Standard test design quality of elastomer modified bitumen waterproofing membrane. Chinese enterprises. People lack the expertise in waterproof technology, and the waterproof design is often not in place, and even mistakes occur from time to time. The design unit does not have a quality responsibility assessment system for waterproof design. Government regulations: For materials used in waterproofing projects, design documents must not be produced by manufacturers, and due to lack of experience in design and selection of materials, or restricted by the construction unit, they are allowed to choose products. Human factors may cause hidden leakage or quality accidents in waterproofing projects.
Jointly organized by Suzhou Waterproof Research Institute of China Building Materials Research Institute and Qingdao University of Science and Technology. At the seminar, China Railway Research Institute, China Academy of Construction Sciences, Beijing Urban Construction Design and Development Group Co., Ltd., Qingdao Municipal Design Institute, Qingdao University of Science and Technology, Qingdao Metro Group, Soprema, Sika Senai, Xinda Luxin, etc. Experts, scholars and related technicians from scientific research institutions, universities, construction units, design units, and material production units conducted in-depth discussions on the key factors affecting the quality of polymer waterproofing membrane products and projects. Chao Chao, director of the Suzhou Waterproof Research Institute of China National Building Material Research Institute, said at the recent 3rd Polymer Waterproof Coil Industry Development Seminar. The 3rd Polymer Waterproof Coiled Material Industry Development Seminar was organized by the "China Building Waterproofing" agency.
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The performance of elastomer modified bitumen waterproofing membrane standard test materials should be fully utilized. Different waterproofing membranes have their own strengths and shortcomings. Use their strengths while avoiding their shortcomings. For example, high-density polyethylene geomembrane has poor flexibility and is difficult to use in roof waterproofing. But it has high strength and strong root puncture resistance. It has a width of up to 7m and can be welded and seamed. These advantages are just for the waterproofing of large garbage landfills and rivers and lakes. Other materials cannot be replaced. The performance of cement-based propionic acid waterproof coatings is not as good as polyurethane coatings, but acrylic coatings can be applied on wet bases, while polyurethane coatings cannot.
So you can add our contact information, we provide you with real-time price information, so that you can find the right time for you to buy according to your own situation. SBS is a high polymer with good effect on asphalt modification. It is a kind of thermoplastic elastomer, which is a toughening of brittle materials such as plastics and asphalt. SBS added to asphalt (the addition amount is generally 10%~15% of asphalt). ) It interacts with asphalt to absorb and swell the asphalt to form an asphalt mixture with strong molecular bonds, thereby significantly improving the elasticity, elongation, high temperature stability, low temperature flexibility, fatigue resistance and aging resistance of the asphalt. .
Lay layer by layer from the cornice to the ridge. All kinds of coiled materials should be overlapped up and down, and the overlapping positions of multi-layer coiled materials should be staggered. The upper and lower coiled materials should not be laid vertically. The order of applying coiled materials: When the waterproof layer is constructed, the joints should be made first, and the additional layer and the roof drainage are more concentrated (such as the connection between the roof and the water drop, the cornice, the gutter, the eaves, the corner of the roof, the end seam of the board, etc. ), and then construct upward from the lower elevation of the roof. When laying gutter and gutter roll materials, follow the direction of gutter and cornice to reduce overlap. The thickness of the deformation joint and the concrete structure shall not be less than 300mm. The width of the settlement joint should be 20-30mm, and the width of the deformation joint suitable for expansion and contraction should be less than this value in order to better explain the function of the steel waterstop. The waterproof function of steel waterstop is one of the basic functions required by construction engineering quality, so steel waterstop manufacturers should pay more attention to details when designing. It is to use the high elasticity of rubber to produce elastic deformation under various pressure loads, thus acting as a strong seal, which can effectively prevent water leakage and water seepage of the building structure and play a shock absorption and buffer effect.
The base layer is not dry, the surface is not cleaned, water vapor penetrates into the bottom of the waterproof layer, the base layer is not coated with the base treatment agent, the adhesive does not match the properties of the coil, the coating is uneven, and the bottom surface is not applied when laying the coil. The air is removed, and some exhaust grooves are blocked. Prevention. The base layer must be dry, and only after passing the test with a simple inspection method, can it be laid. The base layer must be cleaned, the base treatment agent selected, and the adhesive must match the material properties of the coil, and it can be used after passing the test.
Excellent extensibility and tensile properties, adapt to the deformation of the base layer of the structure. ●The excellent self-healing performance and local self-locking water performance of the high-quality pressure-sensitive self-adhesive layer greatly reduce the chance of leakage. ●It has unique puncture resistance, self-healing and continuous tear resistance, and the nail shaft has excellent water tightness. ●Innovative construction method selection, dry paving, wet paving, empty paving and pre-laying anti-adhesive construction can be adopted, which reduces labor intensity and is more suitable for the requirements of the grassroots. ●The width is 1m-2m to choose from, which reduces the overlap and makes the construction faster. It is especially suitable for large-area construction. Quality requirements for waterproof materials. The waterproof material used in the roofing project should have material quality certification documents and be certified by the quality inspection department to ensure that its quality meets the requirements of the "Technical Specification for Roofing Engineering" (GB502079 or related standards. The waterproof material should be accompanied by a factory inspection after entering the construction site. The report form and the factory certificate, and indicate the date of production, batch number, specifications, and name. The construction unit shall take samples for re-inspection according to regulations, and the sampling re-inspection shall strictly follow the witness sampling and sample delivery system. Under the witness of the construction unit representative or the supervision unit personnel, The construction personnel will take samples on site and send them to the laboratory for testing.
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