Waterproof form and waterproof design
In any waterproof project, leakage depends on four factors: (1) waterproof layer with seam: the waterproof layer is not integral, there are water permeable gaps and micropores on the waterproof layer; (2) causing seepage Leaking water source: water permeable gap on the waterproof layer, water on the surface of the micropore; (3) action time of water: the longer the action time of water, the greater the water seepage; (4) the pressure of water: the pressure of water The larger the water, the greater the amount of water seepage.
Among the above four elements, the water source and the seamed waterproof layer are necessary conditions for leakage. Without any one condition, no leakage will occur; the size of the gap, the action time of water, and the pressure of water are determined by three factors. The amount of leakage is proportional to it.
1. The main project must be seamless and waterproof.
According to the necessary conditions for leakage, water-proof, non-drainable and water-repellent works, water is present on the surface of the waterproof layer. Therefore, it should be seamlessly waterproofed and adhered to the prevention to ensure the quality of the project.
There are several types of projects that must be used for seamless waterproofing: (1) Water storage projects: such projects include fire pools, swimming pools, baths, rain collecting pools, and water storage roofs. (2) Projects that cannot be drained: This type of project mainly refers to various types of underground waterproofing works. (3) Waterproof project of easy water accumulation: This type of project has a roof with a drainage slope of 2~5%; it is easy to form a stagnant water on the flexible waterproof layer, such as a roof with a rigid waterproof layer on the flexible waterproof layer. , the roof of the concrete paving heat insulation board, the roof of the upper man, the inverted roof, the planting roof, the toilet room, the external wall brick and the external wall project with the insulation layer.
3, the main line of the project can be used with seam waterproof and seamless waterproof
According to the necessary conditions for leakage, if the water on the surface of the waterproof layer can be quickly drained, even if the waterproof layer is available with seam waterproofing, it can be seamlessly waterproof.
The main types of such projects are: (1) In the roof of the drainage slope not less than 5%, the coil is directly exposed to use or the installation of overhead insulation panels. (2) Various types of slope roofing works. (3) Wall engineering, such as some buildings in Qingdao, also installed tile waterproofing on the wall of the daughter.
It is worth noting that when selecting seam waterproofing, it should be constructed in strict accordance with the principle of water splicing. The detailed joint parts should have special design and corresponding supporting materials.
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