23 results about "Stucco" patented technology

The present invention relates to a high-strength gypsum plasterboard incorporating milled waste mineral wool. The plasterboard comprises milled waste mineral wool in a range of 0.1% to 10% by weight relative to stucco, with fibre lengths ranging from 0.1 to 2000 pm. The milled waste mineral wool enhances the flexural strength and core hardness of the plasterboard. The effective utilization of milled waste mineral wool contributes to sustainability by repurposing industrial by-products and enhancing the performance characteristics of gypsum plasterboards in construction applications.

A longitudinally-extending casing bead with a base side and an upwardly extending wall along one edge thereof is described that includes an integrated gap portion that extends outwardly from an outer surface of the upwardly extending wall. Importantly, the gap portion configured to both allow an installer to quickly, easily and accurately position the casing bead a predetermined distance from a window or door frame, and allow for the expansion and contraction of the stucco and framing by controlled flexing to prevent the transfer of excessive damage-inducing forces therebetween.

A dry construction plaster composition made with at least stucco in an amount from about 25 to about 99 wt %; hydrated lime in an amount from about 0.5 to about 75 wt %; a phosphate-based lime bucking inhibitor in an amount from about 0.01 to about 1 wt %; and a setting reaction controlling agent, wherein the setting reaction controlling agent comprises a set accelerator, a set inhibitor, or any combination thereof is provided. Methods for preparing construction plaster slurries and pastes with reduced lime bucking and methods for finishing a substrate are also provided.

Disclosed are gypsum boards and methods of board preparation. The board comprises a set gypsum core, with a cover sheet disposed on either side of the core. The core is formed from a mixture containing water, stucco, uncalcined gypsum, and optional additives, the mixture having a low water-to-solids ratio. A hydration reaction occurs between water and stucco. The water amount can be, e.g., 0% to 30%, such as 1% to 25% or 1% to 20%, higher than the stoichiometric amount for hydration. For board preparation, an industrial press (e.g., hydraulic or pneumatic) or rollers can be used to form designated board thickness. Green technology is deployed since less energy is consumed to calcine the gypsum into stucco (inasmuch as some solids content need not be calcined because of the uncalcined gypsum content in the mixture) and for board drying. Improved production efficiencies and high-quality product with strength are achieved.

In one aspect, a pottery plaster formulation with increased water absorption, comprising alpha stucco, continuously-calcined-in-a-kettle stucco, and a combination of Rochelle salt and one or more of the following: potassium sulfate and / or a phosphate compound. In another aspect, pottery plaster molds with increased water absorption and methods of making and using the pottery plaster molds for slip casting ceramic items.

Method for manufacturing a mold comprising cracking particles. The invention relates to a method for manufacturing a mold for molten metal comprising at least the following steps: the formation of a mold precursor comprising at least the following substeps: dipping a wax model of the mold in a contact slip; a stucco step with a contact stucco; a drying step; thickening the formed mold precursor, comprising one or more thickening cycles, each thickening cycle comprising at least the following substeps: a dipping step in a reinforcing slip; a stucco step with a reinforcing stucco; a drying step; a finalization step of the thickened mold comprising at least the following substeps: a dewaxing step;and a heat treatment step, the process being characterized in that, during at least one thickening cycle, the reinforcing stucco comprises crack-forming particles. Figure for the abstract: None;

Venexian ProMix is ​​a decorative stucco that combines tradition and modernity. Its unique composition is based on a blend of handcrafted acrylic stucco (65%) and lime stucco (35%), enriched with a handcrafted wax for a glossy finish. The process includes a three-coat application and final polishing, guaranteeing a high-end aesthetic and a low environmental impact.

The invention relates to a method for producing a total gypsum mixture as a spreadable stucco gypsum mixture from dry gypsum with the addition of water, characterised in that the total dry gypsum is divided into a first and a second partial quantity, in that the quantity of the total added water required at least for the first and the second partial quantity corresponds to the stoichiometric water requirement of the gypsum content of the total gypsum mixture, in that the gypsum mixture is produced in a two-stage mixing process, wherein, in a first mixing step, the first partial quantity of the gypsum is produced as a first partial mixture by adding water as a gypsum foam, and in that, in a second mixing step, the second partial quantity is added as a second partial mixture to the first mixture and thus a spreadable gypsum mixture is produced as a total gypsum mixture and the gypsum foam is destroyed again in the process.

The present invention relates to a method for the manufacture of a moisture-resistant plasterboard, comprising : - providing a composition comprising water, stucco, a silicone and a ketene dimer, - casting the composition on a first liner, so as to form a wet gypsum layer on said first liner, - providing a second liner on said wet gypsum layer, thereby forming a wet plasterboard, and - drying the wet plasterboard, so as to form the plasterboard, wherein the weight ratio of silicone to ketene dimer in said composition is from 1 / 50 to 1 / 1. It also relates to a moisture-resistant plasterboard made by such a method. It also relates to a composition comprising water, stucco, a silicone and a ketene dimer, wherein the weight ratio of silicone to ketene dimer in the composition is from 1 / 50 to 1 / 1.

