Cements and concrete and artificial stone and ceramics and refractories (C04)

C   Chemistry; metallurgy(315514)
C04            Cements; concrete; artificial stone; ceramics; refractories(27297)

Gypsum products with high-efficient heat-absorbing additives // 2628347
FIELD: construction.SUBSTANCE: gypsum article comprises a cured gypsum core layer, at least partially covered with at least one facing sheet, at least one of the liner sheets comprising paper and aluminium trihydrate, the paper being obtained from at least a pulp and aluminium trihydrate, and wherein the aluminium trihydrate is present in an amount of from about 5% to about 40 wt % relative to the pulp in a dry state.EFFECT: increasing the stability of gypsum products to high temperatures.9 cl, 12 dwg, 4 tbl
Raw material mixture for producing construction composite products // 2628116
FIELD: construction.SUBSTANCE: raw material mixture for producing construction composite products as a filler contains mineral raw materials with the specific surface of 500-2500 cm2/g, containing waste products of metallurgical industries, incl. blast-furnace granulated slag, or sea and river vessel cleaning wastes, and as a binder contains a secondary polymeric material consisting of household and industrial wastes of polymeric materials, at the following ratio of ingredients, wt %: secondary polymer material 30.0-45.0; mineral raw materials 55.0-70.0.EFFECT: expansion of raw material base and exclusion of autoclave equipment while manufacturing the products.
ethod for producing activated organomineral powder for bitumen-concrete mixtures // 2627881
FIELD: chemistry.SUBSTANCE: in the method for producing epy activated organomineral powder for bitumen-concrete mixtures, the co-milling of silica gel and ash-and-slag wastes is carried out in the ball mill. The selection from the produced milled material of the working fraction with a size of 0.07-0.31 mm is performed, the said working fraction is loaded into the mixer, in which also the slaked lime is loaded, and intermediate mixing is carried out. Then, a hydrophobic surfactant is loaded into the mixer in amount of 0.3-0.5 wt % of the slaked lime and final mixing is carried out until the homogeneous mixture is produced.EFFECT: increasing the ecological and economic efficiency of producing activated organomineral powder.1 tbl, 3 ex
High-strength fine grain concrete on composite binder basis with application of technogenic raw material // 2627811
FIELD: construction.SUBSTANCE: high-strength fine grain concrete, based on a composite binder, using the technogenic raw materials quartzite sandstone contains the portland cement, an active additive, a filler, an aggregate, a plasticizing additive and water, the alumina cement and microsilica are used as the active additive, the technogenic raw material quartzite sandstoneas is used as the filler, the quartz sand and quartzite sand crushing screening are used as the aggregate, the hyperplasticizer Melflux 2651 F is used as the plasticizing additive and the water with the following ratio of components, %: the portland cement - 21.0-21.7, the alumina cement - 2.0-2.1, the microsilica - 2.0, the technogenic raw material quartzite sand - 1.6-1.9, the quartz sand - 20.5-21.0, the quartzite sandstone crushing screening 46.5-47.0, the hyperplasticizer Melflux 2651 F-0.2, the water - the rest.EFFECT: production of high-strength fine-grained concrete with the portland cement low consumption, low water absorption, while maintaining its high strength and density.1 tbl
ethod of layer electron-beam sintering of products from ceramic powder // 2627796
FIELD: electricity.SUBSTANCE: in the sintering method containing the operations of depositing and aligning the powder layer, as well as electron irradiation of the applied layer, two electron sources are used that form two electron beams with an energy of 10-15 keV, one of which is defocused and irradiates the entire layer of powder, and the second beam is focused and scans the sintered area of the powder layer. Irradiation is performed in the range of inert gas pressure of 5-20 Pa. In the method, the preheating stage of the powder layer is eliminated, since a pressure range of 5-20 Pa ensures the formation of a beam plasma through which the electric charge brought by the electron beam flows from the powder particles to the grounded walls of the vacuum chamber. The uniformity of heating is achieved by continuous irradiation of the entire powder layer with a defocused electron beam, which ensures that the temperature is not sufficient for sintering. The addition of the power of the scanning focused beam ensures sintering according to the given pattern.EFFECT: reduction of the time spent on layer-by-layer electron-beam sintering of ceramic powder products while ensuring uniform heating of each layer of ceramic powder.1 dwg, 1 ex
Insulating mineral foam material // 2627780
