1 out of 10 data at level 3, not allowed at levels 4 and 5
9*	Oxidation induction time(OIT) min	Atmospheric pressure oxidation induction time ≥100
9*	Oxidation induction time(OIT) min	High pressure oxidation induction time ≥ 400
10	Thermal aging at 85 ℃ (OIT retention at atmospheric pressure after 90d) %	≥35
11*	UV resistance (OIT retention after UV irradiation for 1600h) %	≥35
Note: The technical performance index requirements for thickness specifications not listed in the table are implemented in accordance with the interpolation method.
The atmospheric pressure OIT (retention) and the high pressure OIT (retention) of the two indicators 9 and 11 can be tested for either one.