1. Expansive material
The steel structure fireproof coating is used to protect the components. This method has the advantages of good fireproof and heat insulation performance, and the construction is not limited by the geometric shape of the steel structure. Belongs to modern advanced fire prevention technical measures.
2. Outer cladding
It is to add an outer cladding on the surface of the steel structure, which can be cast-in-place or sprayed. The solid concrete outer cladding of steel structure fire-proof cast-in-place is usually reinforced with steel wire mesh or steel bars to limit shrinkage cracks and ensure the strength of the shell. Spraying method can apply sand pump to the surface of the steel structure at the construction site to form a protective layer. The sand pump can be lime cement or gypsum mortar, or it can be mixed with perlite or asbestos. At the same time, the outer cladding can also be made of perlite, asbestos, gypsum or asbestos cement, and light concrete to make prefabricated panels, which are fixed on the steel structure with adhesives, nails, and bolts.
3. Shield
The steel structure is set in the wall or ceiling composed of refractory materials, or the components are enclosed in the gap between two walls, and the purpose of fire prevention can be achieved only by adding a little or no refractory materials. This is one of the most economical fire prevention methods.
4. Fill with water
Filling the hollow steel structure with water is the most effective protection measure for steel structure fire prevention. This method keeps the steel structure cool during a fire, and water circulates within the steel structure, absorbing heat from the material itself being heated. The heated water can be recirculated after being cooled, or cool water can be piped in to replace the heated water.