FIELD: construction.SUBSTANCE: method for producing mineral foam material includes the stages of: separately producing one or more cement slurries and the aqueous solution of a foaming agent, wherein the median diameter (D50) of the bubbles is less than or equal to 400 mcm; homogenizing this or these cement slurries and the aqueous solution of the foaming agent to obtain a foamed cement slurry; pouring the foamed cement slurry and holding it for hardening. The mineral foam material obtained by the above method.EFFECT: obtaining mineral foam material with high resistance to settling after casting, with the increased compressive strength at low density and thermal conductivity.17 cl, 19 tbl

Construction brick containing porous material, microstructure of which is adjusted by adding nucleating substance in process of its manufacturing method // 2627775
FIELD: construction.SUBSTANCE: construction brick with the cellular structure comprising a porous material obtained by the method comprising the following stages: the stage a) of quicklime synthesis, the stage b) of mixing said quicklime, water and silica, the stage c) of introducing the nucleating substance; the stage d) of hydrothermal synthesis to obtain the ceramic mass, and the stage e) of drying said ceramic mass obtained at the stage d).EFFECT: increasing the insulating properties.6 cl, 5 dwg, 5 tbl
Composition of the catalyst, which is intended for use with compositions of pulsocolans // 2627772
FIELD: chemistry.SUBSTANCE: preparation of a cement fortification composition comprising a combination of sodium chloride, potassium chloride, ammonium chloride, magnesium chloride, calcium chloride, aluminium chloride, silica, magnesium oxide, magnesium hydrogosphate, magnesium sulfate, sodium carbonate and cement, by combining first ammonium chloride, chloride aluminium and magnesium oxide to form a catalyst composition and then add the remaining components. The construction composition comprises: i) an ash in an amount of 90.0-99.9 wt % of the total weight of the construction composition, the ash being fly ash or an ash residue; ii) a catalyst composition in an amount of 0.1-10.0 wt %, consisting of: a) one or more chlorides selected from the group consisting of sodium chloride, potassium chloride, magnesium chloride, calcium chloride, strontium chloride, barium chloride And ammonium chloride; b) aluminium chloride; And c) one or more metal oxides selected from the group consisting of metal oxides of Group II of the Periodic Table, metal oxides of Group VIII B of the Periodic Table; And iii) a cement in an amount of 0.0-5.0 wt % of the total weight of the construction composition.EFFECT: obtaining a composition for hardening cement having an increased reactivity.2 cl
Ceramic corundum-based material and method of its production // 2627522
FIELD: chemistry.SUBSTANCE: high hardness is achieved by modifying the grain boundaries of corundum with carbon. All carbon is distributed along grain boundaries. The synthesis method includes coating corundum grains with single fullerene layers by treating corundum and fullerene in a planetary mill. The resulting modified nanopowder of corundum with an average particle size of 30 nm is either compacted by uniaxial two-sided pressing and sintered at 1600-1800°C, or it is hot pressed at the pressure of 0.5-2 GPa at the temperature of 1600-1800°C.EFFECT: developing a ceramic corundum-based material with a high hardness exceeding the hardness of monocrystalline corundum.2 cl, 5 dwg, 6 ex
Ceramic mass // 2627515
FIELD: chemistry.SUBSTANCE: ceramic mass comprises, wt %: refractory clay 62.5-72.0; expanded perlite 11.0-15.0; bentonite 11.0-15.0; chamotte 5.0-7.0; microsilica 0.5-1.0.EFFECT: increased tile frost resistance.1 tbl
ixture for producing refractory material // 2627514
FIELD: chemistry.SUBSTANCE: burden for producing refractory material comprises the following, wt %: aluminium oxide 55.0-59.0; mullite 15.0-20.0; boron nitride 15.0-18.0; kaolin 8.0-10.0.EFFECT: increased strength of products.1 tbl
Burden for producing aggregate // 2627510
FIELD: chemistry.SUBSTANCE: burden for producing aggregate comprises, wt %: montmorillonite clay 97.8-98.4, monocalcium phosphate 0.2-0.4, ground and sieved through a sieve 0.14 wollastonite 1.0-1.6, ground and sieved through a sieve of 0.14 shungite 0.2-0.4.EFFECT: high strength of aggregate produced from the burden.1 tbl
ethod of producing silicon carbide // 2627428
FIELD: chemistry.SUBSTANCE: method includes dosing of silica-containing materials and carbonaceous reductants, loading them into an electric resistance furnace and conducting smelting reduction. First, around the core, a charge layer is loaded, containing quartzite with a fraction of 6-10 mm, then the following layer is loaded with a charge containing quartz sand and/or quartzite with a fraction of 0.3-6.0 mm, after which a charge layer containing quartz sand with a fraction less than that of the furnace is loaded into the upper part of the furnace and to the periphery 0.3 mm, and finely divided silica fraction 0.22 mm, with the following ratio of components of silica-containing raw materials, wt %: quartzite with a fraction of 6.0-10 mm - 20-30, quartz sand (quartzite) with a fraction of 0.3-6.0 mm - 50-70, quartz sand fraction less 0.3 mm - 5-8, finely divided silica fraction 0.22 mm - 5-15. Quartz sand fraction in amount of less than 0.3 mm and fine-grained silica before loading of the charge can be premixed with quartz sand with a fraction of 0.3-6 mm.EFFECT: increasing the productivity of the process when using cheap silica-containing materials.2 cl, 9 ex
