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

C   Chemistry; metallurgy(312744)
C04            Cements; concrete; artificial stone; ceramics; refractories(26956)
Ceramic mass // 2614341
FIELD: construction.SUBSTANCE: ceramic mass includes loam, expanded clay, an iron-containing additive and a burnable additive. As the iron-containing additive, a grounded ammonia production waste - a spent catalyst - is taken, and as a burnable additive - a liquid expanded polystyrene production waste (mother liquor), with the following ratio of the ceramic mass, wt %: loam 69.35-70.5 ; expanded clay 23-23.5; an iron-containing waste - ground spent ammonia production catalyst - to a specific surface area of 200 m2/kg 1.25-1.5; a liquid expanded polystyrene production waste with the density of 1.014 g/l 4.5-6.4.EFFECT: increasing the product strength after drying, burning, reducing heat and power costs due to reducing the burning temperature, preserving the architectural appearance of products.5 ex, 2 tbl
Complex organic-mineral additive for concrete // 2614340
FIELD: construction.SUBSTANCE: complex organic-mineral additive for concrete, including a superplasticizer of multifunctional action on the basis of sodium salts of polymethylenenaphthalenesulfonic acid "PFM-NLK", additionally comprises: soda-alcaline melting - a caprolactam production waste, fine brown coal - an associated waste generated on wagons bottom during transportation or in warehouses basements with the following ratio, wt %: superplasticizer - 20.15-20.7; soda-alcaline melting - 51.7-53.11; brown coal - 26.74-27.6.EFFECT: reduction of material and heat power costs, shortening the time of the concrete mix setting end without reducing the concrete workability and durability effect.4 tbl
Composition for manufacture of expanded aggregate // 2614339
FIELD: chemistry.SUBSTANCE: invention relates to production of construction materials, specifically to production of water glass-based expanded aggregates, intended for manufacture of lightweight concrete, and fill insulation materials. Composition for manufacture of the expanded aggregate comprises as follows, wt %: sodium water glass with a density of 1.41 g/cm3 50-75, sodium chloride, ground to a particle size below 0.3 mm 1-3, burnt rock, ground to a particle size below 0.14 mm 12-34, drill cuttings, ground to a particle size below 0.14 mm, and oxides, wt %: SiO2 - 26.2; Al2O3 - 4.5; Fe2O3 - 5.6; CaO - 28.3; MgO - 1.2; R2O - 0.8; ignition loss - 33.4, 10-15.EFFECT: composition for manufacture of expanded aggregates, with improved compression strength and softening temperature, industrial waste recycling.3 tbl
ethod for liquid-phase synthesis of multi-component ceramic material in zro2-y2o3-gd2o3-mgo system for production of electrolyte for solid oxide fuel cell // 2614322
FIELD: chemistry.SUBSTANCE: invention may be used for production of electrolyte for solid oxide fuel cell. Liquid-phase synthesis of multi-component ceramic material in ZrO2-Y2O3-Gd2O3-MgO system is carried out by selecting salts ZrO(NO3)2⋅2H2O, Y(NO3)3⋅5H2O, Gd(NO3)3⋅6H2O and Mg(NO3)2⋅6H2O as initial reagents. Above salts are used to prepare diluted solutions. Reverse precipitation of hydroxides from respective salts is carried out using aqueous ammonia solution NH4OH till complete precipitation of all hydroxides and occurrence of the precipitate. Gel-like precipitate is filtered and frozen at -25°C for 24 hours. Synthesized powder of solid solution (ZrO2)0.92(Y2O3)0.03(Gd2O3)0.03(MgO)0.02 is subject to thermal treatment at 800°C. Then compacts are formed by the method of uniaxial pressing under pressure of 150 MPa. Above compacts are burned at a temperature of 1400°C in the tube heater with isothermal holding for 2 h and heating rate of 350-400°C/h.EFFECT: invention allows to lower precipitate agglomeration degree, increase its dispersivity and homogeneity and also hydroxide precipitation completeness.4 dwg, 2 tbl

Clinker cooler // 2614295
FIELD: oil and gas industry.SUBSTANCE: clinker cooler comprises a water bath, a rotating drum installed therein, the means for clinker loading and unloading. The drum is designed as the obliquely installed respectively to its horizontal cylinder axis of rotation with flat end walls of elliptical shape, parallel to each other, perpendicularly or obliquely placed at the angle β to the horizontal drum axis of rotation, while maintaining parallel to each other, at that the major axes of the ellipses end walls are turned relative to each other at the angle ϕ and the spring of barrel shape with a circular coils section is fixed along the entire length of the drum, which equipped with device to change the turns pitch by its stretching or compressing.EFFECT: increase of the clinker cooling degree and expansion of the cooler process capabilities.4 dwg
High-strength concrete // 2614177
FIELD: construction.SUBSTANCE: high-strength concrete of mixture comprising Portland cement, quartz sand, granite breakstone, an integrated filler, an additive and water, in which the sand is represented by the quartz sand with the fineness modulus of 2.2, the breakstone - by the granite breakstone with the fraction of 5-20 mm, the integrated filler - by the integrated filler with the specific surface of 320 m2/kg, consisting of limestone and electrofilter ash at the following ratio of components, wt %: limestone 10-15; electrofilter ash 85-90; and the additive is represented by the water solution with the density ρ=1.032 g/cm3 and the hydrogen index pH=5,5, consisting of a polycarboxylate polymer based on methacrylic acid with the density ρ=0.95 g/cm3 and the hydrogen index pH=7.0; a polycarboxylate polymer based on allyl ether and maleic acid anhydride with the density ρ=1.03 g/cm3 and the hydrogen index pH=7.0; 40% aqueous solution "Russian glyoxal", calcium chloride and water at the following ratio of components, wt %: the polycarboxylate polymer based on methacrylic acid with the density ρ=0.95 g/cm3 and the hydrogen index pH=7.0 - 10.0-17.0; the polycarboxylate polymer based on allyl ether and maleic acid anhydride with the density ρ=1.03 g/cm3 and the hydrogen index pH=7,0 - 13,0-17,0; 40% aqueous solution of "Russian glyoxal" - 3.5-4.0; calcium chloride 5.5-7.0; water - 61.0-62.0, with the following ratio of components of high-strength concrete, wt %: Portland cement - 13.5-16.0; said sand - 31.0-31.5; said breakstone - 45.03-46.53; said filler - 1.23-1.43; said additive - 0.13-0.14; water - 6.61-6.9.EFFECT: increasing waterproofness.1 tbl
