Aggregate containing hydration water in spray applied fireproofi

Details Aggregate containing hydration water in spray applied fireproofi Aggregate containing hydration water in spray applied fireproofi

1993-12-23

1996-09-17

Gibson, Sharon

Compositions

Fire retarding

Material physically quantified

252601, 252602, 106695, 106 1826, 427403, 427405, 427427, G09K 2100, C04B11128

Patent

active

055565786

ABSTRACT:
Sprayable fireproofing compositions for structural members such as steel columns are provided. The compositions comprise a cementitious binder such as Portland cement, and a hard aggregate containing water of hydration. Such hard aggregates contribute not only to the strength of the fireproofing composition, but also contribute thermally. The product is produced by dry blending a mixture of the cementitious binder and hard aggregate, as well as other optional additives. Upon the addition of water, sprayable slurries are formed which can be pumped to the point of application. An accelerator is added in close proximity to the point of injection. Other additives may also be included, such as starch, adhesives and cement strength enhancers. The slurries adhere to the structural member in the slurried state and after setting to provide excellent fire and heat protection.

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