Concrete mixture // 2627344
FIELD: chemistry.SUBSTANCE: concrete mix includes portland cement, aggregate, microsilica and water. The mixture contains highly active metakaolin, "Linamix PK" is taken as a superplasticiser with the following component ratio, wt %: portland cement - 19-20; medium natural sand - 67-68; microsilica - 0.8-1.81; highly active metakaolin - 0.5-1.08; superplasticizer "Linamix PC" - 0.1-0.2; water - the rest.EFFECT: decreased content of calcium hydroxide in the composition, leading to a reduction in corrosion of type I and II, and increased strength due to the introduction of pozzolanic additives and superplasticiser to the concrete mixture.2 tbl
Raw mixture for construction materials // 2627335
FIELD: construction.SUBSTANCE: raw materials for construction materials includes a cement, a filler, an aggregate and mixing water, containing the superplasticizer and the composite carbon nanomaterial, that is the agglomerates (from three up to three hundred) of carbon nanoscale quasi-one-dimensional filamentary formations of cylindrical shape polycrystalline graphite with internal channel mainly of two sizes 49.3±0.45 nm and 72.0±0.45 nm; with two types of fulleroid nanoparticles, localized on the surface of the filaments: a) polyhedral carbon nanoparticles with the closed internal channel of 1-5 nm in diameter; B) clusters of C60 and the active loose carbon with globes sizes of 1-5 mcm in the concentration of 10-9-10-6 wt %.EFFECT: increase of the concrete consistency, provision of high homogeneity and annual occurrence frequency of the consistency factor, strength, frost resistance and waterproofness of the resulting material.4 tbl, 2 dwg
Restoration dry mixture // 2627333
FIELD: construction.SUBSTANCE: restoration dry mixture comprising a lime binder, quartz sand of the fraction 0.1-2.5 mmas a filler, dry plasticiser C-3 as a plasticizing additive, potato starch as a water-retaining additive, metakaolin as an active mineral additive, Ufapore TLA porogen as an air-entraining additive, the polypropylene fiber with the length 6 mm as a fiber, at the following ratio of components, wt %: lime binder 16-20, quartz sand of the fraction 0.1-2.5 mm 75.55-81.78, dry plasticiser C-3 0.1-0.2, potato starch 0.1-0.2, metakaolin 2-4, Ufapore TLA porogen 0.01-0.02, polypropylene fiber with the length 6 mm 0.01-0.03, where the lime binder was obtained by means of co-grinding powdered lime and dolomite flour in a disintegrator at the ratio 1:1 to the particle size of 10-30 mcm. The invention is developed in the dependent claim of the formula.EFFECT: improvement of technology for obtaining the lime binder due to reducing the hydrated lime consumption with simultaneously increasing the yield of the lime paste; increasing the preservation time of the initial mobility of the lime paste; absence of signs of the binder volume change unevenness during hardening.2 cl, 3 tbl
Nanocrystalline cellulose (ncc) in band seal compositions (sk) // 2627057
FIELD: chemistry.SUBSTANCE: seam composition for the seams of adjacent wall slabs includes nanocrystalline cellulose, water, filler, binder and thickener, the content of nanocrystalline cellulose sufficient to improve the resistance to cracking of the suture composition upon drying, the diameter of the nanocrystalline cellulose is less than 60 nm, the content of nanocrystalline cellulose is from 0.05 to 0.15 wt %, based on the total weight of the composition, and the thickener content is from 0.3 to 0.5 wt %, based on the total weight of the composition. The invention is developed in subclaims.EFFECT: elimination of the formation of cracks in different thicknesses of the material.14 cl, 1 ex, 4 dwg
Production method of articles from high-tensile ceramics // 2626866
FIELD: metallurgy.SUBSTANCE: production method of the high-tensile ceramics involves the plasma-chemical powder preparation from the tetragonal zirconium oxide and aluminium oxide, its mixing with the organic binder (plasticiser), moulding, removing the binder in the backfill and calcining. The moulding slip is prepared from the mixture of plasma-chemical ultradisperse powder, containing 75-82 wt % of zirconium oxide, 15-20 wt % of aluminium oxide, 3-5 wt % of lithium oxide, including the plasticiser in the amount of 25-60 wt % of the mixture mass. The slip is moulded in the die mould, heated up to 60-85°C, into the blank under the pressure of 0.3-0.6 MPa, are calcinated in the backfill to remove the plasticiser, then the moulded blank is sintered at the temperature 1690-1800°C.EFFECT: ceramic products with the claimed composition and the specified sintering parameters have the bending strength of at least 1215 MPa, the produced ceramic blanks are characterized by the high impact strength, heat resistance and heat stability.1 tbl
Raw mix for producing silicate bricks // 2626847
