Geomembrane from Feicheng Lianyi Engineering Plastics Co Ltd

Application:

Earthwork dam, rock-fill dam, masonry dam and concrete dam; horizontal impervious blanket of embankment and dam front, vertical impervious barrier of foundation; tailing dam, dam body and reservoir region of sewage reservoir; construction cofferdam; canal, liquid bath (pit, coffin pit); waste storage; seepage control lining for subway, basement and tunnel; roadbed of speedway and railway; salting prevention of roadbed and other foundation; waterproofer of swelling soil and collapsible loess; roofing leak resistance.

Products: Two-side seepage control membrane and one preventive geotextile; one-side seepage control membrane and preventive geotextile.

Width: 4-6m.

Specification: membrane thickness 0.2mm-0.8mm; protective geotextile 100g/m2-800g/m2 (produced by our factory, conforming to the related national standard).

Table: Basic Technological Requirement：

SI No.	Items	Indices	Allowance, %
1	Mass-area ratio, g/m2	According to design or contractual specifications	-10
2	Width, cm	According to design or contractual specifications	-1.0
3	CBR bursting strength, KN	According to design or contractual specifications	-5
4	Breaking strength 1)，KN/m	According to design or contractual specifications	-5	Vertically and horizontally
5	Tearing extensibility %	Adherence to specification	30～100	Vertically and horizontally
6	Ripping strength *, KN	According to design or contractual specifications	-8	Vertically and horizontally
7	Stripping strength **, N/cm	6	Not below the standard	Vertically and horizontally
8	Resistance to hydrostatic pressure, Mpa	According to design or contractual specifications	Not below the standard
9	Permeability coefficient, cm/s	According to design or contractual specifications	Adherence to specification

* For the strength requirements of common short-fiber needling nonwovens/polyethylene composite geomembrane, see Table below

** If the sample is tested hard to predict its stripping and not beyond the high strength base material and membrane material, it will be regarded as qualified one.

Table: Strength Standard for Short-fiber Needling Nonwovens/Polyethylene Composite Geomembrane：

Mass-area ratio	400	500	600	700	800	900	1000	Remark
Strength requirement\membrane thickness, mm	0.25～0.345			0.3～0.5
Breaking strength, KN/m 5		7.5	10.0	12.0	14.0	16.0	18.0 Vertically and horizontally
CBR bursting strength, KN 1.1		1.5	1.Strength requirement\membrane thickness, mm 9	2.2	2.5	2.8	3.0
CBR bursting strength ，KN   1.1		1.5	1.9CBR bursting strength, KN 1.1	2.2	2.5	2.8	3.0

Note: When the practical specification is between the neighboring specifications in the table, the related check indicators will be calculated according to the interpolation method; if the product specifications is beyond the table given scope or it is with other process or construction, the check indicators carry out the design or negotiated by the supplier and demander.