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1. Material properties and features Building waterproof material can be divided into two major categories of flexibility and rigidity.
The flexible waterproof material has high tensile strength, large elongation, small quality, and convenient construction, but the operating technique is strict, and the puncture resistance and aging resistance are not as good as rigid materials. The same is a flexible material, coil for the factory production. The thickness is uniform, the quality is relatively stable, the construction process is simple, and the work efficiency is high. However, there are many laps of the equipment, and the joints are easily separated. It is difficult to construct the complex table and the uneven ground.
The performance and characteristics of the waterproof coating are contrary to the secretion. In the same way, coils, synthetic polymer coils, polymer modified bituminous coils, and bituminous coffins also have different advantages and disadvantages.
It can be seen that when selecting waterproof materials, their performance and characteristics must be ironed out.
2. After understanding the performance and characteristics of various types of waterproof materials, the functions of the building and the external environment shall also be based on the type of building structure, the type of waterproof structure, and the external climate conditions (including temperature, humidity, acid rain, ultraviolet rays, etc.) and construction of the joints. The structural form of the object (whole cast or prefabricated) and the material used to determine the span, roof slope, degree of foundation deformation, and exposure of the waterproof layer.
3. Construction conditions and market prices When choosing waterproof materials, construction conditions and market price factors should also be taken into account.
For example, synthetic polymer waterproofing membranes can be divided into three major categories: elastomers, plastomers, and reinforced synthetic fibers. Not only do they have different materials, but they also have great differences in performance; at the same time, they must consider the actual choice of materials in the local area. How to use the effect; should also consider the synthetic material of the polymer waterproofing membrane cohesive binding agent, construction process and other construction conditions. The requirements for material selection have been put forward by taking the waterproofing membrane as an example. There are also many varieties of waterproof coatings and sealing materials, and there are various technical indicators. However, the requirements for material selection are basically the same as those mentioned above.
In addition to the above mentioned points, the choice of materials should further consider whether the waterproof layer can adapt to the deformation of the base layer.
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