FIELD: construction.SUBSTANCE: raw mix for producing silicate bricks, including lime and water, additionally contains sulfite-cellulose bard - SCB and burnt earth - waste foundry, incurred to co-grinding with lime to a specific surface of 2500-3000 g/cm2, with the following ratio of components, wt %: burnt earth 92-94, lime 6-8, SCB 0.1-0.3 from the mass of lime over 100, water - up to 5-7% moisture of the press powder.EFFECT: increasing the strength of silicate brick, reducing the cost of its production, expanding the raw base, recycling the waste of the foundry.2 tbl
ethod for production of silicon-containing biomimetic calcium-phosphate coating on titanium alloys from human interstitial fluid model solutions // 2626604
FIELD: pharmacology.SUBSTANCE: method for production of a biomimetic silicon-containing calcium-phosphate coating on titanium alloys from a human intercellular fluid model solution is described, in which a solution of the following composition is preliminarily prepared: CaCl2 - 3.7424 g, MgCl2 - 0.6092 g, K2HPO4 - 2.8716 g, NaHCO3 - 4.5360 g, Na2SO4 - 0.0144 g, NaCl- 8.8784 g, Na2SiO3 - 0.0488÷0.2444 g, the resulting solution is precipitated at: temperature T1=20÷25°C, pH value of 7.40±0.05 for 48 hours, then the precipitate is washed, filtered, dried at temperature T2=80÷85°C for 5 hours, an aqueous suspension is prepared from the resulting silicon-containing calcium-phosphate powder at concentration C=1÷5 wt %, the suspension is applied on the titanium alloy by a capillary method, dried at temperature T3=20÷25°C for 1 hour, then the said alloy is placed into the preliminarily obtained model solution of human intercellular liquid for 3 days, then it is removed from the solution and dried at temperature of T4=20÷25°C for 24 hours.EFFECT: production of silicon-substituted hydroxyapatite, while silicon plays an important role in the physiological processes of bone and cartilaginous tissue growth and restructuring.3 dwg, 1 tbl
Carbon-silicon carbide composite material based on multidirectional reinforced bar framework // 2626501
FIELD: chemistry.SUBSTANCE: carbon-silicon carbide composite material has a volume-reinforced structure based on multidirectional bar frameworks (n = 3, 4 …, where n is the number of reinforcement directions) of carbon fiber and a complex carbon-silicon carbide matrix obtained from hydrocarbons during their carbonization at atmospheric pressure or isostatically under pressure, saturation of the preforms with pyrolytic carbon, high-temperature treatment, pre-silicide and subsequent re-siliconization after machining. The siliconization (preliminary and repeated) of the carbon-carbon preform can be carried out by any known method, including a mixture of silicon and boron or a mixture of silicon with other refractory components, or silicon-based compounds, with a silicate preform density ranging of 1.60 to 1.95 g/cm3 depending on the end use of the material.EFFECT: material has high thermo-erosive and oxidative stability, and sufficient physical and mechanical characteristics that increase with increasing temperature.2 cl, 8 ex, 2 tbl, 2 dwg

Building composition and complex additive for building composition // 2626493
FIELD: chemistry.SUBSTANCE: complex additive for building composition including, wt %: cement 80-85, superplasticizer C-3 2.0-3.5, microsilica 10-12, natural or synthetic zeolite - the rest, contains zeolite modified with carbon nanotubes, in an amount of 5-10 wt %. A building composition comprising, wt %: a mineral binder 15-25, water 8.5-10, a filler - the rest and a powdery complex additive according to clause 1, the content of the complex additive is 0.15-0.8 wt % of the mineral binder.EFFECT: reducing cement consumption by increasing the activity of the additive while maintaining the strength characteristics of the concrete.2 cl, 4 dwg
Composition for producing heat-resistant composites // 2626488
FIELD: construction.SUBSTANCE: method is carried out by adding microsilica from the production of ferrosilicon to the composition at the following component ratio, wt %: spent catalyst IM-2201 10-15; crushed stone with the fraction of 5-10 mm 33-40; H3PO4 10-15; aluminium-chromium waste of aluminium alloys etching 24-30; microsilica from the production of ferrosilicon 10-13.EFFECT: increased mechanical strength and thermal resistance of heat-resistant composite, industrial waste utilization, environmental protection, expansed raw material base for building materials.3 tbl

Charge for manufacturing heat-insulating refractory concrete // 2626480
FIELD: construction.SUBSTANCE: charge for the production of heat-insulating refractory concrete, containing diatomite, ground to a specific surface of at least 3000 cm2/W, wollastonite concentrate in the form of monofraction with a needle length of 80 mcm, wherein the mixture of wollastonite (crystalline structure and amorphous form) and diatomite is in a ratio of 50:50, contains nepheline sludge with moisture content of 15-20%, and said diatomite and concentrate in the ratio of 1:1 at the following ratio of components, wt %: said diatomite 26-35, said wollastonite concentrate 26-35, said nepheline sludge (in terms of SiO2) the rest.EFFECT: increasing heat-insulating properties with improvement of production ecology.1 ex, 2 tbl, 1 dwg
Amber cleaning method // 2626468
