Update:
Three common problems in the spraying of fireproof coatings for steel structures:
1. The spray coating is ...
1. The spray coating is too thin
The purpose of spraying fireproof coatings on steel structures is to increase the fire resistance limit of steel structures. The performance index of the fire resistance limit of steel structure is closely related to the spray thickness. For the same kind of fireproof coating, the thickness of spraying is different, and the fire resistance limit is also different. If the thickness of the fireproof coating of steel structure is not sprayed according to the design requirements, the fire resistance limit of steel will not be able to meet the fire protection requirements.
2. There are papillae on the sprayed surface
In order to ensure that the coating surface is even and flat, the spraying thickness must meet the requirements. However, some construction units ignore this requirement of the specification, and some emphasize that the steel pillars after spraying are decorated, and there are mastoids that are not afraid to wait. , This type of problem accounts for 10%. If there is a mastoid, after measuring the mastoid, the mastoid must be removed to ensure that the cylinder surface is even and flat before the inspection is required, otherwise it is unqualified.
3. The selection type is wrong
Different types of fireproof coatings have different thicknesses sprayed on steel structures, and their fire resistance limits are also different. Different types of fire-retardant coatings should be sprayed on different parts of the steel structure to ensure that the fire-resistance limit of the steel structure meets the fire-proof requirements. If the wrong type is selected, even if the sprayed layer reaches the thickness, it will not meet the fire protection requirements.
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