Tunnel Fire retardant coating Asbestos free manufacturer pin
Tunnel fire prevention for this production coating It is a non asbestos product. Its main component is inorganic thermal insulation material, which does not expand in case of fire and has good thermal insulation. Because of its small coating density and low thermal conductivity, it effectively raises the fire resistance limit of concrete structures. It provides reliable fire protection for the tunnel. At the same time, the coating density is small and porous, and the construction in the steep road has obvious sound absorption effect.
Base course construction:
(1) Batching: mix the paint and water at a ratio of about 0.7. Add a small amount of water while mixing and add paint, and add water in an appropriate amount. Generally, mix for 20min to form a thick slurry (ensure the mixing time)
(2) For construction, the spraying machine is used to spray from the waist of the tunnel from bottom to top. The thickness of each spraying is 3-7mm. The standard is that the coating is basically dry at the interval of construction time until the design thickness is reached. After the next spraying, if it is necessary to trowel, the troweling method is used to trowel it.
4. Surface construction:
(As the case may be) The surface construction can be carried out about three days after the base course is basically dry (for municipal works requiring surface decoration, it is better to scrape a layer before the surface construction putty )。 The surface layer can be sprayed with spray gun roller The construction spraying of such machines and tools must be smooth, even and free of color difference. The color boundary shall be straight and even.
