Product introduction

Composite geomembrane is a geotextile and geomembrane composite impermeable materials, mainly used for seepage control, is divided into a cloth and a membrane and two cloth and a membrane, tensile, tear resistance, top broken and other physical and mechanical properties of the index is high, can meet the water conservancy. Municipal, construction, transportation, subway, tunnel and other engineering needs. Because of its selection of polymer materials and production process added anti-aging agent, it can be used in non-conventional temperature environment. Is a layer of geotextile and - layer of polymer materials (generally membrane materials) after calendering or hot melt It is a geosynthetic material made of - layer of geotextile and - layer of polymer material (usually membrane) through calendering or hot melt.

Construction technology

Composite geomembrane paving is divided into two parts: paving at the bottom of the channel and paving on the slope. Laying method: horizontal rolling along the channel axis direction. Slope paving in the slope after acceptance, from the direction of the slope axis rolling, and the bottom of the composite geomembrane connection using J-shaped connection. Paving should be carried out in dry days, in order to facilitate splicing, to prevent stress concentration, paving using wave-shaped relaxation, the degree of richness of about 1.5%, spread out in a timely manner after pulling flat, the requirements of the membrane and the slope anastomosis flat, no protruding wrinkles, the construction personnel should wear flat-soled cloth shoes or soft rubber shoes, prohibited to wear spiked shoes, in order to avoid stepping on the bad, construction, such as the discovery of the damage of the geomembrane should be repaired in a timely manner.

Performance characteristics

High physical and mechanical indexes such as tensile, tear resistance, top breakage, etc. The product has high strength, good elongation performance, large deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance, good seepage control performance, etc. Aging resistance, good seepage resistance and other characteristics.

Purpose of action

1. Roadbed, roof seepage prevention.

2. river embankment, lake dam, tailing dam, sewage dam reservoir, channel, liquid storage pool (pit, mine).

3. Road, highway, railroad foundation.

4. embankment, dam horizontal impermeable cover, foundation vertical impermeable layer, construction weir, waste yard.

5. seawater, freshwater farms.

6. landfill, sewage or waste treatment seepage control.

7. subway, basement and tunnel, tunnel seepage control lining.

 

Technical indicators

Technical indicators of staple fiber needled nonwoven composite geomembrane ( GB/T 17642-2008 )

item		指   标
		400	500	600	700	800	900	1000	note
rupture strength Kn/m		5.0	7.5	10.0	12.0	14.0	16.0	18.0	vertically and horizontally
Elongation at break %		30~100							vertically and horizontally
CBR Top Break Power kN≥		1.1	1.5	1.9	2.2	2.5	2.8	3.0
tearing force kN≥		0.15	0.25	0.32	0.4	0.48	0.56	0.62	vertically and horizontally
peel strength N/cm		6
vertical permeability coefficient		As required by the design contract
item		Membrane Thickness /mm
		0.2	0.3	0.4	0.5	0.6	0.7	0.8	1.0
Hydrostatic pressure resistance / Mpa≥	lit. one cloth, one membrane	0.4	0.5	0.6	0.8	1.0	1.2	1.4	1.6
	two cloth, one membrane	0.5	0.6	0.8	1.0	1.2	1.4	1.6	1.8