Complex Geomembrane
A.Characteristics of Complex Geomembrane
Complex Geomembrane is of Geosynthetics,this complex anti seepage material is composed of geotextile and geomembrane by the method of heat bonding,there are long fiber complex gemembrane and short fiber complex geomembrane.Long fiber complex geomembene is composed of continuous filament needle punched geotextile and geomembrane.Short fiber complex geomembrane is composed of stable fiber geotextile and geomembrane.It functions as anti-seepage, reinforcement,protection,separation and horizontal drain when used in project Moreover, this material shortens the time limit for projects and reduces the engineering cost.
B.Applications of Complex Geomembrane
In geotechnical engineering, Complex geomembrane mainly functions as anti-seepage and separation.Meanwhile,reinforcement and protection emerge together.It funtions as anti-seepage in projects such as earth rock fill dam,rock fill dam, masonry dam,concrete dam,sewage dam, and,channel,reservoir, subway basement,tunnel,road, railway, groundwork,etc.
C.Technical parameters of Complex Geomembrane
Technical Characteristics of Continuous Filament Needle Punched Non Woven/Polypropylene Complex Geomembrane
|
g/ m2
|
500g
|
450g
|
600g
|
650g
|
900g
|
Remark
|
|
Structure
|
Geotextile-
geomembrane
|
Geotextile-
Geomembrane-gentextile
|
Geotextile-
Geomembrane-
gentextile
|
Geotextile-
Geomembrane-
gentextile
|
Geotextile-
Geomembrane-
gentextile
|
|
Thickness
|
0.35mm
|
0.20mm
|
0.35mm
|
0.35mm
|
0.50mm
|
|
Tensile Strength, KN/M ≥
|
10.5
|
16
|
20
|
22
|
25
|
MD/CD
Average
|
|
CBR Puncture Strength, KN ≥
|
2.2
|
3.0
|
3.2
|
3.9
|
4.0
|
|
|
Tearing Strength, KN ≥
|
0.30
|
0.38
|
0.50
|
0.55
|
0.70
|
MD/CD
Average
|
Technical parameter (GB/T 17642-1998) for Staple Fiber Punched Non-Women/Polypropylene
Complex Geomembrane
|
g/ m2
|
400
|
500
|
600
|
700
|
800
|
900
|
1000
|
Remark
|
|
Thickness
|
0.25-0.35mm
|
0.30-0.50mm
|
|
Tensile Strength
|
5.0KN
|
7.5KN
|
10.0KN
|
12.0KN
|
14.0KN
|
16.0KN
|
18.0KN
|
MD/CD
Average
|
|
CBR Puncture Strength
|
1.1KN
|
1.5KN
|
1.9KN
|
2.2KN
|
2.5KN
|
2.8KN
|
3.0KN
|
|
|
Tearing Strength
|
0.15KN
|
0.25KN
|
0.32KN
|
0.40KN
|
0.48KN
|
0.56KN
|
0.62KN
|
MD/CD
Average
|
Complex Geomembrane Hydraulic Pressure Resistance Stipulated Value(GB/T 17642-1998)
|
Thickness (mm)
|
0.2
|
0.3
|
0.4
|
0.5
|
0.6
|
0.7
|
0.8
|
|
Geotextile-Geomembrane
|
0.4
|
0.5
|
0.6
|
0.8
|
1.0
|
1.2
|
1.4
|
|
Geotextile-Geomembrane-Geotextile
|
0.5
|
0.6
|
0.8
|
1.0
|
1.2
|
1.4
|
1.6
|
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