ethod for strontium carbonate and iron oxide mixture grindind for strontium hexaferrite production // 2614171
FIELD: chemistry.SUBSTANCE: wet grinding of the stoichiometric mixture of strontium carbonate and iron oxide is carried out in an acidic medium containing calcium silicate, polyacrylic acid and isopropanol in the following ratio, wt %: 0.2-0.6 of polyacrylic acid, 4.0-10.0 of isopropyl alcohol, 0.3-1.2 of calcium silicate, 28-45 of water, stoichiometric mixture of strontium carbonate and iron oxide - the rest.EFFECT: increased coercive force of strontium hexaferrite magnetization, and increased activity during raw ferrite components mixture in strontium hexaferrite production.1 tbl, 3 ex
ethod for boron nitride nanotubes production // 2614012
FIELD: chemistry.SUBSTANCE: method comprises preparation of a reaction mixture of a boron oxide compound and a catalyst, reaction mixture heat treatment in ammonia at a temperature of 950°C-1200°C for 1 hour, nanotubes selection from the reaction products, washing and drying, at that, the reaction mixture consists of a boron oxide compound and a catalyst taken in a proportion providing cation ratio in the range of B/Me=7.1, where Me=Li, Mg , Ca, Sr, lithium, magnesium, calcium, or strontium hydroxide or carbonate, are used a catalyst, and boric acid or ammonium borate is used as a boron oxide compound, the reaction mixture is applied as a 0.1 to 1 mm thick layer to a closed strip of mild steel or a thin mesh which is passed through the furnace with ammonia atmosphere.EFFECT: invention allows to obtain discrete cylindrical boron nitride nanotubes, 10-100 nm in diameter and 0,5-50 microns long, using cheap and low toxic reagents in a continuous manner.1 tbl, 1 ex
ethod for producing nanoceramics by method of combining self-propagating high-temperature synthesis and spark plasma sintering // 2614006
FIELD: chemistry.SUBSTANCE: method for producing the ceramic materials includes milling and high-energy mixing of the initial reactants in a high-energy planetary ball mill by milling balls in the argon atmosphere, and the subsequent simultaneous synthesis-sintering of the reaction mixture Si/C, or B/C, or Si/B/C. Milling and mixing are carried out at a weight ratio of the balls and the initial powders (20:1)-(40:1), with the ball mill rotating speed of 694-900 rev/min and the processing time of up to 15 minutes, and the process of combining the self-propagating high-temperature synthesis and the spark plasma sintering (SHS+SPS), i.e. the simultaneous synthesis-sintering of the reaction mixture is carried out at the spark plasma sintering plant; for this purpose, the reaction mixture is placed into a graphite cylindrical press-mould, fixed between the electrodes, which simultaneously act as press punches, put the press-mould into the chamber, vacuum or inert gas atmosphere is created in the chamber, and pulsed electric current of 1000-5000 A under the load up to 50-90 MPa is passed through the sample to be sintered. The process duration is 5-10 minutes.EFFECT: lower energy costs, excluding the application of various sintering activators, improving the physical and mechanical properties of the resulting material.4 ex, 2 dwg
ethod for barium carbonate and iron oxide mixture grinding for barium hexaferrites production // 2614005
FIELD: chemistry.SUBSTANCE: wet grinding of a stoichiometric mixture of barium carbonate and iron oxide is carried out in an acidic medium containing polyacrylic acid and isopropanol at the following ratio, wt %: 0.2-1.8 of citric acid, 2-8 of isopropyl alcohol, 28-32 of water, stoichiometric mixture of barium carbonate and iron oxide - the rest. As a result, the synthesis activity of the original ferrite components significantly increases, thereby reducing the of barium hexaferrite synthesis temperature and products sintering temperature.EFFECT: increased coercive force in terms of barium hexaferrite magnetization.1 tbl, 3 ex

ethod for producing alloyed yttrium aluminium garnet // 2613994
FIELD: chemistry.SUBSTANCE: method is performed by dispersing the solid aluminium yttrium oxide derivative in nitrate aqueous solutions of alloying elements salts, and the subsequent treatment with the final product extraction. Wherein the initial yttrium aluminium derivative is represented by the product previously obtained by co-precipitation of aluminium and yttrium from the nitrate aqueous solutions. The resulting precipitation product is afterwards subjected to filtration and washing with deionized water. Thereafter, the extracted product is dispersed by the ultrasonic influence in the solution of the alloying elements selected from the group of alkali and alkaline earth metals and the elements of the 3d group, the resulting pulp is dried with constant stirring, the dried product is ground and calcined at 1200°C to 1600°C.EFFECT: invention allows to obtain yttrium aluminium garnet with the uniform distribution of alloying elements.3 cl, 4 dwg, 3 tbl, 4 ex
