Method and apparatus for applying mortar or concrete

Details Method and apparatus for applying mortar or concrete Method and apparatus for applying mortar or concrete

E - Fixed Constructions

04

G

222/78.5

E04G 21/02 (2006.01)

Patent

CA 1197221

ABSTRACT OF THE DISCLOSURE Method and apparatus are provided for projecting mortar or concrete. The apparatus includes a first material supply pipe for conveying a first material under pressure, the first material comprising one of the ingredients of the mortar or concrete. A hopper is provided which is adapted to be charged with a second material, the second material comprising the other ingredient of the mortar or concrete. A second material supply pipe is connected to the hopper. A rotary screw is disposed in the second material supply pipe for mechanically conveying the second material supplied from the hopper. A rotary disc is provided for admixing the first material conveyed through the first material supply pipe, and the second material conveyed through the second material supply pipe, to project a resulting mixture. In this invention, the first material supply pipe, the second material supply pipe and the rotary disc are all arranged coaxially, and the first material supply pipe and second material supply pipe are arranged concentrically with one another. According to this invention, since green concrete is projected by centrifugal force instead of by pressurized air, quantities of dust and rebound formed at the projected surface are small, so that the period of projection of the con- crete or mortar can be increased.

397103

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