Abstract: The invention relates to a method for producing a hydraulically-bonded multilayer panel with at least one face layer and at least one core layer, wherein the method comprises the following steps a. introducing a flowable face mixture into a mold. The face mixture contains at least the following components i. face paste containing at least 1. hydraulic binder and 2. water; and ii. aggregate. The aggregate has a mean diameter d50 determined according to ISO 13320:2009 and/or according to EN 12620 of greater than 100.0 ?m; whereby a face mixture layer is formed; b. introducing a dry to earth-moist core mixture into the mold, wherein the core mixture contains at least the following components i. core paste containing at least 1. hydraulic binder, 2. fines, wherein the fines have a mean diameter d50 determined according to ISO 13320:2009 of up to 100.0 ?m, and 3. water; and ii.

Abstract: What is shown and described is a concrete element including a core concrete layer and a face concrete layer, the face concrete layer being obtained by compacting and hardening a mixture containing a latent hydraulic binder and/or a pozzolanic binder, water, a granular material and an alkaline hardener, with the granular material having, at a screen hole width of 2 mm, a through fraction from 35.5 wt. % to 99.5 wt. % and, at a screen hole width of 0.25 mm, a through fraction from 2.5 wt. % to 33.5 wt. %, each based on the total weight of the granular material.

Abstract: A method for producing a printed concrete element, in particular a printed concrete block, a printed concrete slab or a printed concrete step, is described, comprising at least the following steps: filling concrete into a mold to form a concrete element; printing at least one surface area of the concrete element with a printing composition comprising a binder A and a dye B, the binder A containing at least one siloxane and at least one silane; and curing the concrete element after printing.

Abstract: The invention relates to a concrete element comprising a core concrete layer and a face concrete layer, wherein the concrete element is obtained by compressing and curing a core concrete layer mixture in contact with a face concrete layer mixture, wherein the core concrete layer mixture contains a latent hydraulic core binder and/or a pozzolanic core binder, water, a granular core material and an alkaline core curing agent, wherein the face concrete layer mixture contains a latent hydraulic face binder and/or a pozzolanic face binder, water, a granular face material and an alkaline face curing agent, and wherein the concrete element has a compressive strength in accordance with DIN EN 12390-3, in particular DIN EN 12390-3:2019-10, measured after 28 days, of less than 120 N/mm2. The invention also relates to a method for producing the concrete element.

Abstract: The invention relates to a method for producing a hydraulically-bonded multilayer panel with at least one face layer and at least one core layer, wherein the method comprises the following steps a. introducing a flowable face mixture into a mold. The face mixture contains at least the following components i. face paste containing at least 1. hydraulic binder and 2. water; and ii. aggregate. The aggregate has a mean diameter d50 determined according to ISO 13320:2009 and/or according to EN 12620 of greater than 100.0 ?m; whereby a face mixture layer is formed; b. introducing a dry to earth-moist core mixture into the mold, wherein the core mixture contains at least the following components i. core paste containing at least 1. hydraulic binder, 2. fines, wherein the fines have a mean diameter d50 determined according to ISO 13320:2009 of up to 100.0 ?m, and 3. water; and ii.

Abstract: What is shown and described is a concrete element including a core concrete layer and a face concrete layer, the face concrete layer being obtained by compacting and hardening a mixture containing a latent hydraulic binder and/or a pozzolanic binder, water, a granular material and an alkaline hardener, with the granular material having, at a screen hole width of 2 mm, a through fraction from 35.5 wt. % to 99.5 wt. % and, at a screen hole width of 0.25 mm, a through fraction from 2.5 wt. % to 33.5 wt. %, each based on the total weight of the granular material.

Abstract: A device (1, 1?) is depicted and described for processing concrete blocks (2), including: a transport device (3) for the transport of concrete blocks (2), and means (4, 4?) for the mechanical processing of the edges of the concrete blocks (2), wherein the means (4, 4?) for the mechanical processing are arranged above the transport device (3). In order to be able to process the concrete blocks (2) in a constructively simple manner with low mechanical stress, it is proposed, to pivot-mount the means (4, 4?) for the mechanical processing. In addition, a method for processing concrete blocks (2) is depicted and described.

Abstract: Presented and described is a method for manufacturing concrete elements having at least one concrete layer, wherein concrete for at least one element is introduced into a mould, the concrete is compacted by vibration and/or by tamping and subsequently cures, wherein to the concrete layer, prior to compaction, at least one portion of a granular material is applied by means of an application device, where the concrete introduced into the mould has a water/binder (w/b) ratio of 0.30 to 0.50 prior to curing and where as granular material a material is used comprising (a) a scatter component having an average particle diameter of 0.1 to 5 mm in an amount of 65 to 95 wt % and (b) binder in an amount of 5 to 35 wt %, based in each case on the overall composition of the granular material.

Abstract: Presented and described is a method for manufacturing concrete elements having at least one concrete layer, wherein concrete for at least one element is introduced into a mould, the concrete is compacted by vibration and/or by tamping and subsequently cures, wherein to the concrete layer, prior to compaction, at least one portion of a granular material is applied by means of an application device, where the concrete introduced into the mould has a water/binder (w/b) ratio of 0.30 to 0.50 prior to curing and where as granular material a material is used comprising (a) a scatter component having an average particle diameter of 0.1 to 5 mm in an amount of 65 to 95 wt % and (b) binder in an amount of 5 to 35 wt %, based in each case on the overall composition of the granular material.

Abstract: A method for producing a printed concrete element, in particular a printed concrete block, a printed concrete slab or a printed concrete step, is described, comprising at least the following steps: filling concrete into a mold to form a concrete element; printing at least one surface area of the concrete element with a printing composition comprising a binder A and a dye B, the binder A containing at least one siloxane and at least one silane; and curing the concrete element after printing.

Abstract: Presented and described is a method for manufacturing concrete elements having at least one concrete layer, wherein concrete for at least one element is introduced into a mould, the concrete is compacted by vibration and/or by tamping and subsequently cures, wherein to the concrete layer, prior to compaction, at least one portion of a granular material is applied by means of an application device, where the concrete introduced into the mould has a water/binder (w/b) ratio of 0.30 to 0.50 prior to curing and where as granular material a material is used comprising (a) a scatter component having an average particle diameter of 0.1 to 5 mm in an amount of 65 to 95 wt % and (b) binder in an amount of 5 to 35 wt %, based in each case on the overall composition of the granular material.

Abstract: A device (1, 1?) is depicted and described for processing concrete blocks (2), including: a transport device (3) for the transport of concrete blocks (2), and means (4, 4?) for the mechanical processing of the edges of the concrete blocks (2), wherein the means (4, 4?) for the mechanical processing are arranged above the transport device (3). In order to be able to process the concrete blocks (2) in a constructively simple manner with low mechanical stress, it is proposed, to pivot-mount the means (4, 4?) for the mechanical processing. In addition, a method for processing concrete blocks (2) is depicted and described.