Refractory mixture // 2613991
FIELD: chemistry.SUBSTANCE: refractory mixture comprises the following components, wt %: chromite ore - 56.0-61.0; magnesite - 30.0-35.0; sodium hexametaphosphate 1.8-2.5; quartzite - 6.5-7.2.EFFECT: increased fire resistance of products made of the refractory mixture.1 tbl
Ceramic composition for manufacturing wall materials // 2613702
FIELD: construction.SUBSTANCE: ceramic composition for manufacturing the wall material comprises, by wt %: inter-shale clay 50-70, burnt rocks 25-38, microsilica (the production waste of ferrosilicon and ferro-alloys) with an average particle size of not more than 0.25 micron with the content of oxides, %: SiO2 - 97.8; CaO - 1.3; MgO - 0.4; R2O - 0.5.EFFECT: increasing frost resistance and compressive strength of the ceramic wall material.3 tbl
ethod for organomineral binder production // 2613701
FIELD: chemistry.SUBSTANCE: method for preparation of an organic-binder comprising obtaining of a peat and water mixture, mixture heating, cavitation dispersion and finished product cooling. Cavitation dispersion is made by flow processing of the peat and water mixture and by ultrasound at low frequencies ranging from 20 to 25 kHz.EFFECT: reduced labor and increased productivity.2 cl
ethod for magnesium silicate proppant preparation, and proppant // 2613676
FIELD: chemistry.SUBSTANCE: method for preparation of magnesium silicate proppant, containing 18-30 wt % of MgO, from raw materials based on natural magnesium component and quartzo-feldspathic sand, includes preliminary calcination of the natural magnesium component, its grinding with quartzo-feldspathic sand, material granulation, calcination and sieving of the raw granules, Bazhenovskoye field serpentinite is used as the natural magnesium component used, containing the following in terms of calcined material, wt %: SiO2 38-46; MgO 38-46; Fe2O3 6-12; CaO 0.2-2.1; Al2O3 0.05-1.1; Cr2O3 0.2-0.7; NiO 0.1-0.45; MnO 0.05-0.25; K2O 0.002-0.2; Na2O 0.06-0.5; trace - the rest; preliminary calcination of the said serpentinite and raw granules calcination is performed at a temperature rise rate of more than 150°C/h. Magnesium silicate proppant is characterized by being obtained by the above method.EFFECT: increased proppant recovery ratio while maintaining its strength characteristics.2 cl, 1 tbl, 1 ex
ethod of protection coating manufacturing and charge for its implementation // 2613645
FIELD: metallurgy.SUBSTANCE: method of protective coating obtainment involves charge preparation by mixing source components containing silicon and zirconium boride at the following ratio, slurry preparation and application on a substrate and further heat treatment of obtained workpiece in air, where boron carbide is added to the charge during preparation at the following component ratio, wt %: Si 65-75, ZrB2 10-30, B4C 10-30, slurry is prepared with organic binder in the form of acetone solution of silicic acid in amount of 5-10 wt % above 100 % of the charge weight on dry basis of silicon dioxide, then a slurry layer is applied onto a substrate out of heat-resistant non-metal material, obtained workpiece is dried at 40-80 °C, and slurry is applied layerwise on the surface of the object to be protected to form protection coating layer of required thickness, followed by final burning in silicon carbide furnace at 500-550 °C.EFFECT: reduced temperature of protection layer formation.2 cl, 2 tbl
Polycrystalline synthetic jewelry material (versions) and method of its production // 2613520
FIELD: chemistry.SUBSTANCE: creating a polycrystalline jewelry material from coloured transparent or translucent oxide ceramics with dopants is proposed. The material consists of oxidic compounds which are represented by yttrium-aluminium garnet or magnesium aluminium spinel, for dying which ions of transition and rare earth metals: zinc, iron, vanadium, chromium, manganese, nickel, cobalt, titanium, neodymium, europium, terbium, ytterbium, holmium, erbium, thulium - are used. The method of manufacturing transparent or translucent ceramic comprises the stages of obtaining a powder mixture and annealing the components, hot uniaxial/cold isostatic pressing, hot isostatic pressing and heat treatment.EFFECT: wider colour range of samples and possibility of obtaining colour effects caused by the activator concentration variable as per the pattern or the crystalline phases are achieved, the cost of goods is much less in comparison with the use of single-crystal material.5 cl, 4 tbl, 2 ex
ethod of protective coating manufacturing // 2613397
FIELD: metallurgy.SUBSTANCE: method involves charge preparation by mixing source components containing silicon, boron and zirconium boride at the following ratio, wt %: Si 65-75, ZrB2 10-30, B 10-30, slurry preparation and application on a substrate, and further heat processing of the obtained workpiece in air medium, where slurry is prepared using an organic binder in the form of acetone solution of silicic acid in amount of 5-10 wt % added to 100 % of the charge weight on dry basis of silicon dioxide, then the slurry layer is applied onto a substrate out of heat-resistant nonmetal material, the workpiece obtained is dried at 40-80 °C, and the slurry is applied onto the object to be protected layerwise until a protective coating of required thickness is formed, followed by final burning in silicon carbide furnace at 550-600 °C.EFFECT: reduced temperature of protective coating formation.2 tbl
ethod of producing high-strength gypsum // 2613388
