Code for Acceptance of Coating Quality of Steel Structure Fireproof Coatings.
Main control project
1. The application of fire-resistant coatings and rust prevention primer on steel surfaces should comply with the design requirements and relevant national standards.
2. The bonding strength and compressive strength of steel structure fireproof coatings should comply with the current national standard "Technical Specification for Application of Steel Structure Fireproof Coatings" CECS24:90. The inspection of anti-corrosion should comply with the provisions of the current national standard GB9978 "Performance Test Methods for Fireproof Spraying Materials of Building Components".
3. The layer thickness of thin coated fireproof coatings should meet the design requirements related to fire resistance limit. The thickness of thick coated fireproof coating Tucheng should meet the design requirements for fire resistance limit for 80% or more of the area, and the thinnest part should not be lower than 85% of the design requirements
4. The surface crack width of the thin coated fireproof coating layer should not exceed 0.5mm; The surface crack width of the thick coated fireproof coating layer should not exceed 1mm.
General projects
5. The foundation of fireproof coating should not have dirt such as oil, dust, and mud.
6. Fireproof coatings should not be mistakenly applied or missed, and the layer should be closed without any appearance defects such as delamination, hollowing, obvious depression, loose powdering, and floating slurry.