Method of ceiling tiles deflection reducing and ceiling tiles
SUBSTANCE: invention relates to acoustic ceiling panels. Coated ceiling tile with high stability of geometrical dimensions contains basic ceiling tile, having face front and rear side opposite to front side. Front side is directed inside room and visible for people in room, when coated ceiling tile is installed in room. Thin coating with thickness from approximately 100 mqm to approximately 1,000 mqm is applied on said rear side. Said thin coating consists of twisted matrix of calcium sulfate dihydrate crystals, applied on rear side, which provides ceiling tiles deflection reduction, wherein providing sound absorption by coated ceiling tiles, without sound reflection back to room filled with people.
EFFECT: front side does not contain thin coating.
5 cl, 3 tbl, 4 ex
SUBSTANCE: invention relates to the means for improving structural panels, in particular to ceiling tiles designed based on aqueous slurry or water-based slurry. Ceiling tiles comprise a core, outer coating on the front side of tiles and waterproof coating on the rear side of tiles, in this case the core has a filler, binding component and fibrous elements formed during drying of water-based suspension or slurry of their fibrous elements, is made water-permeable and contains colour spot forming materials, used during its manufacture, subjected to water washout during its passage through the core. The outer coating has high reflecting power due to the content of white-painted components and implementation of moisture-resistant coating with possibility of water passage, capable to repel water droplets, accumulating on the rear side of tiles. Method for manufacturing the waterproof ceiling tiles is also described.
EFFECT: increase of water-repellent properties of building tiles.
8 cl, 2 dwg
SUBSTANCE: suspended system of the invention meets the requirements of seismic regulation and comprises facilities for mechanical balancing and matching of suspended modules relative to each other.
EFFECT: system requires minimum quantity of points of fixation to a ceiling structure of a building.
11 cl, 9 dwg
SUBSTANCE: slab is made of gypsum and cellulose fibres, which are moulded to form a panel. Gypsum and fibres are evenly mixed in a water-based suspension, which hardens and after is exposed to pressing and drying. The dried panel is processed to make multiple holes on its face side. Total volume of holes is sufficient to reduce panel weight by at least 10% and to increase coefficient of noise absorption. The panel is made of cellulose fibre and gypsum, in proportion of mainly from 8% to 30% in weight, which is exposed to calcination in water suspension under pressure, and afterwards it is exposed to recrystallisation in cavities and cracks of cellulose fibres.
EFFECT: increased coefficient of noise absorption and reduced falling of residual gypsum from cut holes.
10 cl, 4 dwg
SUBSTANCE: invention relates to the sound-insulating elements. Laminated sound-insulating structural panel comprises two plates (10, 13) made of plasterboard, connected by the layer (16) of glue. Panel is characterized by dynamic Young's modulus from 0.1 to 5 GPa and loss factor of suppression of 5-30% (η=0.05-0.3). Content of glue (16) applied on the surface of plate (10, 13) is of 80-250 g/m2. At 20°C, the glue has the dynamic Young's modulus from 0.1 to 50 MPa at frequency of 100 Hz and/or from 0.5 to 100 MPa at frequency of 1000 Hz and loss factor is not less than 50% (η>0.5).
EFFECT: invention simplifies manufacturing process of the panel and increases its insulating properties, as well as reduces the panel weight and costs for its manufacturing.
14 cl, 2 dwg
SUBSTANCE: panel comprises a ground renewable component in amount from approximately 0.1% to approximately 95% by weight. In a version of realisation the panel has at least one core and comprises: from approximately 0.1% to approximately 95% by weight of the ground renewable component, from approximately 0.1% to approximately 95% by weight of one or more inorganic fibres, from 0.1% to 30% by weight of one or more binding substances, relative to dry weight of the panel. In a version of realisation the ground renewable component has such distribution of particle sizes, when less than 5% of particles are caught by a sieve with holes sized as 0.312 inches, and less than 5% particles go through a sieve with holes sized as 0.059 inches. The method to manufacture soundproof panels includes the following stages, when: they select a ground renewable component; sort the ground renewable component to produce the necessary distribution of particle sizes; combine the ground renewable component, fibres and binding substance with water; prepare a water slurry; form the main mat from the slurry on a wire net with holes; remove at least some water from the main mat; and perform final treatment of the specified main mat for formation of the soundproof panel.
EFFECT: invention makes it possible to improve acoustic and physical properties of a panel.
8 cl, 8 tbl
SUBSTANCE: material has weight referred to an area unit of less than 60 g/m2, contains less than 15 g/m2 of adhesive substance and less than 5 g/m2 of the binder. The material also contains a layer with a weight referred to an area unit of not more than 45 g/m2, including a mixture of fibres of more than 30 g/m2 and not more than 10 g/m2 of burning inhibitor. Application of structures is described, which contain the specified acoustic material and the perforated metal ceiling element and having, when measured in compliance with DIN EN 13823, the value of SMOGRA of not more than 30 m2/s2 and the value of TSP(600 s) of not more than 50 m2.
