Mixer bucket (1) provided with a hopper (12) having a concave bottom portion (120) provided with an opening (122) arranged between a first and a second continuous portions (124)(126); a funnel-shaped member (30) being carried by the concave portion (120) so as to face the opening (122) and define a gravity discharge for mixture; the funnel-shaped member (30) being carried by the hopper (12) by means of a guide (128) aligned with the given direction (D); actuating means (40) being carried by the hopper (12) to move the funnel-shaped member (30) along the guide (128) between a first position (P1), where it faces the opening (122), and a second position (P2)(P3), lateral with respect to the opening (122) in correspondence of one of the first and second flanks (14)(16).

A method of retrofitting an existing apparatus for forming concrete products, where the apparatus comprises an existing component located upstream of a product mold and adapted to deliver treated concrete to the product mold, adapts the existing component to treat fresh concrete to be delivered to the product mold by a new component with treated water infused with a concentration of carbon dioxide nanobubbles. The step of adapting comprises adding to the existing component a water delivery system that is configured to direct the treated water into the fresh concrete, where the water delivery system is provided with one or more liquid manifolds configured to dispense the treated water into the fresh concrete to form treated concrete.

An apparatus for delivering a wet concrete mix to a product mold, where the apparatus comprises a hopper configured to retain a fresh concrete mix, a source of treated water having a concentration of nanobubbles of a gas at least double a natural concentration of nanobubbles of the gas within a natural state of the water, a water transport coupling the source of treated water with the hopper, a valve interposed within the water transport for selectively releasing the treated water into the hopper, and a mixer in communication with the hopper for mixing the treated water with the fresh concrete mix to yield an infused wet concrete.

A Mortar Delivery System is described. The Mortar Delivery System provides precise control of the delivery and application of mortar in addition to the mixing and tempering of mortar. Such control eliminates the use of a hand trowel in brick, block and stone laying applications. Sensing and control are integrated with the Mortar Delivery System to make it an important element of a robotic brick laying system. The Mortar Delivery System contains sensors to measure mortar viscosity and workability, mortar flow rate, and mortar nozzle pressure. The data from the Mortar Delivery System sensors can be used to change the rotational speed of the shear blades, change the amount of water being used for mixing or tempering, and change the delivery speed of the mortar. Such changes result in precise control of mortar that is in turn suitable for automated or semi-automated building processes.