FIELD: technological processes.SUBSTANCE: present invention relates to method of producing high-strength gypsum by boiling in liquid mediums at atmospheric pressure. Method includes preliminary mechanical activation of gypsum dihydrate and subsequent treatment of activated gypsum dihydrate with water at temperature of 97–100 °C during 4 hours, wherein calcium sulphate dihydrate is subjected to subsequent processing, in which amount of stored energy corresponding to change of interplanar distances of crystal lattice is at least 312 kJ/mol and total amount of energy corresponding to change of surface area of coherent scattering and microdeformations is in range of 5.6–5.8 kJ/mol.EFFECT: technical result consists in highest degree of conversion of gypsum dihydrate, effective pretreatment of gypsum dihydrate before boiling.5 cl, 1 tbl
Hydraulic composition // 2613372
FIELD: chemistry.SUBSTANCE: present invention discloses a hydraulic composition, comprising a dispersing agent, at least one polyatomic alcohol, selected from glycerine and alkylene oxide adducts of glycerol, having average added molar number ranging from more than 0 to not more than 3 (hereinafter referred to as a component A), at least one amine compound selected from triisopropanolamine and alkyldiethanolamines, having an alkyl group with number of carbon atoms from 1 to 3 (hereinafter referred to as a component B), cement and water, where content of C4AF in cement is not less than 6.0 wt% to not more than 15 wt%, content of gypsum dihydrate in cement is not less than 0.5 wt% to not more than 10 wt% and nitrate and nitrite salt content is not more than 90 parts by weight per 100 parts by weight of total amount of components A and B.EFFECT: technical result is higher strength after one day without hot curing.30 cl, 9 tbl
ethod of producing protective coatings on materials and articles with carbon-containing base for exploitation in high velocity oxidant streams // 2613220
FIELD: chemistry.SUBSTANCE: foil layer from the thermally expanded graphite is glued to the carbon-containing base with phenolic resin or polymer adhesive. They are siliconized together after curing of the adhesive seam. Carbon-carbon or carbon-ceramic composite materials of polydimensional reinforcement or construction graphites are used as the carbon-containing base. As a result, silicon carbide coating with nanoscale roughness is formed on the product surface.EFFECT: high oxidation resistance of the coating.4 cl, 3 ex
Bituminous concrete mixture on basis of modified bitumen for highway coating // 2613211
FIELD: building.SUBSTANCE: invention relates to road-building materials, and can be used for highway coating. Bituminous concrete mixture for highway covering includes modified bitumen binder consisting of bitumen BND 60/90 and high-calcium fly ash of Nazarovsky hydroplant. As aggregate, crushed granite and sifting of crushed granite are used. As filler, limestone mineral powder is used in the following ratio of the components: crushed granite of fraction 5-20 mm - 38.7%, sifting of crushed granite - 46.6%, limestone mineral powder - 8.5%, bitumen of the brand BND 60/90 - 5.04%, high-calcium fly ash - 0.56%.EFFECT: invention improves the quality of the road surface by improving physical and mechanical characteristics, reduces swelling and water saturation, and improves water resistance.1 ex, 3 tbl
ixture for heat-resistant aerocrete on bases of nanostructured gypsum binded composite, method of products manufacture // 2613209
FIELD: building.SUBSTANCE: invention is related to the industry of construction materials and can be used for thermal insulation and heat insulation structural materials in the manufacture of buildings and structures in industrial and civil construction. The mixture for heat-resistant aercrete includes nanostructured gypsum bound composite, a foaming agent and water, where the composite is used as a binder consisting of gypsum and fine ground silica-component - a highly concentrated suspension of silica-containing material with particle size less than 5 microns constituting 20-50% and 12-20% of humidity. As a foaming agent synthetic foaming agent is used in the following ratio: the said binder (dry basis) - 60.7-75.3%, gypsum plaster - 10-90%, silica-component - 90-10 %, the synthetic foaming agent - 0.4-0.6% and water - 24.1-38.7%.EFFECT: invention allows improving the basic technical and operational, and thermal characteristics: mechanical strength, porosity, density, thermal conductivity, heat resistance improvement.2 cl, 2 dwg, 5 tbl
ixture for heat-resistant aerocrete on basis of nanostructured gypsum binded composite, method of products manufacture // 2613208
FIELD: building.SUBSTANCE: invention is related to the industry of construction materials and can be used for thermal insulation and heat insulation structural materials in the manufacture of buildings and structures in industrial and civil construction. The mixture for heat-resistant aercrete includes nanostructured gypsum bound composite, a foaming agent and water, where the composite is used as a binder consisting of gypsum and fine ground silica-component - a highly concentrated suspension of silica-containing material with particle size less than 5 microns constituting 20-50% and 12-20% of humidity. As a foaming agent protein is used in the following ratio: the said binder (dry basis) - 60.7-75.3%, gypsum plaster - 10-90%, silica-component - 90-10 %, the foaming agent - 1.3-2.4 % and water - 22.5-36.9 %.EFFECT: invention can improve the basic technical and operational, and thermal characteristics: mechanical strength, porosity, density, thermal conductivity, heat resistance improvement.2 dwg, 5 tbl, 2 cl
Bituminous concrete mixture on basis of modified bitumen for highway coating // 2613068