EFFECT: absence of problems in processing and production of least possible amount of smoke in case of fire.
9 cl, 1 dwg, 2 ex
SUBSTANCE: ceiling panel includes a mat made of suspension with rated thickness from 1.25 to 1.9 cm and containing at least 75 wt % of mineral wool and 3 wt % of binder. The binder is substantially distributed along the mat thickness and serves to give strength of mineral wool fibres, having a zone with higher content of binder on the face side of the mat. This zone is characterised with content of the binder per unit of thickness that is considerably higher that the content of the binder per unit of thickness of the main part of the mat, approximately from 1/5 to ј of the total quantity of the binder. The remaining binder is distributed in the remaining part of the mat inside the zone with higher content of the binder, as a result the panel resistance to physical damage increases, while the total content of the binder in the panel is reduced. Another version of a ceiling panel is characterised.
EFFECT: increased strength and wear resistance of panel, improvement of its sound-absorbing properties.
8 cl, 8 tbl
SUBSTANCE: invention is related to perforated panel on the basis of gypsum, to method of its manufacturing and method of its installation. Gypsum-based perforated panel with front and back sides and four side surfaces. Two side surfaces are arranged in the form of stepped rabbet, which is arranged so that in process of perforated panel installation with side arranged in the form of stepped rabbet in contact with the second perforated panel, identical distance is provided between openings. System is characterised with at least two perforated gypsum-based panels. Method for manufacturing of perforated panel is characterised. Methods for installation of perforated panel are characterised.
EFFECT: improved joint of panels.
17 cl, 12 dwg
SUBSTANCE: method for continuous manufacturing of acoustic panel includes stages, at which the following actions are realised: preparation of mixture that contains water and burnt gypsum; addition of foaming agent into aqueous mixture of burnt gypsum; mixture pouring with creation of continuous tape; tape maintenance under conditions sufficient for burnt gypsum to create interlaced fixed matrix from hardened gypsum; tape cutting with creation of precursor of moist acoustic panel; and drying of moist acoustic panel to obtain acoustic panel, in which acoustic panel is characterised by value of normal accidental sound absorption equal to at least 0.32, in accordance with modified ASTM E 1050-98. The following are also characterised: the second version of method for manufacturing of acoustic panel and versions of manufactured panels.
EFFECT: higher manufacturability with preservation of physical-mechanical and performance characteristics of panels.
FIELD: aircraft, ship construction and other industries, particularly laminated sound-absorbing panels provided with light-weight filler of corrugated sheet material.
SUBSTANCE: sound-absorbing panel comprises upper and lower coverings and zigzag filler arranged in-between. The coverings and filler are formed of composite material including phenol binding agent and fabric filler. Binding material content in upper covering is 5-20% by weight and in lower covering is 30-50% by weight. Zigzag filler includes Z-shaped corrugations with teeth inclined at 40-50° angles to sound propagation direction.
EFFECT: increased sound absorption in wide frequency range and decreased labor inputs for panel production.
2 cl, 1 tbl, 1 dwg
FIELD: building units, particularly sound-proof units to be connected to building frame.
SUBSTANCE: building structure comprises at least the first sound-proof unit including rock wool panel and bearing member for rock wool panel. Bearing member comprises a pair of lower and upper profiles spaced P distance one from another and having opposite walls and shoulders extending perpendicular to corresponding neighboring walls. Shoulders are arranged in single plane and directed one to another. Rock wool panel is installed between walls of profiles. Attached to outer sides of profile shoulders is rigid panel. Upper profile has the second shoulder arranged from another wall side extending parallel to shoulder and located opposite to it. The second shoulder secures sound-proof unit to building frame. Lower profile comprises connecting belt extending parallel to shoulder and located opposite to it. Upper profile has groove to connect wall to securing shoulder. Connecting belt of lower profile of the second sound-proof unit to be connected to the first one cooperates with upper profile groove.
EFFECT: improved sound-proofing properties, simplified fixation to building frame and reduced cost of building erection.
2 cl, 8 dwg
SUBSTANCE: invention relates to a production of construction materials and deals with a method of manufacturing a glass-magnesite product. A magnesium oxide, a filling agent, magnesium chloride are mixed, the obtained mixture is moulded and connected with fibreglass by pressing. Dyes are added into the surface layer and the surface layer is moulded in the process of pressing; in the process of mixing heat-insulating materials and fire-resistant materials, and materials with magnetic properties are added into the filling agent. Pressing is performed to obtain a curvilinear profile.
