How to solve the clogging problem of waterproof sleeves

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This post was last edited by yuchenchf on 2017-8-12 at 17:27. Due to long-term use, contaminants often accumulate in the waterproof sleeves, causing blockages. So how can such blockages be resolved? Below is a brief overview for everyone. A waterproof sleeve is also known as a wall-penetrating sleeve or wall-passing tube. Waterproof sleeves are generally used in structures where pipes pass through walls and are subject to vibration or require strict waterproofing. After the sleeve is manufactured, its outer surface is coated with a primer layer (the primer may consist of red lead or linseed oil). Waterproof sleeves are divided into rigid waterproof sleeves and flexible waterproof sleeves. The main difference between the two lies in their areas of use: flexible waterproof sleeves are primarily used in places with high requirements, such as civil defense walls and water tanks, while rigid waterproof sleeves are generally used in basements and other locations where pipes need to pass through. How to deal with clogs in waterproof sleeves: 1. After the flexible waterproof sleeves used for passing beams within cast-in-place floor slabs and columns have been installed in conjunction with the civil engineering work, before pouring the concrete, these sleeves should be filled tightly with soft materials such as newspapers or straw bags to prevent mortar from entering the sleeves and junction boxes and causing clogs. 2. To prevent outdoor groundwater or rainwater from entering the basement through waterproof sleeves, it ensures a favorable construction environment for subsequent installation. Therefore, in addition to sealing the waterproof sleeves at the exterior walls of the basement with flexible materials, when these sleeves are prefabricated, their ends should be sealed off by welding steel plates; they can then be opened once the pipes connected to the sleeves are installed. 3. When pipes pass through waterproof exterior walls, rigid waterproof sleeves should be embedded along with the structure. 4. At the points where pipes pass through walls, wall panels, or rooftops, holes should be pre-made in the structure; the sleeves for these pipes should be installed after the structural work is completed. The ends of these sleeves, which are placed in the holes made in the structure, must be sealed properly using tape or similar materials. 5. Above the civil air defense floor slabs, civil air defense walls, as well as in the pipes and pressure measurement tubes located in the civil air defense diffusion rooms, sealed sleeves should be embedded along with the structure.