FIELD: chemistry.SUBSTANCE: invention can be used, in particular, for cleaning and removing the oxidized crust from the surface of amber raw materials.EFFECT: improving the quality of cleaning amber raw materials, minimizing the loss of valuable raw materials during cleaning, the ability to clean amber fines and amber irregular shapes with a lot of depressions and bulges, retaining the original shape of the amber, accelerating the cleaning process while simplifying the technological process of cleaning the amber, reducing energy consumption, using only harmless non-toxic solutions to remove the oxidized crust.5 ex
Polymer binding for manufacturing polymer concrete // 2626357
FIELD: construction.SUBSTANCE: invention relates to the production of polymer binders for manufacturing polymer concretes intended for protecting reinforced concrete surfaces operating under conditions of variable humidity, ultraviolet radiation and salt fog, characteristic of the climate of the sea coast. The polymer binder includes ED-20 epoxy resin, an aminophenol hardener - the reaction product of phenol, formaldehyde and ethylenediamine - of the brand AF-2, and contains as additives a carbamide resin of the brand PKP-52 and dioxyphenol, and as a filler - glass powder of the brand TF-110.EFFECT: increasing the rate of biological stability and heat resistance.3 tbl
ethod for manufacturing variatropic cellular concrete // 2626092
FIELD: construction.SUBSTANCE: method for manufacturing variational cellular concrete includes pre-treatment of a binder, a fine aggregate, and mixing water separately with low-temperature nonequilibrium plasma for 1⋅10-2 up to 5⋅10-2 s, mixing the components to obtain a homogeneous aerated concrete mixture, pouring it into a perforated mould, the inner surface of which is preliminarily covered with glass, carbon or basalt fiber, closing the mould with a cover and fixing it, hardening and stripping.EFFECT: increasing the coefficient of structural quality of products based on variatoric cellular concrete with the reinforced surface, simplifying the technology of its production.3 ex, 1 tbl
Raw material mixture for sulfur concrete and method of its preparing // 2626083
FIELD: construction.SUBSTANCE: method of preparing the mixture for sulfuric concrete involves mixing modified sulfur with a mineral filler heated to 150-155°C; the mineral filler includes pit sand with the grain size up to 5 mm and quarry crushed stone with the grain size from 5 to 40 mm; the hot mixture is discharged into moulds, cooled; at the temperature of about 40°C, the samples are removed from the mould, cooled to room temperature, at the following ratio of the stirred modified sulfur, pit sand and quarry crushed stone, weight parts: 1:(2.3÷4.2):(2.5÷4.5), respectively. The raw material mixture for the sulfur concrete includes crushed stone and sand. For preparation of the said mixture, crushed stone with the grain size of 5 to 40 mm, pit sand with grain size up to 5 mm, and modified sulfur are used at the following ratio, weight parts: pit sand 2.3-4.2, quarry crushed stone 2.5-4.5, modified sulfur 1, the raw material mixture for the sulfur concrete being obtained by the above method.EFFECT: increasing the composition strength, corrosion resistance to aggressive media and to dynamic loads, reducing the water absorption, increasing the frost resistance.2 cl, 2 tbl
ethod for silicon carbide ceramic material production // 2625845
FIELD: chemistry.SUBSTANCE: implementation of the method for silicon carbide ceramic material production, comprises batch preparation from a mixture of silicon carbide micropowders and sintering activator oxides, moulding of the material preform, preform drying and subsequent sintering, the micropowders mixture is obtained by grinding of a silicon carbide particles and activator oxides mixture with particles larger than 5 microns on a rotary abrading mill where grinding inserts and working chamber lining are made from a ceramic composite material comprising vol. %: diamond - 20-75, silicon carbide - 20-75, silica - 3-40.EFFECT: increased grinding efficiencyand increased chemical purity of the obtained ceramic material.2 cl
Concrete mixture // 2625844
FIELD: construction.SUBSTANCE: concrete mixture contains cement, aggregate, plasticiser, hydrophobizing liquid HPL-94 and water, while the sodium laureth sulfate surfactant (SLES) is used as the plasticiser, and the aggregate consists of a mixture of ground ceramic bricks with particle size up to 5 mm and river sand with a grain size of 1.3, taken in the ratio of 3:1, with the following ratio of components, wt parts: cement 1, aggregate 2, plasticiser-surfactant sodium laureth sulfate (SLES) 0.012-0.016, hydrophobizing liquid HPL-94 0.001, water 0.58-0.68.EFFECT: increasing the viability of the concrete mixture, increasing the strength of concrete at the 28-day age, and in the early periods of hardening.2 tbl
Concrete mixture // 2625842
