Patent ID: 6126307
Filing Date: 2000-10-03
Classification: B28C,C04B

Abstract:
An apparatus for making concrete, comprising:one or more measurement devices that are used to provide controlled quantities of at least cement and sand;a batch discharge mixer, said mixer receives the controlled quantities of the cement and sand, mixes the controlled quantities of the cement and sand to produce grout, and outputs a flow of grout, said mixer including a mixing container including a rotatable mixing head disposed therein for rotation about a vertical axis, said mixing head mounted to a shaft coupled to a motor, the mixing head having a plurality of short blades mounted on the periphery thereof, said mixing head having a cap for directing materials to the blades; anda controller coupled to said measurement devices and said mixer, said controller monitors and controls mixing energy applied by said mixer and absorbed by the grout during mixing,wherein said mixer further includes a discharge gate, and said controller operates to control the mixing energy by controlling the degree of opening of the discharge gate.