1.  Product Description

This product is specially designed for underground engineering constructions with international advanced technology, iT can bind the later cast concrete form a firm structure. It takes the specially-made high density polyethylene (HDPE) film as waterproof base material, covered by self-adhesiveMembrane.  

2.  Advantages

·Strong chemical resistance, resistant to alkali water from concrete;

·Waterproof sheet material is full adhesiveon base, therefore it is not affected by settlement deformation;

·Perfect shock resistance and puncture resistance, it can bear the impact directly from construction load and reinforcement cage, no need for extra protection, being able to receive cast of reinforced concrete;

·Strong self-healing property of synthetic adhesive and outer surface elastic coating film, for the slight construction damage, it has the unique self-healing ability;

3.  Type and Specification

Thickness(mm)	Thickness of macromolecule material(mm)	Width(m)	Length(m)
1.2	0.7	1or2	20
1.5	1.0	1or2	20
1.7	1.2	1or2	15or20
2.0	1.5	1or2	15

4.  Application Range

·Waterproofing and damp proofing for underground constructions

·Waterproofing for municipal engineering such as subway, tunnel etc.

4.  PHysical properties

Tests		Index
Tensile Strength	Tension(N/50mm)≥	500
	Elongation at fracture point, %≥	400
IMpact resistances		(DIameter10±0.1)mm,No leakage
Heat resistance		70℃,2h No shift,Flow and dripping
Low temperature flexibility		(-25℃,No)
Water Tightness		0.6PMa,No water
PeelStrength /N/mm≥	Normal	2
	Cement powder pollution	1.5
	Sand pollution	1.5
	ULtravioletAgeing	1.5
	HEat ageing	1.5
Heat ageing performance (70℃,168h)	COnservation rate of tension,%	90
	COnservation rate of length,%	80
	Low temperature flexibility	(-23℃,No fracture)
Heat stability	Appearance	No bulge, flow and dripping
	Scale change,%	2

6.  Construction Method

·Clean and moisten the base:

Plaster waterproof coating or cement;

WHen using waterproof coating, keep the thickness between 2mm-3mm,

WHen usingCement, keep the thickness between 10mm-20mm.

·Pave membrane sheets:Peel theunder Surface isolation materials, pavethe membrane sheets upon coating material orCement.REserve an overlapping area between two sheets, keep thewidth of lap joint more than 60mm.

·Squeeze the air: use a rubber tile patting the membrane in order to squeeze the inside air.MAke the membrane sheet sticking on base tightly.

·Maintenance: peel the upperSurface isolation materials, use sealing materials to seal the lap joint 48 hours after paving,