FIELD: building.SUBSTANCE: invention relates to road-building materials, and can be used for highway coating. Bituminous concrete mixture for highway covering includes modified bitumen binder consisting of bitumen BND 60/90 and low-calcium fly ash of Reftinskaya hydroplant. As aggregate, crushed granite and sifting of crushed granite are used. As filler, limestone mineral powder is used in the following ratio of the components: crushed granite of fraction 5-20 mm - 38.7%, sifting of crushed granite - 46.6%, limestone mineral powder - 9.1%, bitumen of the brand BND 60/90 - 4.76%, low-calcium fly ash - 0.84%.EFFECT: invention improves the quality of the road surface by improving physical and mechanical characteristics of bituminous concrete mixture on the basis of modified bitumen, namely, reduces swelling and water saturation, and improves water resistance and water resistance during prolonged water saturation.3 tbl
Raw material mixture for manufacturing fine-grained concrete // 2613065
FIELD: construction.SUBSTANCE: invention relates to manufacturing fine-grained concretes which can be used for the erection of greenhouses and other structures, mainly for agricultural purposes. The raw material mixture for tmanufacturing fine-grained concrete contains, by wt %: Portland cement 28.0-30.0; ash from coal combustion 55.3-58.5; superplasticizer "C-3" 0.5-0.7; silicate glass ground and sieved through sieve №063 9.0-12.0; electrocorundum sieved through sieve №5 2.0-4.0, with the water-cement ratio of 0.4-0.5.EFFECT: increasing the concrete strength.1 tbl
Composition containing products of alkali metal propyl-functional siliconates block co-condensation with silicates and production method thereof // 2613049
FIELD: construction.SUBSTANCE: invention relates to a composition for hydrophobization of construction materials. Composition for hydrophobization of construction materials mainly contains water-soluble block co-condensates of alkali metals propylsiliconates with alkali metals silicates and water, herewith the block co-condensates contain cross-linking structural elements, which form chain-like, cyclic, cross-linked and/or spatially cross-linked structures, and at least one of which has idealized general formula (I): MO[[Si(R1)xY((y-2)-x)O]a[Si(Y)2]b[Si(R1)xY((y-2)-x)O]c]n [[Si(Y)2]m]OM (1), herewith in the structural elements, derivatives of alkoxy silanes and silicates R1 denotes a propyl residue, Y respectively independently denotes OM or OH or in cross-linked and/or spatially cross-linked structures independently denotes O1/2, M independently denotes an alkali metal ion, x respectively independently denotes 1 or 2, y denotes 3 or 4, wherein (x+y)=4; a ≥ 1, c ≥ 0 and b ≥ 0; the number of blocks n ≥ 1, the number of silicate blocks m ≥ 2, wherein (b+m)=v and the ratio of (a+c)/v ≤ 1.EFFECT: invention also relates to a method of producing the said composition.16 cl, 2 tbl
Polymer of maleic acid, allyl ether and methacrylic acid compounds, and preparation and use thereof // 2612831
FIELD: chemistry.SUBSTANCE: present invention relates to additives for hydraulically setting systems. Described is a polymer P containing: a) m mol% of at least one structural link A of Formula (I): b) n mol% of at least one structural link B of Formula (II): and c) o mol% of at least one structural link C of Formula (III): where R1 and R2, each independently represents COO-M, R3 represents H or CH3, R4 represents , R5 is an alkylene group with 1–6 C-atoms, R6 represents an alkyl group with 1–20 C-atoms, R7 represents H or CH3, R8 represents a M, hydroxyalkyl group with 1–6 C-atoms; where substitutes A independently represent from C2- to C4-alkylene group, index q has a value from 2 to 300, in particular from 2 to 50, index r equals 0; where M = cation, preferably H+, alkali metal ion, alkali-earth metal ion, divalent or trivalent metal ion, NH4+ or organic ammonium compound, especially preferably H+, Na+, Ca++/2, Mg++/2, NH4+ or organic ammonium compound; where m, n, o each independently represents a number, where sum m+n+o=100 and m>0, n>0 and o>0; and where m=10–80, n=10–50, o=10–50. Also described is a method of producing said polymer in presence of a free-radical polymerisation initiator at reaction temperature from 10 °C to 50 °C, preferably, 15 °C to 35 °C. Also described is use of said polymer to improve processability of hydraulically setting compositions. Described is a hydraulically setting composition containing said polymer, and method for preparing it.EFFECT: obtaining polymers having improved plasticising effect hydraulically setting compositions and providing their good processability during a long period of time.16 cl, 6 ex, 2 tbl
ethod for producing non-autoclaved aerated concrete // 2612768
FIELD: construction.SUBSTANCE: method for manufacturing non-autoclaved aerated concrete, which comprises the preparation of gas concrete mixture by means of co-grinding the dry ingredients of the mixture, forming a massive and its maintaining; co-grinding the limestone of particle size from 0.16 to 5 mm and the aluminum powder is previously carried out in the ball mill to the specific mixture surface of 300-320 m2/kg, followed by introducing microsilica and polypropylene fibers into the mixture and the additional grinding for 3-5 minutes, and then Portland cement and water are introduced into the resulting mixture.EFFECT: improving physical and mechanical properties of aerated concrete products, accelerating the production process of aerated concrete manufacturing.1 tbl, 1 ex
Cold method for producing extra strength stone mastic asphalt concrete for repairing and setting up layers of road surface // 2612681
