Reasons for rupture of flexible waterproof casing

First, the installation is not installed in accordance with the provisions of the welding part is not close enough. Or a long time in a strong acid reduction environment, will produce cavities or small holes, resulting in uneven stress and damage to the waterproofing casing.
Second, flexible waterproof casing in the use of the waterproofing layer materials due to improper use of the waterproof layer was damaged. Waterproof layer selected materials do not meet the requirements, construction thickness is not enough, improper process, two or more waterproofing materials compound improper use of each other to affect the respective waterproofing effect.
Third, the weak link of the flexible waterproofing layer is cut under the action of groundwater, the formation of the overall flexible waterproofing layer of damage water penetration waterproofing layer. Basement floor each corner waterproofing layer is easy to be cut and cracked, basement floor usually has 1-2 channels along the perimeter of the corner line, the structure of the concrete are sharp corners, and is divided into two waterproof material construction, its corner line waterproofing ability is relatively poor, in the process of structural settlement, the part is easy to be cut and cracked. In addition, the basement floor flexible waterproofing layer are used outside the anti-paste method of construction, and the method of construction can not do waterproofing layer and structure layer bonding tight, in the bottom plate deformation is easy to make flexible waterproofing layer and the bottom plate off, off the structure of the waterproofing layer and easy in the role of groundwater drum break.
Fourth, flexible waterproof casing waterproofing layer according to the concrete defects and perforation damage. This is due to uneven sinking structure larger cracking drives the destruction of the flexible waterproofing layer; secondly, when the outer defense within the sticker method of construction of the bottom plate concrete has a large outer cavity, at this time people do not know and can not repair the concrete. Produce the loss of waterproofing layer back attached, under the action of water pressure, small local waterproofing layer is struck through.
Fifth, the façade outside the outside of the prevention method of flexible waterproofing casing waterproofing protection layer damage or deformation played a local damage to the waterproofing layer. Basement walls are usually flexible waterproofing layer is used after the formation of structural concrete for the construction of the external anti-paste method, which has the advantage of a flexible waterproofing layer can be better combined with structural concrete, but most of the current practice only outside the waterproofing layer to do brickwork protective layer, when the basement appears larger sinking or backfill construction, it is possible to make the waterproofing layer outside the brickwork protective layer deformation fracture or vibration and local damage The waterproofing layer.