EFFECT: invention makes it possible to produce the glass-magnesite product of a curvilinear profile with colourful coating and/or moulded coating.
FIELD: process engineering.
SUBSTANCE: invention relates to construction materials. Proposed board comprises inner layer of hardened gypsum with top and bottom surface that feature a definite density. Note here that inner layer of hardened gypsum abuts on top binding layer and bottom binding layer with definite density in dry state. Note also that density of inner layer of hardened gypsum is lower than that in dry state of every top an bottom binding layers. Top and bottom binding layers feature thickness varying from 0.05 mm to 0.18 mm. This board comprises top and bottom wallboards. Note here that top wallboard is secured to top surface of inner layer of hardened gypsum by top binding layer. Note here that bottom wallboard is secured to bottom surface of inner layer of hardened gypsum by bottom binding layer. This board in as-dried state has density of 560 kg/m3 or smaller while inner layer of hardened gypsum had mean hardness of at least 48.9 N defined in compliance with ASTM C473. Invention covers also the versions of board design and method of its production.
EFFECT: higher board hardness and strength of inner layer.
19 cl, 8 tbl, 8 ex
SUBSTANCE: invention relates to construction materials and a gypsum wall board with high content of hydroxyethylated starch and a dispersant. The gypsum board contains a hardening gypsum aggregate which is placed between two cover sheets formed from a suspension which contains water, gypsum plaster, hydroxyethylated starch, gelated starch, the hydroxyethylated starch being present in an amount ranging from 0.5 to about 10 wt % with respect to the mass of gypsum plaster and the gelated starch is present in an amount ranging from 0.5 to about 10 wt %. The suspension can further contain a naphthalene-sulphonate dispersant and sodium trimetaphosphate, or consists of water, gypsum plaster and hydroxyethylated starch.
EFFECT: invention increases fluidity of the gypsum-containing suspension, while maintaining improved strength of the hardened panel.
18 cl, 11 tbl, 6 ex
SUBSTANCE: invention relates to production of structural materials and can be used in production of small-piece coloured facing structural and heat-insulating materials, particularly bricks or blocks. The heat-insulating facing stone has a structural and heat-insulating base layer made from material containing, wt %: portland cement M400DO-M500DO 21-35, claydite gravel 17-64, building sand 0-61, granular polystyrene 1-15 and a front layer made from material containing, wt %: building sand with Mkr. 1.5-3.2 70 - 86, grey portland cement M400DO-M500DO 14-30, pigment for concrete 0-5 of said portland cement, or sand with Mkr. 1.5-3.2 70-86, white portland cement M400DO-M500DO 14-30, pigment for concrete 0-5 of said portland cement, or quartz sand from Zubtsovsky deposit 69-84, white portland cement M400DO-M500DO 16-31, pigment for concrete 0-3 of said portland cement, or quartz crumbs 70-86, white portland cement M400DO-M500DO 14-30, pigment for concrete 0-3 of said portland cement.
EFFECT: wider colour gamma, improved thermal properties, low density.
FIELD: process engineering.
SUBSTANCE: invention relates to gypsum-bearing articles, particularly, to gypsum wall boards with low dusting. Boards feature large volume of pores corresponding to low density. They comprises gypsum core arranged between, in fact, parallel cover sheets. Note here that hardened gypsum core has definite pore distribution by sizes and is made from suspension including water, foam, stucco, pre-gelated starch and naphthalensulfonic dispersing agent.
EFFECT: decreased amount of dust in processing.
33 cl, 10 dwg, 7 tbl, 9 ex
SUBSTANCE: flaky construction board consisting of the main layer (1), which, at least at one flat side has a coating that serves as a bearing layer (4). The bearing layer (4) includes at least three layers, namely, a thin transition layer (5) of a mortar, which is applied on the main layer (1), a layer (6) of a fibre glass cloth and a binding layer (7), made of a non-compressible hardened coating mortar with smoothened surface.
EFFECT: invention makes it possible to increase board strength.
19 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to construction, particularly, to production of multilayer construction articles with heat insulating concrete layer with low heat transfer factor. Proposed method comprises pre-filling of moulds by concrete mixes of heat insulating and structural layers. First 800-1400 kg/m3-density layer laid, jointing layer is added formed by applying artificial sieved gravel sand, 0.5-2 mm-grain size, 5-10 mm-thick, on lower structural layer. Then mould is filled with concrete mix of heat insulating layer with mean density of 200-400 kg/m3. Mould is subjected to vibration for 150-200 s. Now, jointing layer and structural filling jobs are reiterated followed by vibration for 100-150 s.
EFFECT: higher strength of article at boundaries of layers.