Sprayable fireproofing composition
AssigneeW. R. Grace & Co.
InventorsLarry S. Shu, Walter R. Payment
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Abstract
Fireproofing compositions for steel structural members are provided. The compositions comprise a hydratable cementitious binder, shredded polystyrene aggregate, an air entraining agent, and a fibrous material. On addition of water, the compositions form settable, sprayable slurries which can be pumped to the point of application. The slurries are capable of spray application to steel structural members and adhere to the member in the slurried state and after setting. Excellent fire and heat protection is provided to the member despite the organic nature of the polystyrene aggregate.
Claims16
A dry composition comprising a hydratable cementitious binder, shredded polystyrene aggregate, an air entraining agent, and a fibrous component, said composition providing, on the addition of water, a settable slurry which is capable of spray application to a steel structural member and which, after spray application, is adherent to the member in the slurried state and after setting, said slurry, after setting, forming a fire and heat protective adherent coating on the member.
Dependencies are inferred from the claim text.