Compositions of no mix compounds and methods of applying same

Details Compositions of no mix compounds and methods of applying same Compositions of no mix compounds and methods of applying same

C - Chemistry, Metallurgy

04

B

261/45

C04B 7/00 (2006.01) B01F 13/00 (2006.01) B05D 1/12 (2006.01) B28B 19/00 (2006.01) C04B 40/00 (2006.01) C04B 40/06 (2006.01)

Patent

CA 1333914

Dry cementitious compositions and packages and methods for their application. The dry compositions do not have to be mixed with water but instead are poured, sprayed or troweled onto a substrate which contains water in an amount in excess of that necessary for the hydration of the cementitious materials. These compositions can be applied by layering, dropping through a conduit, or preferably, merely dropped into the water. Also, a method of mixing materials is disclosed. A fluid medium, such as an aqueous fluid or a gas, is continuously introduced into a mixing column for a time sufficient to allow the fluid to at least substantially fill the column. A predetermined amount of at least one primary material is introduced into the upper end of the mixing column. The primary material is permitted to descend through the fluid medium at a predetermined rate. Secondary materials are introduced into the mixing column through at least one end or through at least one position along the side of the mixing column at an angle and velocity sufficient to cause the secondary materials to intimately contact the primary material along its path of descent through the fluid medium so that the primary and secondary materials are continuously mingled as they descend through the fluid medium until they reach the lower end of the mixing column. Another aspect of the invention relates to the mixed materials which are recovered from the lower end of the mixing column.

593629

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