HDPE pre-laid waterproof membrane with sand

Category: Polymer waterproofing membrane system

key word: Polymer waterproofing membrane system

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HDPE pre-laid waterproof membrane with sand

★ Product Introduction

HDPE pre-paved waterproof coiled material with sand is also called high density polyethylene self-adhesive film) waterproof coiled material. It is an environment-friendly self-adhesive waterproof coiled material formed by high density polyethylene film as the main material, coated with a layer of modified pressure sensitive adhesive and anti-adhesive layer sand layer. It is a waterproof material specially developed for waterproof pre-paved parts of buildings and is widely used in tunnels, basement floors, vertical walls, garages and underground projects.

★Product Specifications

Width: 2.0mThickness: 0.5-2.0mmLength: ≥20m

Width:2.0m Thickness:0.5-2.0mm Length: 20m or more than 20m

★Technical standard for polymer self-adhesive waterproofing membrane

"Pre-shop/Wet-laid Waterproofing Membrane GB/T 23457-2009

Table 1-1 Physical Property Index of Pre-paved Waterproofing Membrane

Serial Number	Project		Indicators
			P	PY
1	Soluble content/(g/m²) ≥		—	2 900
2	Tensile properties	Tensile force/(N/50mm) ≥	500	800
		Elongation at break of film,% ≥	400	—
		Elongation at maximum tension/% ≥	—	40
3	Tear strength of nail shank/N≥		400	200
4	Impact performance		Diameter (10±0.1)mm, no leakage
5	static load		20kg, no leakage
6	Heat resistance		No displacement, flowing and dripping at 70 ℃ for 2h
7	Low temperature bending		-25 ℃, no crack	—
8	Low temperature flexibility		—	-25 ℃, no crack

Table 1-2 Physical Property Index of Wet-laid Waterproofing Membrane

Serial Number	Project			Indicators
				P		PY
				Ⅰ	Ⅱ	Ⅰ	Ⅱ
1	Soluble content/(g/m²) ≥		3.0 mm	—		2 100
			4.0 mm			2 900
2	Tensile properties	Tensile force/(N/50mm) ≥		150	200	400	600
		Elongation at maximum tension/% ≥		30	150	30	40
3	Tear strength/N≥			12	25	180	300
4	Heat resistance			No displacement, flowing and dripping at 70 ℃ for 2h
5	Low temperature flexibility/℃			-15	-25	-15	-25
				No crack
6	impervious to water			0.3 MPa, no water penetration for 120 min
7	Peel strength between coil and coil/(N/mm) ≥		No treatment	1.0
			Heat treatment	1.0

Note:Products are divided into pre-paving according to the construction method (Y）Wet laying (W)

Products according to the main material is divided into polymer waterproofing membrane (P class), asphalt-based polyester tire waterproofing membrane (PY class)

Thickness of pre-laid waterproofing membrane ：

Class P: pre-paved waterproof coiled material thickness: 0.7mm, 1.2mm, 1.5mm, the corresponding full thickness of the coiled material: 1.2mm, 1.7mm, 2.0mm

PY: 4.0mm

Thickness of wet-laid waterproofing membrane ：

Class P (full thickness of coil): 1.2mm, 1.5mm, 2.0mm

PY: 3.0mm, 4.0mm

Table2 "Waterproof Coil with Self-adhesive Layer" Coil Self-adhesive Layer Physical Property Index GB/T 23260-2009

Serial Number	Project		Indicators
1	Peel strength/(N/mm)	Coil and coil	≥ 1.0
		Coil and aluminum plate	≥ 1.5
2	Peel strength after immersion/(N/mm)		≥ 1.5
3	Peel strength after thermal aging/(N/mm)		≥ 1.5
4	Heat resistance of self-adhesive surface		70 ℃, no flow for 2h
5	Holding Tack/min		≥ 15

Note: The waterproofing membrane with self-adhesive layer shall meet the requirements of the current product standards related to the main material, and the supplementary description of the performance affected by the self-adhesive layer is shown in the table.2

★ Product application range

Polymer self-adhesive waterproofing membrane can be applied to all kinds of concrete roof waterproofing in industry and construction industry, basement, subway tunnel, air raid shelter, grain depot, garbage disposal and other waterproof projects.

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