ApplicationNo. 06/849232 filed on 04/07/1986
US Classes:252/601, FIRE RETARDING106/18.11, Contains fireproofing agent252/602, Having disparate function252/62, HEAT OR SOUND INSULATING428/402, Particulate matter (e.g., sphere, flake, etc.)428/404, Silicic or refractory material containing (e.g., tungsten oxide, glass, cement, etc.)428/407, Including synthetic resin or polymer428/920, FIRE OR HEAT PROTECTION FEATURE428/921, Fire or flameproofing524/8Solid polymer derived from ethylenically unsaturated hydrocarbon only
ExaminersPrimary: Lechert, Stephen J. Jr.
Assistant: Locker, Howard J.
Attorney, Agent or Firm
International ClassesC04B 16/00 (20060101)
C04B 16/08 (20060101)
C04B 28/00 (20060101)
C04B 28/02 (20060101)
C09K 21/14 (20060101)
C09K 21/00 (20060101)
AbstractFireproofing 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.