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Geomembrane

Composite geomembrane

Composite geomembrane is made by combining geotextile and geomembrane through thermal compounding or adhesive bonding processes.

Composite geomembranes have various outstanding advantages. Firstly, it combines the reinforcement effect of geotextiles with the anti-seepage performance of geomembranes, making it more versatile in engineering applications. Geotextiles can enhance the tensile strength of composite geomembranes, preventing them from being stretched and damaged during construction and use, while geomembranes provide reliable anti-seepage barriers.

Secondly, the composite geomembrane has good corrosion resistance and anti-aging performance, and can work stably for a long time under harsh environmental conditions.

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FREQUENTLY ASKED QUESTIONS

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What is the thickness of HDPE geomembrane?

Usually 0.3-3mm, customization is acceptable.

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Can the geomembrane be covered with soil?

The geotextile usually needs to be backfilled with a soil layer for protection, such as lotus ponds and fish ponds, which require backfilling with a 20 cm soil layer.

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What are the application areas of HDPE geomembrane?

HDPE geomembrane can fully meet the application requirements of industries such as sanitation, water conservancy, construction, municipal engineering, gardening, petrochemicals, mining, salt industry, agriculture, and aquaculture.

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What is the general service life of geomembranes?material is PVC drainage pipe made of?

The service life of geomembranes is a range, and the specific years depend on many factors. The service life when exposed to the outside can reach more than 5 years; when used underground, it can reach more than 50 years.

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What are the types of geomembranes?

There are many types of geomembranes, mainly including HDPE, LDPE, PVC, composite geomembranes, etc. Dingrun specializes in the production of geomembranes, welcome to consult.

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SPECIFICATIONS

Execution standard for composite geomembrane GB/T 17642-2008
Mass per unit area（g/m2）		400	500	600	700	800	900	1000	1100
Common PE film thickness		0.2-0.35			0.3-0.6
Common specifications	One cloth, one film	150/0.25	200/0.3	300/0.3	300/0.4	300/0.5	400/0.5	400/0.6
Common specifications	Two fabrics and one film	100/0.2/100	100/0.3/100	150/0.3/150	200/0.3/200	200/0.4/200	200/0.5/200	250/0.5/250
Nominal fracture strength（KN/m）		5	7.5	10	12	14	16	18	20
Longitudinal and transverse fracture strength（KN/m）≥		5	7.5	10	12	14	16	18	20
Longitudinal and transverse standard strength corresponding to elongation%		30~100
CBR top breaking strength rate/KN≥		1.1	1.5	1.9	2.2	2.5	2.8	3	3.2
Longitudinal and transverse tearing strength ratio/KN≥		0.15	0.25	0.32	0.4	0.48	0.56	0.32	0.7
Resistant to hydrostatic pressure/MPa		0.2	0.3	0.4	0.5	0.6	0.7	0.8	1
	One cloth, one film	0.4	0.5	0.6	0.8	1	1.2	1.4	1.6
	Two fabrics and one film	0.5	0.6	0.8	1	1.2	1.4	1.6	1.8
Peel strength /（N/cm）		6
Vertical permeability coefficient/（cm/s）		According to design or contract requirements
Width deviation/%		-1