Product

Geocomposite PE Film

　　date:2016-12-30 09:16:18　　

How the Product be Produced

Geocomposite PE film is a new type of antiseepage material which is composited of polyester geotextile and geomembrane(PE, EVA, etc.). The new product is produced by the heating of infrared ray.

Specification

Weight:300-2500g/㎡， PE thickness:0.1-1.5mm, width:4m-6m.

Type of Geocomposite

A. One layer of PE film+one layer of geotextile

It is produced by thermal bonding with one layer of PE film and one layer of geotextile. The weight range of PE film: 100g-1500g/㎡，the weight of non woven geotextile: 200g-600g/㎡.The no woven geotextile is functioned as the protection layer. The geocomposite has high tensile strength and the property of anti-puncture. It can prevent the infiltration of water and has the function of drainage. It has perfect heat and cold resistance, chemical stability. It also has good anti-aging property, the resistance to corrosion and excellent anti-environmental stress cracking property. The geocomposite increase the frictional coefficient of PE film, has the good slip resistance.

B. Geotextile+PE film+Geotextile

It is produced by thermal bonding with one layer of geotextile+one layer of PE film+ one layer of geotextile. The weight range of PE film: 100g-1500g/㎡，the weight of non woven geotextile: 200g-600g/㎡. The PE film is functioned as the basic material of anti-infiltration, and the geotextile will increase the tensile strength and anti-puncture strength. It can also prevent the infiltration of water and has the function of drainage.

Application Property

1. Geocomposite is the product which geotextile is used as the potective layer for the PE film. This product can prevent the damage of PE film which is impermeable layer, and also decrease the diameter requirement of granule material under the geocomposite. The geocomposite has drainage function.

Its high friction coefficient will prevent the slippage of cover layer. Therefore, the slope ratio can be higher, the requirement for slope area of the project can be decreased.

The geocomposite has the advantage of high tensile strength, tear strength, CBR burst strength, puncture strength,etc. This product has the property of deformation, and this property can decentralize the stress of geocomposite at the hump and sunken area of covered underlayer in the project. The geocomposite has the warm keeping property, which can reduce the risk of damage due to frost heave of soil. The excellent anti-aging property of geocomposite decrease the cost for project maintenance.

2. Geocomposite has the advantage of easy installation which decrease the cost of project construction, and shorten the construction period.

Application

Seepage control for river and lake, underground construction project, landfill, chemical sewage pool, road and tunnel, water conservancy and hydropower project, landscape engineering of residential area, domestic sewage pool, Reservoir embankment, the basement of building, oil depot, etc.

Basic Technical Requirement

No	Items	Standard	Tolerance %	Remarks
1	Unit weight g/㎡	Accoding to design or contract	-10
2	Width,cm	Accoding to design or contract	-1.0
3	Break strength，KN/m	Accoding to design or contract	-5	MD &CD
4	Break elongation，%	30-100	According to design	MD &CD
5	Tear strength，KN	Accoding to design or contract	-8	MD &CD
6	CBR bursting strength，KN	Accoding to design or contract	-5
7	Peeling strength，N/cm	6	Not lower than standard	MD &CD
8	Static hydraulic pressure Resistance，MPA	Accoding to table 3	Not lower than standard
9	Coefficient of permeability，cm/s	Accoding to design or contract	According to design
1) 1. The strength requirement for geocomposite made by polyester short fiber non woven geotextile and PE film, refer to table 2. 2) 2. It will be regarded as qualified, when the geotextile or PE film break in the process of peeling test or can not peel apart.

Technical Standard of Geocomposite Formed by Polyester Short Fiber Non Woven Geotextile and PE Film

Unit weight(g/㎡)	400	500	600	700	800	900	1000
Thickness of PE film（mm）	0.2mm-0.8mm
Breaking strength(≥KN/M)	5.0	7.5	10.0	12.0	14.0	16.0	18.0
Breaking elongation( %)	30-100
Tear strength（≥KN）	0.15	0.25	0.32	0.40	0.48	0.56	0.62
CBR burst strength(≥KN)	1.1	1.5	1.9	2.2	2.5	2.8	3.0
Vertical permeability coefficient(cm/s)	10-12
Anti-static water pressure(≥Mpa)
Thickness of PE film（mm）	0.2	0.3	0.4	0.5	0.6	0.7	0.8
One layer of PE film+one layer of geotextile (Mpa)	0.4	0.5	0.6	0.8	1.0	1.2	1.4
Geotextile+PE film+geotextile (Mpa)	0.5	0.6	0.8	1.0	1.2	1.4	1.6
The geocomposite can be produced according to the requirement of the factory.

Technical Standard of Geocomposite Formed by Continuous Polyester Filament Non Woven Geotextile and PE Film

No.	Item	Technical data
1	Nominal breaking strength(KN/m)	4.5	7.5	10	15	20	25	30	40	50
2	Longitudinal breaking strength(≥KN/m)	4.5	7.5	10	15	20	25	30	40	50
3	Elongation at nominal breaking strength(%, MD &CD)	40-80
4	CBR burst strength(≥KN)	0.8	1.6	1.9	2.9	3.9	5.3	6.4	7.9	8.5
5	Tear strength（≥KN）MD&CD	0.14	0.21	0.28	0.42	0.56	0.70	0.82	1.10	1.25
6	Sieve size 0₉₀ (0₉₅) mm	0.05-0.20
7	Vertical permeability coefficient (cm/s)	Kx(10^-1-10^-3), K=1.0-9.9
8	Thickness ≥mm	0.8	1.2	1.6	2.2	2.8	3.4	4.2	5.5	6.8
9	Width variation(%)	-1
10	Variation of unit weight(%)	-10

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