| abstract |
The object of the present invention is to provide high fluidity at the time of pump pumping, excellent pumping efficiency, no fluidity immediately after spraying, and thick spraying, and excellent fire resistance without the risk of injury or cracking from the steel surface due to shrinkage. To provide a wet spray fireproof coating composition containing no inorganic fibers. The present invention is a wet spray refractory coating composition for spraying after mixing and mixing the slurry portion and the aluminum sulfate aqueous solution portion with a spray nozzle, wherein the slurry portion is 20 wt% based on the total solids as an essential component. Gypsum, (B) 5 to 40% by weight of hydrated lime and / or quicklime, (C) organic fibers and / or light weight aggregates, and water, and the content of the fire resistance improving element after drying is 20% by weight or more. It features. |