Wall structures include: a wall frame made from a plurality of studs or other structural elements and optionally wall sheathing; first lightweight composite panels fastened to the wall frame to form a first wall substructure; and lightweight composite panels fastened to the wall frame to form a second wall substructure opposite the first. A complete wall can have an interior wall and exterior wall, two interior walls, or two exterior walls. Interior walls may include lightweight composite panels having a polymer, plaster, or paper show surface. Exterior walls may include lightweight composite panels with exterior finish, such as stucco, brick veneers, tiles, or stone. Lightweight composite panels are fastened to the sheathing and / or studs by screws, other mechanical fasteners, and / or adhesive. Lightweight composite panels include a foam core and fiber mesh reinforced cementitious (or other protective) layers formed on the foam core.

Tile 2 for holding a wet mix building material like mortar, stucco, plaster or concrete, and comprising side walls 8a, 8b, 8c, 8d and top 4 and lowermost 6 surfaces, where a grip region 20a, 20b, 20c,

This disclosure relates more particularly to calcium sulfate-based suspensions useful, for example, for making gypsum boards for building construction, as well as methods for using them, for example, for making gypsum boards; in one aspect, this disclosure provides a calcium sulfate suspension composition comprising calcium sulfate basically present in the form of one or more hydrates, the calcium sulfate being present in an amount in the range of 70-99.8% w / w on a dry basis, calculated as stucco; and a cationic starch present in an amount of 0.10-10% w / w of the amount of calcium sulfate as stucco on a dry basis, the cationic starch being substituted by amine and / or ammonium groups and having a %N value in the range of 0.10% pa 2% w / w, and an RVA viscosity value of at least 100 cP at 65 °C and 16% w / w; and water, in a sufficient quantity to form a suspension; the disclosure further provides gypsum-based materials useful as building materials, for example, for use as building boards in the construction of building walls and ceilings.

Exterior wall structures or roofing decks include an exterior wall or roof frame and lightweight composite panels fastened thereto as sheathing and / or substrates to which exterior finishes are applied. Lightweight composite panels include a foam core and protective layers formed over and covering the foam core. The foam core may include extruded polystyrene (XPS), other polymer foam material, or inorganic foam material. The protective layers may include a fiber mesh reinforced cementitious composition, thermoset polymer, or other rigid material. Joints between adjacent composite panels are sealed using sealing tape, polyurethane foam, and / or other sealant Lightweight composite panels can be fastened to studs or trusses suing screws, nails, adhesives, and other fasteners known in the art. The exterior wall structure or roofing deck is strong, waterproof, fire-resistant, resists water damage, and facilitates application of different finishes such as stucco, brick veneers, stone and masonry, shingles, roofing tiles, and metal cladding.

An agitator for a gypsum wallboard mixer is provided and includes a circular disc with an upper surface, a drive shaft extending vertically from the upper surface, a lump ring secured to the upper surface, the lump ring being provided in a plurality of spaced, adjacent arcuate segments.

Disclosed are gypsum boards and methods of board preparation. The board comprises a set gypsum core, with a cover sheet disposed on either side of the core. The core is formed from a mixture containing water, stucco, uncalcined gypsum, and optional additives, the mixture having a low water-to-solids ratio. A hydration reaction occurs between water and stucco. The water amount can be, e.g., 0% to 30%, such as 1% to 25% or 1% to 20%, higher than the stoichiometric amount for hydration. For board preparation, an industrial press (e.g., hydraulic or pneumatic) or rollers can be used to form designated board thickness. Green technology is deployed since less energy is consumed to calcine the gypsum into stucco (inasmuch as some solids content need not be calcined because of the uncalcined gypsum content in the mixture) and for board drying. Improved production efficiencies and high-quality product with strength are achieved.

Exterior wall structures include exterior walls and lightweight composite panels to which an exterior finish is applied. Exterior wall structures may include wooden or metal studs to which sheathing (e.g., OSB panels or composite sheathing panels) are fastened. A drainage layer can be positioned between sheathing and lightweight composite panels to which an exterior finish is applied. Lightweight composite panels are fastened to sheathing and / or studs by screws, nails, rivets, other mechanical fasteners, and / or adhesive. Lightweight composite panels can include a polymer foam core with interior and exterior surfaces and fiber mesh reinforced cementitious layers formed over and covering the foam core surfaces. Joints between adjacent lightweight composite panels can be sealed using sealing tape, mesh tape and a seam coat, polyurethane foam, and / or other sealants. The exterior wall structure is waterproof, fire-resistant, and facilitates application of different finishes, such as stucco, tiles, or stone, masonry, or brick veneers.

The present invention is concerned with a process for the processing of gypsum powder, wherein gypsum powder having a bulk density of 990 g / L or less is subjected to compression treatment at a pressure of at least 0.1 N / mm2 and a stabilization treatment, wherein, when a gypsum powder is processed, the gypsum powder is subjected to a calcination treatment before the stabilization treatment. By such processing, it is possible to significantly reduce the water demand of stucco powder having a low bulk density, as is often the case for recycled stucco, which improves the processing speed and reduces the energy demands for respective gypsum powders. The present application is further concerned with a respective use of the inventive process for reducing the water demand of stucco made from recycled gypsum and the use of the produced recycled stucco for the production of gypsum articles.