FIELD: construction.SUBSTANCE: concrete mixture contains portland cement, filler, water and compound additive comprising cement hardening retarder and accelerator of hardening molasses, with a placeholder used with the size of fractions 0-5 mm, 5-20 mm and 20-40 mm in the ratio 1:0.5:0.8, the next component ratio, wt %: Portland - 13.2-15.7; water - 7.6-9.1; complex additive - 0.795-1.092; -the rest is filler, and complex additive additionally contains a surfactant sodium laureth sulfate (SLES) as a curing accelerator use ferrous sulfate (FeSO4 7H2O), following the ratio of the wt %: hardening retarder molasses 0.4-0.6; curing accelerator ferrous sulfate (FeSO4 7H2O⋅) 0.385-0.476; surfactant sodium laureth sulfate (SLES) 0.01-0.016.EFFECT: increasing the durability of concrete mixture in 7 days of age with the improvement of technical parameters, in particular the deposits of a cone.1 tbl
ixture for foamed glass production // 2625828
FIELD: chemistry.SUBSTANCE: foam glass material including sodium oxide hydrate, carbon, perlite, characterized by further content of sheet glass and/or container glass with the following ratio of components milled to a residue of not more than 10% on a sieve No. 008, wt %: sodium oxide hydrate 6.0-8.5; carbon 0.005-0.01; sheet glass and/or container glass 40.0-50.0; perlite - the rest.EFFECT: decreased temperature of foam glass synthesis.1 tbl
Ceramic mixture for facing tile manufacture // 2625824
FIELD: chemistry.SUBSTANCE: ceramic mass for facing tiles manufacture includes, wt %: brick clay 54.4-60.4, tile grit ground to pass through a 0.14 mesh 0.1-0.5, nepheline concentrate ground to passi through a 0.14 mesh 11.0-13.0, tripoli ground to pass through a 0.14 mesh 28.0-32.0, melted natural asphalt 0.1-0.5.EFFECT: low firing temperature of the facing tile made from the ceramic mass.1 tbl
Redispersible dry composition of polymer coatings or other products for construction // 2625667
FIELD: chemistry.SUBSTANCE: redispersible dry composition of the polymer topcoat include: the powdered organic binder comprising a polymer obtained by spray drying or lyophilization dispersion containing the polymer and a protective colloid; deprotecting agent selected from agents that are effective without increasing the pH of the dispersion obtained by mixing said composition with water to a value of 10 or more; absorptive filler.EFFECT: no tendency to the appearance of efflorescence on the surface of the coating is not strongly alkaline pH after dispersing the dry formulation in water, easy reproducibility, protective properties of coatings and waterproofing.12 cl, 18 ex
Refractory concrete mixture for hearth lining of thermal units // 2625580
FIELD: metallurgy.SUBSTANCE: refractory concrete mixture contains high alumina calcium aluminate cement containing not less than 70% of Al2O3, corundum with an aluminium oxide content of 98.4% with a 2-7 mm fraction and a fraction of less than 0.05 mm, as well as synthetic molten aluminium chromium spinel with Cr2O3 - 15-25 and Al2O3 - 75-85 fractions of 0.5-1.5 mm at the following ratio of components, wt %: corundum with the fraction of 2-7 mm 40, corundum with the fraction of less than 0.05 mm 20, high-alumina calcium aluminate cement 10, synthetic molten aluminium chromium spinel 30.EFFECT: increased strength of products and improved resistance to iron scale.1 cl
ethod of drying ceramic products // 2625579
FIELD: heating system.SUBSTANCE: method of drying ceramic products is proposed, including covering the product with a cover, supplying the coolant to the inside of the product, drying at a temperature of 60-80°C for 4-10 hours, removing the cover and drying without the cover for 2-4 hours. Before the coolant is supplied to the inside of the product, the product covered with the cover is kept at room temperature for 3-7 hours.EFFECT: reducing the level of technological rejection that occurs, when firing products that have undergone a drying operation.1 tbl
ethod of manufacturing non-fire tar-periclase refractory products // 2625578
FIELD: metallurgy.SUBSTANCE: method includes mixing the periclase-containing powders, filling the moulding mixture into a mould and sealing with vibrocompression. Before mixing, the powders are preheated to a temperature of 70-100°C, the mixing is carried out at a temperature of 90-100°C, during which a binder is introduced in the form of coal tar, heated to a temperature of 110-120°C, and the compaction by vibration-pressing is performed at a pressure of 1.8-2.5 MPa, vibration with a frequency of 3000-6000 rpm and an amplitude of 1.0-2.0 mm.EFFECT: manufacturing non-fire, tar-periclase refractory products with specified mechanical characteristics.1 tbl, 5 ex
Extra-strong fine grain concrete on basis of composition bonding substance with use of man-triggered raw material // 2625410
