Composite geotechnical membrane: Composite geotechnical membrane is recombined by Dacron needle-punched geotechnical cloth & membrane pressed from polyethylene and PVC, the type such as one piece of cloth for one piece of membrane, two pieces of cloth for one piece of membrane.

Specification: Mass of unit area 200-1600g/ m² and width 1-5m

Performance:  High strength, good extensibility and deformability, acid proof and alkali-resistance, ageing-resistance, seepage proofing etc.

Usage: Mainly used in construction for preventing seepage , isolating, reinforcing, horizontal draining, treating slurry, especially suitable for preventing and curing project of the flood peak high, water pressure and lateral pressure.

Technical index

  Item

unit

Area mass （g/m²）/membrane thickness（mm）

150/0.2

200/0.2

100/0.2/100

150/0.2/150

150/0.3/150

mass of unit area

g/m²

350

400

400

500

600

Tensile

intensity

warp

KN/m

5.0

5.6

5.9

8.1

11.2

weft

KN/m

5.5

6.2

6.5

8.9

12.2

extensibility

warp

%

52

59

50

48

40

weft

%

53

60

45

51

32

CBR retorting strength

KN

1.1

1.3

1.5

1.9

2.4

 osmotic coefficient

cm/s

    According to the design or contract regulation