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Dayu GroupDayu Group was founded in 1998. It is a large-scale modern comprehensive enterprise integrating R & D, production, sales, construction and technical services. It is one of the leading enterprises in China's waterproof industry. Waterproof industry's top ten most influential brands, China's top 500 building materials enterprises, China's top 500 real estate enterprises preferred material suppliers.
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ProductsDayu Group has advanced production equipment and R & D resources, domestic and foreign joint R & D center and production base. With exquisite technology to achieve continuous upgrading and innovation of products, a number of products have been included in the national construction industry waterproof special scientific and technological achievements promotion project, obtained the first-class construction qualification of waterproof, thermal insulation and anti-corrosion integration, and provided high quality waterproof series products and construction services for many national major projects.
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ApplicationDayu Group and China Academy of Building Research have jointly established Dayu Technology Research and Development Center (provincial level) and Engineering Research and Development Center. Waterproof materials can be widely used in underground, roof, tunnel, high-speed rail, subway, bridge, municipal, environmental protection and other fields. In order to solve the problem of building waterproof leakage to provide a comprehensive and efficient solution, to achieve the same life of waterproof materials and buildings.
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CaseDayu Group has provided high quality waterproof products and construction services for major national projects such as the Olympic Village of the Beijing Olympic Games, Wukesong Gymnasium, Beijing Morgan Center, Shenyang Metro, Qingdao Metro and so on. at the same time, it has also reached strategic cooperation with many well-known real estate enterprises such as Longhu Real Estate, China Merchants Group and Greenland Group.
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Contact UsNational unified hotline: 400-990-6678
Email: lndy@lndy.top
Join us: +86-427-5918022
Started in 1998, the world's leading integrated provider of waterproof services
Since 1998，Leading Integrated Waterproof Provider In The World！
Product overview
Dayu®Self-adhesive polymer modified asphalt waterproofing membrane (no tire) is a self-adhesive waterproofing membrane composed of self-adhesive modified asphalt gum and surface material.
l GlialSBS modifier is used to modify petroleum asphalt to improve its high and low temperature resistance, fatigue resistance and bonding performance, and to improve the self-adhesive performance of modified asphalt by adding tackifying resin and other additives.
l Upper surface materialPolyethylene film (PE), polyester film (PET), silicon-coated isolation film.
l Lower surface material: Silicone-coated isolation film.
Product Features
l High extension, excellent shear stress, adapt to the base stress deformation, difficult to be torn.
l Strong glue bonding ability, long-term viscoelastic state, strong self-healing function, nail rod water tightness is excellent.
l Low temperature flexibility, long durability, long waterproof ability.
l Soft texture, in the shape of the parts can also be good, good sealing performance.
l Cold construction (no fire), self-paste, construction efficient, safe and environmentally friendly.
l It can form a composite waterproof layer with other compatible coatings or coils to meet higher grade waterproof requirements.
Specification classification
|
Bonding surface |
Single-sided Bonding (S)/Double-sided Bonding (D) |
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Thickness |
1.5 mm / 2.0 mm |
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Width |
1000 mm |
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Length |
15 m |
Scope of application
l Applicable to all kinds of industrial and civil buildings underground, roofing and other non-exposed parts of the waterproof project.
l It is especially suitable for waterproofing works of non-fire operation projects.
Construction process
l Basic requirements: solid, dry, no sediment, laitance, no empty drum, loose, sand and other phenomena.
l Interface treatment: uniform spray (roll) coating matching base treatment agent, improve the coil and the adhesion of the base.
l Trial laying of coiled material: lay the coiled material flat on the base surface, align the elastic line or the overlapping edge of adjacent coiled material, adjust the overlapping width, and rewind after standing for a period of time to release the stress.
l Cold adhesive paving: push forward to roll the paving coil, tear off the isolation bottom film, compact and exhaust to make the coil and the base closely bond.
l Body lapping: tear off the independent lapping film and roll the lapping edge to make the asphalt adhesive layer body bond tightly.
performance index
Products in accordance with the national standard "self-adhesive polymer modified asphalt waterproofing membrane" GB23441-2009 manufacturing.
The performance index meets the requirements of class N coil in the standard.
PE film class
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Project |
Indicator (Type I) |
Indicator (Type II) |
|
Pull force |
≥ 150N/50mm |
≥ 200N/50mm |
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Elongation at maximum tension |
≥ 200% |
≥ 200% |
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Fracture elongation of asphalt |
≥ 250% |
≥ 250% |
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nail bar tear strength |
≥ 60N |
≥ 110N |
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Heat resistance |
No sliding at 70 ℃, no more than 2mm |
No sliding at 70 ℃, no more than 2mm |
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Low temperature flexibility |
No crack at -20 ℃ |
No crack at -30 ℃ |
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impervious to water |
0.2MPa, impervious to water for 120min |
0.2MPa, impervious to water for 120min |
PET filmClass
|
Project |
Indicator (Type I) |
Indicator (Type II) |
|
Pull force |
≥ 150N/50mm |
≥ 200N/50mm |
|
Elongation at maximum tension |
≥30% |
≥30% |
|
Fracture elongation of asphalt |
≥ 150% |
≥ 150% |
|
nail bar tear strength |
≥ 30N |
≥ 40N |
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Heat resistance |
No sliding at 70 ℃, no more than 2mm |
No sliding at 70 ℃, no more than 2mm |
|
Low temperature flexibility |
No crack at -20 ℃ |
No crack at -30 ℃ |
|
impervious to water |
0.2MPa, impervious to water for 120min |
0.2MPa, impervious to water for 120min |