Abstract: Water-resistant gypsum products may be produced using a novel catalyst that includes calcium aluminate cement and/or calcium sulfoaluminate cement. For example, a water-resistant gypsum panel may have a core comprising: interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, wherein the interwoven matrices have dispersed throughout them a siloxane polymerization catalyst comprising (a) 55 wt % to 100 wt % calcium aluminate cement and/or calcium aluminate cement and (b) 0 wt % to 45 wt % and magnesium oxide, wherein the weight ratio of the siloxane polymerization catalyst to the calcium sulfate dihydrate is 0.01-5:100. The water-resistant gypsum panel may have an absence of one or more of: Portland cement, limestone, aragonite, calcite, dolomite, and slaked lime.

Abstract: Edge profile 10 for forming a part of a suspended ceiling substructure comprising a plurality of support profiles arranged suspended from a raw ceiling of a building structure and a plurality of base profiles, each of which being attached to at least one of the plurality of support profiles, the edge profile 10 having a U-shaped cross-section with a base portion 11 capable of being fixed to a wall structure, a first leg portion 12 and a second leg portion 13, the first leg portion 12 having an outer section 122 and an inner section 121, wherein the outer section 122 is arranged offset towards the second leg portion 13 relative to the inner section 121.

Abstract: An apparatus for inserting and removing a mixer rotor pin includes at least one rotor pin with a transverse bore, as well as a rod dimensioned for slidably engaging the transverse bore. The apparatus also includes a mixer rotor pin insertion and removal tool having a tool body. A bottom of the tool has a slot for selectively engaging the aforementioned rod upon insertion of the rod into the transverse bore, and a top of the tool has a non-circular socket for accommodating a driver tool.

Abstract: A process for producing a recess (“negative base”) in the base region of a wall construction in the drywall technique, preferably a wall construction with fire protection and/or sound insulation, wherein for the wall construction on a stud frame, using board-shaped construction elements, preferably construction elements containing gypsum and/or cement, a paneling is attached on both sides of the stud frame, and wherein at least one side of the stud frame is provided with a double-layer paneling, the outer paneling layer of which is recessed in order to produce the recess in the base region, a compensating insulant is introduced into the intermediate space between the panelings of the stud frame at least over the vertical height of the recess in the base region in order to compensate the weakening of the base region resulting from the recessed paneling.

Abstract: The invention relates to a drywall construction system comprising a plurality of metal profiles which at least on one side are panelled using dry construction boards. At least on this one side spring rails are arranged between the metal profiles and the dry construction boards. The invention is suitable, in particular, for improving sound insulation in lightweight steel constructions.

Abstract: Modular system for creating a structure, in particular a building component, comprising at least one post profile (2), at least one ceiling profile (3) and at least one floor profile (4) for a basic framework of a first modular unit (50, 50?, 50?, 50??), at least one further post profile (2), at least one further ceiling profile (3) and at least one further floor profile (4) for a basic framework of a second modular unit (50, 50?, 50?, 50??), and a module connector (38) for connecting the first and the second modular unit (50, 50?, 50?, 50??), wherein the post profile (2) has a first pin holding fixture (55) and the further post profile (2) has a second pin holding fixture (55), wherein the module connector (38) has a first connecting pin (39) for insertion into the first pin holding fixture (55) and a second connecting pin (40) for insertion into the second pin holding fixture (55), and wherein the module connector (38) has a supporting element (41) on which the first and second connecting pins (39, 40) are

Abstract: The invention concerns a gypsum plasterboard (10) comprising at least an upper gypsum layer (16) having a first density, first hardness and first thickness and a lower gypsum layer (17) having a second density, a second hardness and a second thickness. The first density is lower than the second density and/or the first hardness is lower than the second hardness, and the first thickness is lower than the second thickness. The plasterboard according to the invention are heavy or dense plasterboards with an enhanced fixing ability.

Abstract: The invention relates to screed mixtures, comprising an inorganic binder, processing additives and drying additives. Self-levelling floor screeds according to the invention can be produced from these screed mixtures, said self-levelling floor screeds drying much more quickly than self-levelling floor screeds with the same composition, but which contain no drying additives.

Abstract: A multilayered layered body comprising an evacuated thermal insulation body (12) having a core material (13), which is enclosed by a gas-tight film (16), wherein the thermal insulation body (12) has a first flat side (14) and a second flat side (15), which is arranged opposite of the first side, wherein a lamination layer (17) is laminated onto at least one flat side (14, 15).

Abstract: The invention relates to a conveyor line (1) for the continuous production of drywall boards as well as a slurry distributing device (22) which is used in this conveyor line (1). The distributing device is used for the uniform and low-speed flow distribution of slurries (20).

Abstract: The invention relates to a method for the automated decoration of a building board, comprising at least one smoothing compound layer and preferably at least one colour coat. The method comprises the steps of smoothing and decorating the building board, wherein the smoothing includes the steps of (i) calibrating the building board to a nominal thickness, so that a surface of the building board has a height difference of at most 1 mm, (ii) applying a layer of a smoothing compound, (iii) pressing the smoothing compound into the surface structures of the building board, and (iv) recalibrating to the nominal thickness. Preferably, a plurality of smoothing compound layers are pressed into a calibrated surface of the building board and partially ground away again. The method is particularly well suited for the production of fire-resisting building boards.