FIELD: transportation.SUBSTANCE: method involves preparing a mixture with use of mineral material in the form of rock rubble, sand residues of rock rubble, and mineral powder by means of mixing them with cement and bitumen emulsion, with the subsequent coating of the road surface with the mix and its packing. The mixing is done by successively introducing the following components to the cold mineral material, wt %: cement - 3.0-6.0, nanopolymeric water soluble additive with the particle size of 50-300 nm, a latex containing styrene-based copolymer with polar monomers or butadiene, acrylic or methacrylic acid as dry matter - 0.1-0.5, nonionic surfactants from theethoxylated higher fatty alcohols or alkylphenols class - 0.05-0.1, cationic bitumen emulsion as bitumen - 3.0-5.0.EFFECT: improved physical and mechanical properties of asphalt pavement and better eco-friendliness of the process.4 tbl, 7 ex
ixture of accelerators for peroxide curable resin mixtures, resin mixture containing mixture of accelerators, mortar of reactive resins and dual component mortar system containing mortar of reactive resins, as well as use thereof // 2612502
FIELD: chemistry.SUBSTANCE: present invention relates to a mixture of accelerators for peroxide-curable mixtures of resins, which comprises a main accelerator (I) and a co-accelerator (II), wherein main accelerator (I) is a compound of formula (I): , and co-accelerator (II) is a compound of formula (II-1) or (II-2): in which R1 and R2 respectively independently denote an alkyl group with one or two carbon atoms, a hydroxyalkyl group with 1–3 carbon atoms or once or repeatedly ethoxylated or propoxylated hydroxyalkyl group with 1–3 carbon atoms. Molar ratio of (I):(II) ranges from 1:1 to 5:1. Said mixture of accelerators is used as an accelerator for curing agents based on organic peroxides for use in dual component mortar systems.EFFECT: use of this accelerator enables to prolong gelatinisation time without negative effect on properties of system, in particular, such as moderate hardening at low temperatures and low load of completely cured substances at high temperatures, which enables to preserve properties of system in entire temperature range from -10 to +40 °C.17 cl, 2 tbl, 3 ex
Zinc oxide varistor ceramics // 2612423
FIELD: chemistry.SUBSTANCE: zinc oxide varistor ceramics comprises oxides of zinc, bismuth, antimony, cobalt and aluminum in a proportion, wt %: ZnO 85-95, Bi2O3 1.38-4.15, Sb2O3 0.96-2.9, Al2O3 1.66-4.95, Co2O3 1-3. Bismuth, antimony, cobalt and aluminum oxides have the following ratio 1.0:0.7:1.2:0.72. The resulting varistor ceramics has breakdown voltage of 4.3-4.6 kV/mm, nonlinear coefficient of 47-53 and leakage current density of 0.6-7 mA/cm2.EFFECT: reduced eakage current density, while providing high electrical characteristics, the obtained high-voltage varistor ceramics is cheaper.1 tbl, 4 ex

aterials for asphalt pavement and methods of its preparation // 2612387
FIELD: construction.SUBSTANCE: present invention relates to the materials for asphalt pavement. The material for asphalt pavement containing bituminous binder at the amount of about 3 to about 8 wt % of the material for asphalt pavement comprising a base bitumen and polymer which is homopolymer of the high density oxidized polyethylene, wherein the polymer is at the amount of about 0.25 to about 10 wt % of base bitumen.; and the filler is at the amount of about 92 to about 97 wt % of the material for asphalt pavement. The method of prepairing the material for asphalt pavement including the stage of mixing the bituminous binder and the filler under the conditions effective for preparation of the material for asphalt pavement where the material is the above one. The invention is developed in the dependent claims of the formula.EFFECT: invention provides reduced delamination and tracking of asphalt pavement.8 cl, 3 dwg
Ceramic pigment // 2612384
FIELD: chemistry.SUBSTANCE: ceramic pigment contains, wt %: Ga2O3 32.0-36.0; CaO 20.0-24.0; Sm2O3 20.0-24.0; TiO2 20.0-24.0. Pigment colour is yellow.EFFECT: increased alkali resistance of pigment.1 tbl
Glaze // 2612383
FIELD: motors and pumps.SUBSTANCE: glaze contains, wt %: SiO2 38.0-41.0; Al2O3 0.5-1.5; B2O3 15.0-17.0; ZnO 7.0-8.0; ZrO2 15.0-16.0; CaO 15.0-16.5; Na3AlF6 4.5-5.5.EFFECT: increased heat resistance.1 tbl
Glaze // 2612379
FIELD: chemistry.SUBSTANCE: glaze includes, wt %: quartz sand 45.5-54.5; red lead 20-25; potash 10-15; soda 1-2; cobalt oxide 0.5-1; copper oxide 0.5-1; portland cement 5-7; drill 5-7.EFFECT: increased frost resistance.1 tbl
Ceramic mixture for making facing tiles and stove tiles // 2612375
FIELD: chemistry.SUBSTANCE: ceramic mass for manufacture of tiles, stove tiles includes, wt %: 61.0-63.0 of white-burning clay; 14.0-16.0 of fireclay; 12.0-14.0 of zircon; 6.0-7.0 of wollastonite; 3.0-4.0 of pozzolan cement.EFFECT: increased strength.1 tbl
ethod of titanium carbonitride nanopowder obtainment // 2612293
FIELD: metallurgy.SUBSTANCE: nitrogen plasma flow is generated, raw titanium-containing material and gaseous hydrocarbon are injected in the flow and mixed, steam and gas carbonitride-forming reaction mix of required composition is formed, carbonitride is condensed, force-cooled and separated from the flow. Titanium micropowder of +0.5-5 mkm size is used as titanium-containing powder material natural gas with methane content not less than 90.0 vol% is used as gaseous hydrocarbon, and they are injected together at the flow temperature not less than 5200 K, reaction products are cooled at 2800-2000 K, then passivated and coagulated by propenoic acid vapour added to the flow at molar ratio of titanium to propenoic acid 1:(0.025-0.075).EFFECT: improved quality and increased output of titanium carbonitride nanopowder, significant reduction of free pyrolytic carbon content, powder nanoparticle protection against sirface oxidation, increased efficiency of powder entrapment in filter.1 tbl, 7 ex
