Self-adhesive High Density Polyethylene Sheet

Self-adhesive High Density Polyethylene Sheet

Product Introduction The self-adhesive HDPE (High Density Polyethylene) waterproofing membrane sheet consists of there layers: Basic layer : HDPE membrane, Adhesive layer : Non-asphaltic polymer adhesive layer Protective layer : PE membrane/ Sand, mineral grain Due to its strong reactive bonding...

Product Details

Self-adhesive High Density Polyethylene Sheet

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Product Introduction 

The self-adhesive HDPE (High Density  Polyethylene) waterproofing membrane sheet consists of there layers:
 Basic layer:  HDPE membrane,
 Adhesive layer: Non-asphaltic polymer adhesive layer
 Protective layer: PE membrane/ Sand, mineral grain

Due to its strong  reactive bonding ability with post-poured concrete, it is specially suitable  for underground and tunnel waterproofing engineering use.

 

Product  category

According to the different surface  protective layer, the self-adhesive HDPE membrane can be divide into two types:

Structure    chart

Type

Item NO.

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Sand finish

 

 

DYP-811

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PE finish

 

 

 

DYP-812

 

Product advantages

1) Unique formula & perfect  waterproofing: The combination of non-asphaltic  adhesive and polymer
 sheet  enhance the product property of high tensile strength, impact resistance,  puncture resistance,  
 self-adhesive  and easy construction.
 2)Skin tight structure resists  "water breakthrough": The strong chemical  bonding between product and post-poured  
 concrete  forms a skin tight waterproof structure , which perfectly resist the water  breakthrough even if partial perforation
 or breakage occurs.

3)Anti-subsidence and anti-cracking: Product is installed by using pre-paving & inverted bonding  method, it has no
 structural  bonding to the substrate, so the product’s waterproof property is well  guaranteed even if ground subsidence
 occurs  to the substrate.
 4)Easy construction, less construction  time & cost: Due to the pre-paving &  inverted bonding method, the construction
 has  low requirements for the substrate or for the weather condition, no protective  layer is required.
 5)Safe construction & Eco-friendly: the construction requires no solvent, no fuel of any kind and no  hot gas welding also.
 6)Anti-Bacterium resistant & anti-mould: Theoretically this product has a durability of 100 years in  underground use.

 

 Product  Specification

Thickness/mm

1.2

1.5

1.7

2.0

Top surface

PE/Sand/Mineral Grain
       PE/S
       PE/S

Interlayer

            Non-asphaltic reactive adhesive

Bottom surface

HDPE sheet
       HDPE/EVA
       HDPE/EVA

Width/m

2
       2000
       2000

Length/m

20

20

20

15

 

Application Range

1.Underground  project: building basement & air-defense construction waterproof;

   

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2.Transportation  system project: railway, subway, highway & tunnels waterproof;


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 3) Environmental engineering: refuse  landfill, wastewater treatment plant & chemical pool;
 4) Water conservancy project: reservoir,  dam, water channel & artificial lake. Etc;


Executive Standard & Performance Index

Executive standard: GB/T23457-2009  Pre-paving/Wet-paving Waterproof Membrane

1

Item

Index

2

Tensile property

Tensile strength/(N/50mm) ≥

500

3

Membrane    elongation at break/% ≥

400

4

Nail tear resistance/N  ≥

400

5

Impact property

Dia(10±0.1)mm, no leakage

6

Static load

20kg, no leakage

7

Heat resistance

70℃, 2h, No displacement, flow or dripping

8

Low-temp bending

-23℃, no cracking

9

Anti-watermoving between layers

0.6Mpa, no water running

10

Peel strength from post-poured    concrete/(N/mm) ≥

No treatment

2.0

11

Cement powder contaminated surface

1.5

12

Sediment contaminated surface

1.5

13

Ultraviolet radiation aging

1.5

14

Thermal ageing

1.5

15

After immersed in water

1.5

16

Lap joint shearing strength/(N/mm) ≥

1.8

17

Thermal ageing (70℃, 168h)

Tension retain/% ≥

90

18

Elongation retain/% ≥

80

19

Low-temp bending

-23℃, no cracking

20

Thermal stability

Appearance

No wrinkles, sliding or flowing

21

Dimensional change/% ≤

2.0

 

Construction Method

  • For  tunnel

Process:
 Tunnel arch crown – snap lines – install  upholder(hanging nails) – pave DCPS membrane – mechanically fix DCPS membrane(tie  hanging tapes) – overlapping DCPS membrane – joint sealing - reinforcement  assembling – concrete lining.

  • For  underground project

Process:
 Level  surface: substrate cleaning – snap lines – pave  DCPS membrane – overlapping DCPS membrane – joint sealing – reinforcement  assembling – concrete lining.

Vertical  surface: substrate cleaning – snap lines – pave  DCPS membrane – mechanically fix DCPS membrane – overlapping DCPS membrane - reinforcement  assembling - concrete lining.
  

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Package
 Product is packed in rolls and wrapped by  plastic membrane.

Storage

  • Product should  be stored in a dry, ventilated and cool place with temperature lower than 45℃.

  • Do not  exposed to insolation and rain.

  • flat-wise  storage, with stacking height not over 5 layers. Any incline or crossover  should be prevented.

  • Under  normal storage condition, product shelf life is one year.

      

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Project Cases

Tunnels:


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Basement:


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Inquiry