Exterior wall structures or roofing decks include an exterior wall or roof frame and lightweight composite sheathing panels fastened thereto by screws, other mechanical fasteners, and / or construction adhesive. Lightweight composite sheathing panels include a foam core and protective layers formed over and covering the foam core. The foam core may include extruded polystyrene (XPS), other polymer foam material, or inorganic foam material. The protective layers may include a fiber mesh reinforced cementitious composition, a thermoset polymer, or other rigid material. Joints between adjacent composite sheathing panels are sealed using sealing tape, polyurethane foam, and / or other sealant Lightweight composite sheathing panels can be fastened to studs or trusses suing screws, nails, adhesives, and other fasteners known in the art. The exterior wall structure or roofing deck is waterproof, fire-resistant, resists water damage, and facilitates application of finishes such as stucco, brick veneers, stone and masonry, shingles, roofing tiles, and metal cladding.

The utility model relates to plaster gypsum screening device technical field, concretely is a kind of screening device for high-strength plaster gypsum processing, it includes: screening box, screening box top is provided with feed hopper, and screening box top is connected with servo motor by L-shaped frame board, and servo motor output end is connected with the pole lever of setting, and screening box top is connected with the fixed platform of setting;The material shaking assembly is set on the fixed platform;After the mounting block positioning is embedded into the installation slot, the boss of U-shaped plugboard both sides is inserted into first insertion slot and second insertion slot, and after the position of U-shaped plugboard is fixed, rubber knock hammer is installed on mounting platform quickly, pole lever rotates and drives L-shaped pole lever to realize that pull spring is pulled to store power, and spring reset makes rubber knock hammer knock feed hopper side wall, avoid the stacking phenomenon that plaster gypsum is poured into feed hopper, personnel need not with the aid of auxiliary tool manual knock feed hopper side wall, and rubber knock hammer can be replaced after wearing.

The present invention relates to a high-strength gypsum plasterboard incorporating milled waste mineral wool. The plasterboard comprises milled waste mineral wool in a range of 0.1% to 10% by weight relative to stucco, with fibre lengths ranging from 0.1 to 2000 μm. The milled waste mineral wool enhances the flexural strength and core hardness of the plasterboard. The effective utilization of milled waste mineral wool contributes to sustainability by repurposing industrial by-products and enhancing the performance characteristics of gypsum plasterboards in construction applications.

The application discloses a product drying process temperature adjusting system and method and a preparation method of plastering gypsum, relates to the technical field of temperature regulation, and is characterized in that sensors are arranged at key points of a preparation environment of the plastering gypsum, and a historical / real-time temperature matrix is constructed; historical temperature data are classified based on a particle swarm algorithm, current abnormal temperature is identified, and real-time regulation is performed; a neural network model is trained by using a simulated annealing algorithm, and future temperature trends are accurately predicted; environment temperature is intervened in advance according to a prediction result, the system comprises data acquisition, classification regulation, model training and prediction application modules; when the plastering gypsum is prepared, dynamic temperature control is realized in the raw material mixing, drying and grinding stages; temperature fluctuation is reduced, product drying uniformity, strength qualification rate and production efficiency are improved, and energy consumption and labor cost are reduced.

Wall structures include: a wall frame made from a plurality of studs or other structural elements and optionally wall sheathing; first lightweight composite panels fastened to the wall frame to form a first wall substructure; and lightweight composite panels fastened to the wall frame to form a second wall substructure opposite the first. A complete wall can have an interior wall and exterior wall, two interior walls, or two exterior walls. Interior walls may include lightweight composite panels having a polymer, plaster, or paper show surface. Exterior walls may include lightweight composite panels with exterior finish, such as stucco, brick veneers, tiles, or stone. Lightweight composite panels are fastened to the sheathing and / or studs by screws, other mechanical fasteners, and / or adhesive. Lightweight composite panels include a foam core and fiber mesh reinforced cementitious (or other protective) layers formed on the foam core. Joints between adjacent panels are sealed using sealing tape, mesh tape and a seam coat, polyurethane foam, and / or other sealants.

A construction tie for securing vertical U-channels of a motorized retractable screen unit to surrounding building material, such as brick, stone, or stucco. The tie includes a U-shaped clip that closely conforms to the shape of the U-channel. One or more flanges extend laterally from the clip to overlie the adjacent bricks. A plurality of these ties may be spaced vertically along the length of the U-channel. Once the brick façade is complete, the ties are not visible. Making the ties out of magnetically detectable material allows for locating their positions. The number of flanges may vary; one may extend from each side of the clip, or a single flange may extend rearwardly from the back of the base. A method of installing a screen unit may include the use of the inventive construction ties. A kit for installing the screen unit may include a plurality of the ties.