ethod for strontium hexaferrite nanoparticles preparation // 2612289
FIELD: chemistry.SUBSTANCE: method for strontium hexaferrite nanoscale particles production includes mixing of a strontium nitrate solution in distilled water with a ferric nitrate solution in glycerol and distilled water solution to achieve the atomic ratio Sr/Fe=1:10, continuous heating and stirring at 50°C for one hour, addition of ammonia and polyethylene glycol in a ratio of 5:1, stirring of the resulting mixture at 80°C for 8 hours and centrifuging at a speed of 11000 rpm, calcination at 450°C for 1.5 hours, and sintering at 1000-1100 °C, all heating and stirring processes are conducted under the influence of continuous ultrasonic irradiation with frequency of 10-25 kHz.EFFECT: increased homogeneity of strontium hexaferrite nanoparticles size.3 ex
ethod for producing gypsum binder // 2612287
FIELD: chemistry.SUBSTANCE: invention relates to production of composite binders on the basis of gypsum and mineral admixtures, and may be used for the manufacture of interior decoration materials. The method for producing gypsum binder comprises joint mechanical activation of calcium sulphate dihydrate and nepheline-containing additive at a ratio of 1:0.43-4.0. Nepheline concentrate or apatite-nepheline ore processing waste is used as a nepheline-containing additive with a nepheline mass content of 75-80 or 50-55%. Mechanical activation is carried out in a planetary mill for 2-5 minutes at a power supply rate of at least 5 kJ/s per 1 kg of mix to achieve binder specific surface area of 900-1300 m2/kg.EFFECT: method for producing a cheaper and more environmentally friendly binder, with improved compression strength.3 cl
Chemical additive for cement articles // 2612185
FIELD: chemistry.SUBSTANCE: invention relates to composition of a chemical additive and can be used in production of construction materials. Chemical additive for increasing strength of cement products, containing acidic substances, which enter into exchange reaction with products of hydration of cement dough to form insoluble compounds, accelerating cement hardening process, additive used is spent hydrochloric acid etching solutions from steel rolling plants with density of 1.35 g/cm3, containing (wt%) 25.5–27.0 acidic substances in following ratio of components (g/l): hydrochloric acid – 15–17; iron (II) chloride – 320–330; iron (III) chloride – 11–13; water – 990–1,004.EFFECT: technical result is reduction of toxicity of additives and high strength of articles with its use.1 cl, 2 tbl
ethod for laser processing of ductile tool from zirconium dioxide ceramics // 2612182
FIELD: technological processes.SUBSTANCE: invention relates to tool industry, in particular to methods of processing a ductile tool from zirconium dioxide ceramics (zirconium dioxide-based ceramics ZrO2-Y2O3-ZrO). The method of laser processing of ductile tool from zirconium dioxide the tool surface is subjected to pulsed laser action, each pulse group of which forms a laser beam spot with a certain power of the beam on a sample, with the laser beam spot overlap ratio in the range from 0.1 to 0.9. The treatment is performed with the pulse repetition rate from 120 to 130 kHz, with the number of pulses in a group 95 and a power beam of the sample from 12 to 13 watts. Optimally, when the surface of the tool is subjected to pulsed laser irradiation from a laser beam spot overlap ratio in the range from 0.3 to 0.5.EFFECT: increase of durability of ductile tools.2 cl, 9 dwg

ethod of producing of composite ceramic products // 2612179
FIELD: machine building.SUBSTANCE: invention can be used to produce composite ceramic products of support element type (for example, rings/shafts of roller/journal bearings) or tools in form of cup-tip tools or cutting ceramic plates. A method of producing of the composite ceramic products includes preparation of an initial charge comprising a powder matrix Al2O3, threadlike reinforce crystals of silicone carbide and viscous binding substance, formation by extrusion from the initial charge of a flat billet with orientation of the threadlike reinforce crystals in direction of the extrusion, forming from the billet of a briquette in viscous-flow state, stripping of the binding substance from the briquette and hot pressing of the product. To form a cylindrical briquette the flat billet in the viscous-flow state is wounded on the mandrel, during the binding substance stripping the briquette axis has a vertical position, the hot pressing of the product is performed in the direction of axis of the cylindrical briquette.EFFECT: expansion of the process abilities of the method and increased crack strength of the products.1 dwg, 1 ex
ethod of producing ceramic piezomaterials from nano- or ultradisperse powdered oxygen-octahedral type phases // 2612174
FIELD: chemistry.SUBSTANCE: invention relates to method of producing ceramic piezomaterials from nano- and ultradisperse powdered oxygen-octahedral type phases containing titanium ions (IV), niobium (V), zirconium (IV), tungsten (VI), zinc (II), nickel (II) and iron (III), cobalt (III) and other p- or d-elements in (B) position. The method of producing ceramic piezomaterials from nano- and / or ultradisperse powdered oxygen-octahedral type phases is characterized by the fact that the nano- and / or ultradisperse powdered oxygen-octahedral type phases are treated with alcoholic or aqueous-alcoholic solution of 1-8 wt % ammonium glycolate (NH4HC2O3) or ammonium formate (NH4COOH), or their mixtures before molding and sintering operation, afterwards the liquid phase is removed and the resulting powder is dried. Press-half-finished product made from the thus treated powder is being sintered for 1.5-3 hours at a temperature from 900 to 1250°C.EFFECT: invention increases the relative permittivity and piezoelectric modules while maintaining electromechanical coupling coefficients of piezomaterials.6 cl, 30 ex, 2 tbl

