合兴钢结构浅谈几种不同钢结构的防火保护措施发布时间：2015-9-14 9:45:52 浏览次数:542
1, shielding. Steel structure is set within the refractory material of the wall or ceiling, or component parcel in the space between the two pieces of wall, as long as can increase a few refractory or not achieve the purpose of fire prevention. This is one of the most economic way to fire. Fourth, expand material. Steel structure fire-retardant coating protection component, this method has good fireproof and heat insulation performance, construction steel structure geometry form without limit etc, and generally do not need to add auxiliary facilities, and the coating quality is light, there are some beautiful adornment effect, belongs to the modern advanced fire prevention technology measures.
2, outsourcing layer. Layer is added in the steel structure appearance outsourcing, can cast-in-situ molding, spraying method can also be adopted. Cast-in-situ molding outsourcing entities concrete layer usually use steel wire or steel to strengthen, to limit the shrinkage crack, and ensure the strength of the shell. Spraying method in the construction site daub sand pump to form a protective layer on the surface of a steel structure, sand pump can be cement or lime plaster mortar, can be mixed with perlite or asbestos. While outsourcing layer can also use pearlite, asbestos cement, gypsum, or asbestos, light concrete precast slab, using adhesives, nail, bolt is fixed on the steel structure.
3, water filling (jacket). Filling water in the hollow steel structure is the most effective protective measures against fire. This method can keep the steel structure in the fire at a low temperature, water circulate in the steel structure, the quantity of heat of heat absorption material itself. The heated water can be recycled after cooling, or introduced by the pipe cold water to replace the heated water.