FIELD: construction.SUBSTANCE: extra-strong fine grain concrete on the basis of composition bonding substance with use of man-triggered grog refractory material contains portland cement, active additive, filler, aggregate, plasticizing additive and water; as an active additive, alumina cement and microsilica are used; as a filler grog refractory technogenic material with a specific surface of 450-500 m2/kg is used; as a filler fraction glass sand of 0.63-1.25 mm and the fraction quartzitic sandstone crushing out screening of1.25 mm is used; as a plasticizing agent hyperplasticizer Melflux 2651 F and water is used with the following ratio of components, wt %: portland cement - 20.0-21.0, alumina cement - 2.0-2.1, microsilica - 2.0, grog refractory technogenic material - 0.7-1.7, quartzitic sandstone - 20.5-21.5, screening of quartzite sandstone crushing out - 46.5-47.5, hyperplasticizer Melflux 2651 F- 0.2, water is the rest.EFFECT: invention makes it possible to produce extra-strong fine grain concrete with use of man-triggered grog refractory material as a filler, which has a low consumption of portland cement in the composition of the raw mix, low water absorption, while maintaining its high strength and density.1 tbl

Use of methylhydroxyethylcellulose as additive to cement // 2625408
FIELD: construction.SUBSTANCE: invention relates to the method for cementing a pipe or a shell in a gas well, which includes: (a) introducing into the wellbore cementing grout comprising water, cement and methylhydroxyethylcellulose (MHEC), wherein the MHEC amount is in the range of 0.05 to 1.50 percent by weight of cement, the grout density being in the range of 0.72 g/cm3 (6.0 ppg) to 1.74 g/cm3 (14.5 ppg), and (b) allowing the grout to solidify into a solid mass. Invention is developed in the dependent claims of the invention formula.EFFECT: preventing slippage or migration of gas into the wellbore and improving the cementing grout stability.17 cl, 17 ex, 4 tbl, 2 dwg
ethod of producing fillers for building materials // 2625388
FIELD: chemistry.SUBSTANCE: aluminium salt in the amount of 40 to 100 g/l is dissolved in a boiling aqueous solution of 10-50 wt % of carbohydrate, a disintegrant is added in the form of aluminium nitrate solution of 5-50 wt % with an aluminium content of up to 70-350 g/l, then the solution is evaporated to a brown mass of viscous consistency, the resulting mass is placed in a crucible and heated in a muffle furnace in air at a temperature of 250-400°C until the loss of mass ceases, after which the temperature is raised to 800-1200°C, and calcined until the carbohydrate burns out completely. Oxychloride, acetate and aluminium sulphate can be used as an aluminium salt, and cane sugar - as a carbohydrate.EFFECT: preparing a filler for building materials in the form of aluminium oxide powder having a low bulk density, low thermal conductivity and high porosity.3 cl, 3 ex, 3 dwg
ethod for producing cold asphalt-concrete mixture from screenings of granite gravel crushing // 2625353
FIELD: construction.SUBSTANCE: in method for producing cold asphalt mixture from the screenings of granite gravel crushing, which includes applying asphalt-binder coatings made of mineral powder and modified bitumen to the heated gravel particles by pelletizing; before granulation, the screenings of granite gravel crushing are divided into two fractions with the particle sizes of 2-5 mm and the fraction with finer particles, with the subsequent granulating of the 2-5 mm fraction particles by applying asphalt-binder coatings containing the following percentages by weight of said fraction: mineral powder - 15-20, bitumen BND 60/90, modified by 15% by bitumen weight with spent engine oil - 2-3; cooling the obtained granules, mixing them with the particles of a finer fraction at a ratio 3:1 of mass fractions with further stirring the mixture obtained in the cold state with adding 2% by weight of bitumen emulsion mixture.EFFECT: increasing strength and durability, preventing shrinkage, increasing the shelf life of the material without loss of performance properties, reducing the tendency to caking.1 ex, 2 tbl
Ceramic mass // 2625136
FIELD: chemistry.SUBSTANCE: ceramic mass includes, wt %: clay red-burning 81.5-85.5; kaolin 0.2-0.3; a ceramic skull of 0.2-0.3; sand quartz 12.0-16.0; glycerin 0.5-1.5; paraffin 0.5-1.5.EFFECT: reducing the firing temperature of the products.1 tbl
Composition for heat-resistant foam material // 2625115
FIELD: chemistry.SUBSTANCE: composition for a heat-resistant foam material is described, comprising a silicon-containing binder, hollow ceramic microspheres (cenospheres), and a fibrous filler, in which in order to increase the mechanical strength and heat resistance of the foam, as a silicone-containing binder the composition contains, wt %: 10% polycarbosilane solution in xylene, as hollow ceramic microspheres - cenospheres produced by flotation treatment of smoke emissions from a solid-fuel thermal power plant, the composition of which contains SiO2, Al2O3, CaO, MgO, Na2O, Fe2O3, as a fibrous filler - quartz fibers with the following ratio of the composition components, wt %: the said silicon-containing binder 13.0-76.9, hollow ceramic microspheres (cenospheres) 21.0-66.2, quartz fibers 2.1-20.8.EFFECT: foam material is produced with increased heat resistance and strength.1 tbl
ethod for obtaining a submicron powder of alpha-oxide of aluminium // 2625104