Abstract: The invention relates to building products that contain graphene and/or graphene oxide in the bulk component thereof. The addition of graphene and/or graphene oxide improves the mechanical properties of said building products, particularly in terms of strength.

Abstract: A corner section for installing a window or door frame in a sealing system is disclosed. The corner section has a corner region of a trough or a tanking, i.e., it is open on two sides and bent upwards on two sides to form a tanking. When installed, the corner region encloses a corner of a window frame or door frame and is in contact with the reveal. The open sides are positioned in horizontal window direction and face the outside of the reveal. The corner section ensures that the system is sealed against driving rain and provides for a second water-drainage level in the system.

Abstract: The invention pertains to a process for modifying gypsum, wherein a continuous feed of raw gypsum is provided; the water content of the raw gypsum is determined in the continuous feed by near infrared spectroscopy (NIR) measurement; the raw gypsum is calcined in a calcination unit at a fire rate to remove water from the raw gypsum and to obtain a continuous feed of calcined gypsum having a water content within a selected range; a water content of the calcined gypsum is determined by near infrared spectroscopy, and the fire rate is adjusted based on the water content of the raw gypsum and of the calcined gypsum. Further, the invention pertains to an apparatus for performing said process.

Abstract: A bullet projectile resistant drywall structure for building a rifle bullet resistant separation wall, the drywall structure comprising a plurality of drywall profiles arranged in a manner so as to form a drywall sub structure capable of attaching building boards thereto, each drywall profile having a base portion and connected thereto parallel extending flange portions with an outer site capable of fixing building boards thereto by screws; a plurality of inner gypsum fiber boards arranged between the drywall profiles so as to extend between adjacent base portions of the drywall profiles and a plurality of outer gypsum fiber boards respectively attached to both outer sides of the parallel extending flange portions.

Abstract: A method for producing a gypsum plasterboard comprising the steps of providing bundler dust obtained from gypsum plasterboard leftovers of a plasterboard trimming process by a trimming device, in particular by a bundler saw; and adding at least a part of the bundler dust to a gypsum slurry for producing the gypsum plasterboard.

Abstract: A gypsum fiber board produced in a Siempelkamp dry-process, comprising 75 wt % to 90 wt % (relative to the total dry mix) of calcium sulfate hemi-hydrate and 10 wt % to 25 wt % (relative to the total dry mix) paper fibers, wherein the calcium sulfate hemi-hydrate is a mixture of ?-calcium sulfate hemi-hydrate and ?-calcium sulfate hemi-hydrate, wherein the content of ?-calcium sulfate hemi-hydrate in the mixture is at least 5 wt % (relative to the total calcium sulfate hemi-hydrate) is disclosed. Also disclosed is a method for producing a gypsum fiber board of a thickness of 23 mm in a Siempelkamp dry-process.

Abstract: The subject matter of the present invention is a method for producing coated, and in particular painted, building boards (1), preferably for the interior finishing of buildings. First, the respective building board (1) is provided on its longitudinal edges (2) and/or transverse edges with a bevel (4). Then, the respective building board (1) is transferred to a rubber-like transporting belt (7) in such a way that the edges (2) respectively provided with the bevels (4) are arranged transversely in relation to the conveying direction (F) of the transporting belt (7) and the bevels (4) are arranged adjacent to a visible side (6) of the building board (1), facing away from the transporting belt (7).

Abstract: Sound-permeable lining (1) for covering perforations (21) shaped in an acoustic plasterboard (2). The sound-permeable lining (1) comprises a first ply (12) of a fleece material and attached thereto a second ply (14) which is arranged in between of the first ply (12) and the acoustic plasterboard (2) to which the sound-permeable lining (1) is to be applied. The second ply (14) being of a foil material having a second opacity O2 and a plurality of through-holes (141) formed therein. The first ply (12) has a first opacity O1 so that the through-holes (141) formed in the second ply (14) are invisible through the first ply (12) and so that the applied sound-permeable lining (1) has an overall opacity O12 to allow for optically covering the perforations (21) shaped in the acoustic plasterboard (2) and an overall air flow resistivity Rs12 to allow for the penetration of air so that sound can propagate via the sound-permeable lining (1).

Abstract: The invention pertains to a process for modifying gypsum, wherein a continuous feed of raw gypsum is provided; the water content of the raw gypsum is determined in the continuous feed by near infrared spectroscopy (NIR) measurement; the raw gypsum is calcined in a calcination unit at a fire rate to remove water from the raw gypsum and to obtain a continuous feed of calcined gypsum having a water content within a selected range; a water content of the calcined gypsum is determined by near infrared spectroscopy, and the fire rate is adjusted based on the water content of the raw gypsum and of the calcined gypsum. Further, the invention pertains to an apparatus for performing said process.