ethod of mortar preparation on basis of cement // 2612173
FIELD: building.SUBSTANCE: invention relates to building materials and products and the technology of production of concrete, reinforced concrete, mortar, compounds, composites, in particular, as well as to the processing of radioactive waste and its disposal, in particular. During mortar preparation on the basis of cement it is subjected to irradiation by electromagnetic field after its solidification. Mortar irradiation is carried out with ultrahigh frequency of electromagnetic field with frequency range 500-5000 MHz, at power density of irradiation 0.1-10 watt / cm3 for 5-300 seconds, accompanied with mortar heating at temperatures 20-60°C.EFFECT: invention improves the strength of products based on cement mortars.1 dwg, 1 ex
Composition for light non-bake ash gravel manufacture // 2612056
FIELD: building.SUBSTANCE: invention relates to the building materials industry, to the production of aggregates for lightweight concrete, in particular. The mixture for non-bake gravel ash contains: 1.5-2% of liquid glass; 55-58% of hydro-removing ash; 18-20% of Portland cement; 30% of 3.5-4% of ttechnical perhydrol and 16-22% of water.EFFECT: invention allows reducing the density of non-bake ash gravel without heat treatment.3 tbl
Composition for road construction // 2612039
FIELD: construction.SUBSTANCE: composition for road construction, containing cement, soil-aggregate mixture and a modifier contains oil including cuttings as a modifier and additional fiber, %: 100 of soil-aggregate mixture, 2-12 (over 100%) of cement, 10-50 (over 100%) of cuttings, 0.01-5 (over 100%) of fiber.EFFECT: increased strength and frost resistance, as well as economic efficiency of the construction.1 ex, 1 tbl
ethod of strontium carbonate and iron oxide mixture milling in strontium hexaferrite production // 2611814
FIELD: chemistry.SUBSTANCE: wet milling of the stoichiometric mixture of strontium carbonate and iron oxide is carried out in an acidic medium containing polyacrylic acid and isopropanol in the following ratio, wt %: 0.2-0.6 of polyacrylic acid, 4.0-10.0 of isopropyl alcohol, 0.2-1.0 of calcium carbonate, 28-45 of water, stoichiometric mixture of strontium carbonate and iron oxide - the rest. Application of the proposed milling method allows considerable reduction of the charge firing temperature to provide the specific magnetization of not less than 50 nT⋅m3/Kg, and temperature of moulded workpieces subsequent sintering.EFFECT: increased coercive force of strontium hexaferrite magnetization of more than 235 kA/m, and increased activity during raw ferrite components mixture in strontium hexaferrite production.1 tbl, 3 ex
Asphalt-concrete mixture // 2611801
FIELD: chemistry.SUBSTANCE: invention refers to technology for production of road-building materials, namely, asphalt-concrete mixtures for construction and repair of motorroads, building of hydrotechnical facilities, civil building. Asphalt-concrete mixture including bitumen, mineral material in the form of carbonate rock of 5-20 mm fraction and carbonate rock sifting of 0-10 mm fraction contains mineral powder, which is a mixture of sludge from chemical water treatment units of enterprises with waste molding mixtures of foundry in ratio 0.1-0.5:1.0, adhesion additive in quantity of 0.3-1.5 wt.% of bitumen weight produced by interaction of vegetable oil phosphatides, polyethylene polyamine, caprolactam in paraffin melt at 160-180°C in ratio 1.0-1.3:0.8-1.0:0.2-0.4:1.0 with subsequent melting of the mixture of above adhesive additive and bitumen at 140-160°C, melt homogenization for 1-2 min, mixing with dry component mixture heated to 130-150°C, with the following component content in the asphalt-concrete mixture, wt.%: bitumen (based on weight of dry component mixture) 4.5-7.0, breakstone of carbonate rock of 5-20 mm fraction 30.0-50.0, mineral powder, i.e. mixture of sludge from chemical water treatment units with waste molding mixtures of foundry in ratio 0.1-0.5:1.0 1.0-10.0, sifting of carbonate rock being the rest.EFFECT: increased asphalt-concrete density, strength at temperature of +50°C, improved adhesion of bitumen bonding agent to mineral fillers and powder, lowered water saturation of asphalt-concrete mixture.2 tbl, 3 ex
Concrete mix // 2611788
FIELD: construction.SUBSTANCE: concrete mix, comprising Portland cement, crushed stone, microfiller in the form of limestone, superplasticizer and water. The crushed stone is rubble of limestone with the fraction 5-20 mm, the microfiller is a limestone screening of the fraction below 0.16 mm, the fine filler from limestone screenings of the fractions 5.0-0.63 mm and 0.63-0.16 mm, the superplasticizer C3 based on the product of condensation naphthalene sulphonic acid with formaldehyde, at the following content, wt %: Portland cement 12.1-14.1, 10.5 mm crushed limestone fractions 35-40 , fine filler from limestone screenings of the fraction 5 - 0.63 mm 18.15-20.15 fine filler from limestone screenings of the fraction 0.63-0.16 mm 14.52-15.89, microfill from limestone screenings of the fraction below 0.16 mm 7-8.87, C3 superplasticizer 0.06-0.141 water - the rest.EFFECT: improved homogeneity of the concrete mix by reducing the peelability.1 tbl
 
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