FIELD: chemistry.SUBSTANCE: way of obtaining a submicron powder of alpha-aluminium oxide involves processing of aluminium hydroxide derived way Bayer in the mill with zatravochnymi particles, drying, calcination and disaggregation of the received powder by grinding in an organic solvent. As a dose, the alpha alumina nanopowder with particle sizes less than 25 nm in the amount of 1-5 masses % is used. The mixture of aluminium hydroxide with seed is treated by the dry grinding method in a ball mill with the addition of 20-30 wt % of hexane. Then, drying is carried out in air and calcination at 900-950°C in the airflow. Forced air flow over the calcined material has a temperature in the range of 500-950°C. Rate of temperature rise at calcination 300°C/hour.EFFECT: invention makes it possible to obtain a powder consisting of alpha-alumina particles of spherical shape, weakly aggregated, with a narrow particle size distribution, suitable for obtaining a dense aluminium oxide ceramic with a reduction in energy costs.3 cl, 1 dwg, 5 ex
ixture for autoclave foamed concrete // 2625063
FIELD: construction.SUBSTANCE: mixture for autoclave foamed concrete includes, by mass %: portland cement 17.00-19.38, quick ground lime 6.9-7.18, sand in the form of sand sludge with density of about 1.6 kg/l, obtained by wet grinding up to a specific surface of particles of 280-300 m2/kg, 26.8-27.72, foaming agent on protein basis 0.23-0.24, waste-cutting, formed during the cutting of foam to blocks in the form of sludge with density of about 1.3 kg/l, 16.62-17.25, muscovite, grinded with wet grinding, 1.75-2.00, sodium sulfate decahydrate 0.52-0.60, water 27.80-28.01.EFFECT: increasing tensile strength during bending and decreasing sorbent moisture of foamed concrete products.1 tbl, 1 ex
Facade decorative composite material // 2625059
FIELD: construction.SUBSTANCE: coating composite material includes, wt %: magnesia binding material, obtained by calcining dolomite waste and its subsequent grinding, 48.5-57.5; preservative - methacid 5.9-7.9; thickener - glue on an organic basis 13.5-17.5; distributor of the modifying additive - polycarboxylate superplasticizer 0,6-0,7; multi-walled carbon nanotubes MWNTs, surface-modified by photocatalytically acting nanoparticles in the form of titanium, zinc, iron, manganese, molybdenum, chromium or tungsten compounds separately deposited on the MWNT surface, 0.05-0.8, depending on the operating conditions of the coating material; water is the rest.EFFECT: high mechanical strength, wear resistance, adhesion to the concealed surfaces of facade decoration composite material, self-cleaning, long time of use without renovation.1 dwg, 3 tbl
ixture for autoclave foam concrete // 2624942
FIELD: construction.SUBSTANCE: mixture for autoclave foam concrete, including portland cement, quicklime lime, sand in the form of sand slurry with a density of about 1.6 g/l, obtained by wet grinding to a specific surface of particles of 280-300 m2/kg, foam-based protein-based additive, water and waste-condensate, formed during the autoclave processing of the cut foam concrete massif, additionally contains muscovite, co-grinded with sand wet grinding, ferrous sulfate, at the following ratio of components, wt %: Portland cement 17.00-19.38, mentioned muscovite 1.75-1.95, ferrous sulfate 0.52-0.59, mentioned lime 6.9-7.18, mentioned sand 43.42-45.03, mentioned foaming agent 0.23-0.24, water 19.46-19.61, mentioned waste-condensate 8.34-8.40.EFFECT: increase in the coefficient of vapor permeability and decrease in the coefficient of thermal conductivity of finished products.1 tbl, 1 ex

acromonomer for obtaining additives for cement, method of its production, additive to cement, including polycarboxyl copolymer obtained from macromonomer and layered double hydroxide, and a method of obtaining additives to cement // 2624818
FIELD: chemistry.SUBSTANCE: invention relates to the macromonomer of Formula 1, where the values for the R1, R2, m, n, are given in the claims that are used to prepare the cement additive. Also a process of preparing the macromonomer cement additive comprising a copolymer of a polycarboxylic acid derived from the macromonomer and the layered double hydroxide and a method for its preparation is disclosed. The copolymer based on the polycarboxylic acid comprises (a) a structural unit derived from the macromonomer compound represented by the formula 1 below and (b) a structural unit derived from the acrylic monomer represented by the formula 4 wherein the values for the R3, M1 are given in the claims. Formula 1: CH2=CR1-(CH2)m-O-(CH2CH2O)n-OCO-R2-COOH, Formula 4: CH2=CR3-CO-M1.EFFECT: cement admixture has excellent dispersibility, workability and corrosion resistance.25 cl, 4 dwg, 7 tbl, 14 ex
ixture for producing refractory material // 2624745
FIELD: chemistry.SUBSTANCE: mixture for producing refractory material includes the following components, wt %: liquid glass 9.2-9.8; sodium fluorosilicate 1.0-1.2; quartzite 29.0-32.0; iron scale of 1.0-1.5; borax of 1.0-1.5; dinas - the rest.EFFECT: increasing the heat resistance of the refractory material.1 tbl
Raw material mixture for manufacturing silicate bricks // 2624741
FIELD: construction.SUBSTANCE: raw material mixture for manufacturing silicate bricks comprises, wt %: quicklime 8.0-9.0; calcite-wollastonite ore crushed to passing through the mesh No. 0.63 8.0-9.0; obsidian crushed to passing through the mesh No. 0.63 4.0-6.0; quartz sand 77.0-79.0.EFFECT: increased strength.1 tbl
 
2551043.
Up!