SBS Modified Asphalt Waterproof Membrane (JC/T974)

Brief Introduction:
1. "Yuhong" SBS Modified Asphalt Waterproof Membrane, a kind of windable sheet waterproof material
2. Dipping and covering material: styrene-butadiene-styrene (SBS) modified asphalt
3. Upper surface coating: PE film, fine sand, mineral granules or aluminum foils, copper foils or other isolating materials

Applications of SBS Modified Asphalt Waterproof Membrane:
1. For waterproofing all kinds of industrial and civil building roof engineering projects
2. Waterproof and damp proof purpose for all kinds of underground engineering projects
3. For waterproofing bridge surfaces of subways, tunnels and concrete roads, sewage treatment and garbage burying projects
4. For waterproofing such hydraulic projects as penstocks, swimming pools, water pools

Specifications of SBS Modified Asphalt Waterproof Membrane:
1. Breadth: 1000mm
2. Thickness:
   PY fiber membrane : 3mm and 4mm
   G fiber membrane : 2mm, 3mm and 4mm
3. Area per roll: 15m²(2mm), 10m²(3mm) and 7.5m²(4mm)

No.	Substrates			PY		G
	Types			Ⅰ	Ⅱ	Ⅰ	Ⅱ
1	Content of soluble substances g/㎡ ≥	2mm		—		1300
		3mm		2100
		4mm		2900
2	Water impermeability	pressure, MPa≥		0.3		0.2	0.3
		retention time, min≥		30
3	Heat resistance degree, ℃			90	105	90	105
				No slipping, flowing or dropping
4	Tensile strength, N/50mm   ≥	Longitudinal		450	800	350	500
		Transverse				250	300
5	Elongation at break %   ≥	Longitudinal		30	40	—
		Transverse
6	Flexibility at low temperatures, ℃			-18	-25	-18	-25
				No cracks
7	Tearing strength, N≥	Longitudinal		250	350	250	350
		Transverse				170	200
8	Accelerated weather test	Appearance		Grade 1
				No slipping, flowing or dropping
		Strength retention % ≥	Longitudinal	80
		Flexibility at low temperatures, ℃		-10	-20	-10	-20
				No cracks