The product type water swelling waterstop is mainly red in color, with high expansion rate, good elasticity and strong hardness. It is mainly used for caulking, sealing and waterproofing of shield and pipe gallery. A large number of split bolts are used in various underground construction projects, water conservancy projects, tunnel projects, municipal water supply and drainage projects, reservoirs, swimming pools, and buildings. All kinds of through wall pipes and water supply and drainage pipes are easy to form tiny gaps when the concrete is solidified and hardened, which also forms a leakage channel. At present, they are used in construction, The method of welding the 2mm thick annular waterstop ring in the middle of the steel plate can extend the seepage line to increase the impermeability, but leakage often occurs. Generally, there is no waterproof measure for the upper and lower floors of the building, so there is water on the upper floor and water dripping on the lower floor.
BW is equipped with grouting pipe expansion waterstop. According to the water stop principle of the expansion waterstop, the grouting pipe type waterstop solves the problem of grouting remedy. Our factory has developed grouting pipe type waterstop which is superior to other waterstops in performance, convenient installation, and better water stop effect. In particular, the remedial measure of arranging the preparatory grouting pipe, in case of leakage in the gap, it is not necessary to drill holes on the surface of the structure to plug the leakage. The grouting pipe of the waterstop can be used to directly inject the grouting fluid to quickly and conveniently plug the leakage. If water expansion rubber strip is used, it can be expanded when water seeps into one end
Water swelling rubber is an excellent waterproof material. With the support and recommendation of the majority of designers and constructors, this material has been widely used in various types of reinforced concrete self waterproof structures of underground works for many years. Its excellent elasticity, extensibility and expansion water stop have won a nationwide reputation. Its superior water resistance, chemical resistance, durability and weather resistance have been widely used in underground shopping malls Underground garage, underground water diversion project, open caisson, flood prevention wall and other projects. BW slow expansion mesh waterstop (PN putty type) is a layer of steel wire mesh or nylon mesh added on the basis of bw waterstop, which enhances the tensile property of waterstop and keeps the expansion rate unchanged.
The product type water swelling waterstop can be used for the construction of joints with fast water sealing speed. When encountering water, it will produce at least 2-5 times of expansion deformation, fill all irregular surfaces, cavities and gaps of glumes, and generate huge contact pressure to completely prevent leakage.
The self-adhesive waterstop has good air tightness, good bonding strength, and strong self-adhesive and deformability. It can be directly bonded with the newly poured concrete without adhesive under certain conditions. It overcomes the problem of circular pouring leakage caused by the poor bonding between the waterstop material and the concrete in the past, and has good water resistance, acid alkali resistance, and aging resistance, It can be widely used in water conservancy and hydropower projects and various industrial and civil construction projects
The composite geomembrane is composed of geomembrane and geotextile, of which the geomembrane plays the role of anti-seepage, and the geotextile plays the role of protecting the anti-seepage geomembrane from the rupture and tear damage of building structures and materials, improving the mechanical properties of the composite geomembrane, and achieving the reinforcement and repair functions of anti-skid, infiltration, filtration, etc. When composite geomembrane impervious materials are used for anti-seepage and water-saving reinforcement and repair of the channel, the total cost of the project should be high according to the scale of the channel project.
The geological conditions, groundwater level and other parameters in the low and engineering areas shall be reasonably selected to meet the relevant technical index requirements of national standards. According to the reasonable calculation of irrigation area and channel permeability coefficient in the irrigation area, after determining the channel flow capacity, flow section and other parameters, 0.3mm thick high-density polyethylene composite geomembrane (high-density polyethylene membrane) was finally selected as the anti-seepage material of the channel. In order to improve the comprehensive anti-seepage and reinforcement performance of the channel, cast-in-place concrete is used for lining and reinforcement of the overflow section. The thickness of the reinforced concrete lining of the general soil section is 10cm for the slope and 8cm for the bottom plate, and 12cm for the slope and 10cm for the bottom plate in special parts.
After the excavation of the embankment and the bottom of the canal, the sharp wastes such as grass roots, tree roots, rubbles, stones, and concrete particles shall be carefully removed, and the impermeable layer of the geomembrane shall not be damaged. After the wastes are removed, they shall be tamped and treated until the canal soil is pressed. The composite geomembrane can be laid only after the actual coefficient meets the relevant standards or design requirements and is accepted by the site supervision engineer. In the process of laying, welding and sewing, it is strictly prohibited to carry out composite geomembrane in rainy days. At the same time, during the welding process, ensure that the substrate surface * * * has a drying property, the moisture content should be controlled within 15%, and the membrane surface should be wiped clean with dry gauze before welding. During the whole construction process, it is not allowed to bring kindling into the construction site, and it is not allowed to wear spiked shoes, high-heeled shoes and hard soled shoes directly on the composite geomembrane; Construction vehicles, construction machinery and other equipment are not allowed to roll the geotextile and its protective layer. The welding operator shall observe the welding quality of the geotextile at any time, and reasonably adjust the welding temperature and walking speed in full consideration of the weather, temperature, humidity and other conditions in the construction area. As the laying, welding and sewing of composite geomembrane are concealed works, self inspection must be carried out during the construction process and then reported to the supervising engineer for on-site acceptance. The next process can be started only after the quality is qualified
