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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®Non-curing rubber asphalt waterproof coating is a new type of hot melt asphalt waterproof coating with environmental protection and long-term creep.
Its cohesion is very low, the film shape is not fixed, and it always maintains the characteristics of viscous glue, so it has a strong self-healing ability and adaptability to deformation.
Product Features
l Keep the creep state for a long time, and the damage can be self-healing and reclosed.
L low cohesion, can release and dissipate the stress transmitted to the coating, the coating is not cracked, not affected by zero extension side effects, no fatigue damage.
l Strong bonding ability, can be well bonded with the base and a variety of coiled materials, and form a composite waterproof layer with strong waterproof ability.
l Good sealing, solve the problem of water channeling.
L high solid content, no solvent, can be a thick coating to more than 2mm.
l Construction environment adaptability, hot melt construction is not limited by temperature.
L anti-loss, corrosion resistance, good durability.
Scope of application
l It is suitable for industrial, civil, municipal and other construction projects, including administrative, residential, commercial, scientific research, medical, school, grain depot, pipe gallery and other buildings.
l Suitable for building basement, roof and other waterproof parts.
L suitable for gap grouting plugging maintenance engineering.
Construction process
L non curing rubber asphalt waterproof coating can not exist alone, and need to be combined with waterproof coiled material, sheet or geotextile cloth and other cladding materials.
L grass-roots requirements: solid, dry, clean, free of sediment, laitance, no empty drum, loose, sand and other phenomena, yin and yang angle should be rammed arc angle.
l Interface treatment: uniform spray (roll) coating matching base treatment agent, improve the coating 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 *, let stand for a period of time to release the stress and then roll back.
Lap width: determine the lap width according to the selected waterproofing membrane.
L hot melt coating: place the coating barrel in the debarrel and heat it, so that the outer wall of the block coating melts and does not stick to the barrel wall; Pour the block in the barrel into the melt glue machine and fully heat it to a molten state.
l Scraping or spraying the molten coating to the base surface shall reach the design thickness once and shall not pollute the lap edge of the coil.
l Simultaneously pave the surface coil, properly compacted to make the coil and the coating closely combined.
L coil overlap: the coil should be overlapped in body, and non-curing paint should not be used for bonding.
performance index
Products in accordance with the building materials standard "non-curing rubber asphalt waterproof coating" JC/T2428-2017 manufacturing.
Performance indicators meet standard requirements
Part of the physical performance indicators at a glance:
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Project |
Indicators |
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Flash Point |
≥ 180 ℃ |
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Solid content |
≥98% |
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Bonding performance |
100% cohesive failure |
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Extensibility |
≥ 15mm |
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Low temperature flexibility |
-20 ℃, no crack |
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Heat resistance |
65 ℃, no sliding, flowing and dripping |
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self-healing |
No water seepage |
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stress relaxation |
≤ 35% |
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Anti-channeling water |
0.6MPa, no water channeling |
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