E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
72/21
E04F 21/02 (2006.01) B28C 5/12 (2006.01) C04B 40/00 (2006.01) C04B 40/06 (2006.01)
Patent
CA 1216165
Abstract of the Disclosure A process for the preparation and immediate use in situ of ready to use blends of structural material, such as plaster, mortar, stucco, tile adhesive or similar blends, which, in contrast to the usual methods does not use as a raw material a dry mixture of the three main components binder, filler and additives. Instead a dry mix of binder and filler is prepared at the building site, and an aqueous solution of the additives is added in a separate mixing operation, immediately followed by the application in situ of the finished blend. This method avoids the difficulties associated with the use of dry mixtures containing all three components. The invention includes an apparatus for mixing and immediate application of the blends as defined by the process claims. In an especially advantageous form of the invention, part of the aqueous solution of additives is added to the rest of the blend, after mixing and preferably at a point situated between the conveyor pump and the transport hose, in the form of a cylindri- cal thin concentric mantle surrounding a core of the wet blend. Much of the friction between the structural blend and the trans- port conduit can thus be avoided, as well as the wear associated with it. The application of the structural blend can be assisted by pressurised air injected into the stream upstream of the applicator nozzle. The stream of air may be loaded with airborne particles of silicone solution in order to impart water repel- lency to the structural layers made by the process.
450371
Fetherstonhaugh & Co.
Schonhausen Horst
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