Tunnel fire-resistant coating
Tunnel Fire Retardant Coating Product Introduction
For the surface of concrete structures in highway and railway tunnels.
Tunnel Fire Retardant Coating Performance Specifications
Serial Number | Inspection Items | Technical Specifications | Defect Classification |
1 | Condition in the container | After stirring, it forms a uniform and thick liquid without lumps. | C |
2 | Drying Time (Surface Dry) | ≤24 | C |
3 | Bond Strength | ≥0.1 | A |
4 | Dry Density | ≤800 | C |
5 | Water resistance | After 720H testing, the layers do not crack or delaminate in seven layers, allowing slight expansion and discoloration. | A |
6 | Acid resistance | After 360H testing, the layers do not crack or peel off in seven layers, allowing slight expansion and discoloration. | B |
7 | Alkali resistance | After 360H testing, the layers do not crack or delaminate after seven layers, allowing slight expansion and discoloration. | B |
8 | Frost-thaw cycle test | After 15 trials, the coating does not crack and peel off after seven layers. | B |
9 | Moisture and heat resistance | After passing the 720H test, the layers do not crack and peel off in seven layers, nor do they change color. | B |
10 | Fire resistance | Layer thickness | 20±2 | A |
