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Principle 1: Waterproof design should be based on the geographical environment, design and construction environment to match the materials and programs.: SBS waterproof coils or oily coatings are used in wet underground chamber construction.Analysis: the northern climate is relatively dry, the south is more humid, the SBS waterproof coil for dry environment construction for wet basement construction, so that SBS waterproof coils difficult to bond to the foundation through hot melt construction, and finally due to the inevitable small damage caused by water rushing water failure
C.
. Solution to select waterproof materials that can be wet and firmly bonded to wet concrete.principle two: waterproof to just soft, waterproof layer to match the characteristics of the grass-roots changes, try to avoid rigid waterproof layer as a separate waterproof layer.: rigid waterproof material as a separate waterproof layer for a large span of waterproof grass, such as roofing, underground, room roof, side wall and so on.analysis: rigid waterproof as an independent waterproof layer is susceptible to rigid grass cracking and produces small cracks leading to leakage.principle three: flexible waterproof layer should be done on a solid waterproof basis, to avoid water layer under the waterproof layer.myth: the waterproof layer is made on top of the insulation layer.analysis: waterproof layer in the construction process inevitably appear small damage, water will leak through the damage to the insulation layer, resulting in a small leak in rainy days, after the day after the phenomenon of large leakage. Solution, waterproof in the south is heavier than insulation, waterproof layer directly on the waterproof base.four: the use of multi-layer composite waterproof, waterproof layer between the superimposed compatible.: compartment construction, such as the roof to do three layers of SBS waterproof coil waterproof layer, do a waterproof layer, batch of cement mortar layer; Do a polyurethane waterproof coating, and then do a self-adhesive coil.analysis: multi-layer waterproof coil in the middle of the cement mortar layer isolation, SBS waterproof coil and cement mortar layer interface is not compatible, encountered damage, layer-to-layer between the formation of a water layer, less than 1>1 effect, but more difficult than single-layer maintenance; Polyurethane waterproof coating and self-adhesive coil interface is not compatible, polyurethane waterproof coating in the drying process has solvent waved out, will destroy the structure of self-adhesive coil and polyurethane waterproof coating itself.principle five: design does not combine with the actual material selection, too much reliance on atlases and standards, construction does not pay attention to process coordination and detail management, contempt for late maintenance.analysis: waterproofing is a system engineering, engineering management and materials engineering closely cooperate with the project, ignoring any link will cause waterproof failure. Therefore, from the source of good technology, according to the basic principles of waterproofing to choose waterproof materials, choose professional waterproof construction units carefully managed construction.
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