Abstract: A device for adding and mixing an additive into a hydraulically settable mixture includes a tubular cavity for conducting the hydraulically settable mixture through in an intended flow direction, wherein a static flow-influencing element, in which there is an aperture that leads into the cavity and is intended for introducing the additive, projects into the cavity.

Abstract: The invention relates to a method for producing a coated basic material for a hydraulic composition (11) comprising a basic material (14, 16) and water (15). According to the invention, the basic material can consist of several sub-groups (14, 16) and at least one hydraulic binding agent (14) and to produce the hydraulic composition the basic material (14, 16) and the water (15) are mixed in a mixer (8). Prior to the mixing of the hydraulic composition, the basic material (14, 16) is at least partially coated with an additive (13). The invention also relates to a coated basic material to be used in concrete production, to an additive for concrete production and to a method for producing a hydraulic composition.

Abstract: A device for coating powdery material with at least one liquid additive, said device including a conveying device which contains a conveyor line which transports the powdery material, in addition to an introduction device for introducing the liquid additive onto the conveyor line comprising the powdery material, also including a cleaning device for cleaning the introduction device. Said introduction device includes a supply line and at least two nozzles, said liquid additive can be introduced onto the conveyor line and added to the powdery material by means of at least one nozzle. Also disclosed are a method for coating powdery material with at least one liquid additive and the use of a device for coating powdery material with at least one liquid additive.

Abstract: A device for coating powdery material with at least one liquid additive. Said device includes an introduction device which includes a supply line and at least two nozzles which can introduce the liquid additive onto the conveyor line and to the powdery material. Said outlet openings of the at least two nozzles are housed at a distance of between 0.5-10 m on the supply line. Also disclosed are a method for coating powdery material with at least one liquid additive and the use of a device for coating powdery material with at least one liquid additive.

Abstract: The invention relates to a method for producing a coated basic material for a hydraulic composition (11) comprising a basic material (14, 16) and water (15). According to the invention, the basic material can consist of several sub-groups (14, 16) and at least one hydraulic binding agent (14) and to produce the hydraulic composition the basic material (14, 16) and the water (15) are mixed in a mixer (8). Prior to the mixing of the hydraulic composition, the basic material (14, 16) is at least partially coated with an additive (13). The invention also relates to a coated basic material to be used in concrete production, to an additive for concrete production and to a method for producing a hydraulic composition.