What is the flame retardant material waterstop
The flame retardant material waterstop is a specially processed rubber waterstop. The difference between the flame retardant material waterstop and ordinary products is that it has flame retardant effect. The general rubber waterstop has no such effect. Yes, so it is wise to choose flame-retardant material waterstops in high-temperature and flammable areas. But in the process of use, it is easy to have a situation that the product will break, what is going on?
1. The influence of environmental temperature difference is easy to cause the concrete of the flame retardant waterstop to shrink freely and the concrete will deform. Whether some constraints play a role, such as: the role of piles in the basement, the friction between the piles and the inverted tension beams of the platform and the bottom plate and the soil, the thickness of the bottom plate of the high-rise tower and underground garage is more than 2 times, and the large direct Restriction of piles, reinforced concrete walls in basements and towers. Due to the overall expansion and contraction and the existence of various constraints, theoretically there will be more surface cracks, but the actual observations are not many, and the spacing between the attached walls at both ends of the expansion joint does not change much. In fact, the bottom plate, outer wall and top plate of the basement are not their own free bodies. If the calculation cannot give a clear result, the analysis determines that the influence of the environmental temperature difference is the main reason.
2. The shrinkage of concrete is likely to cause the breakage of the flame retardant material waterstop. Because the rubber waterstop is an ultra-long structure, two schemes for Post-construction pouring are proposed during the design. Set one meter, the other is the "Technical Specifications for the Application of Concrete Admixtures" requires a set of about 60 meters, the latter will be used during construction. It has been nearly 3 to 4 months since the construction of the basement has been completed, and the post-casting zone will be closed for more than 2 months. Observe the external walls, the bottom surface and the top surface of the surface. engineering.
3. Other factors cause the flame retardant material waterstop to break. Due to the original national standard map, the shaped products using rubber waterstops cannot adapt to such a large amount of deformation and cause stress concentration, which causes weak areas in the rubber waterstop. Break.
The installation of the flame retardant material waterstop is the same as that of the rubber support, and a certain specification is required, otherwise the flame retardant material waterstop will not achieve the purpose of waterstop and waterproof.
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