Self-levelling magnesia composition. RU patent 2453516.

FIELD: construction.

SUBSTANCE: self-levelling magnesia composition, containing a magnesia cement, including active magnesium oxide and a salt component in the form of an aqueous solution of magnesium chloride, an inert filler - a quartz or granite sand, a stabilising and a water-retaining additive, and also a complex modifying additive, the active magnesium oxide is caustic brusite, and the stabilising and water-retaining additive is higher alcohol of the row C₁₂-C₁₈. At the same time the modifying complex additive consists of a hydrophobic surfactant in the form of a copolymer of vinyl chloride\ethylene\ vinyl laurate or vinyl acetate \versatate\ acrylate, or vinyl acetate\ vinyl alcohol and hydroxycarboxylic acid at the following ratio of components, wt %; caustic brucite 21.0-31.5, filler - quartz or granite sand 31.5-53.2, stabilising and water-retaining additive - alcohol of the row C₁₂-C₁₈ 0.5-1.8, complex modifying additive: the specified hydrophobic surfactant of copolymer 0.5-1.0, hydroxycaroxylic acid 0.2-1.5, salt component - aqueous solution of the magnesium oxide - balance.

EFFECT: increased time of composition viability, higher strength in compression, improved decorative properties of the composition, expansion of raw base of the magnesium cement and assortment of materials on its basis.

2 tbl

IPC classes for russian patent Self-levelling magnesia composition. RU patent 2453516. (RU 2453516):

C04B28/30 - containing magnesium cements (magnesium oxide cements C04B0028100000)

C04B111/20 - LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS (devitrified glass-ceramics C03C0010000000); REFRACTORIES (alloys based on refractory metals C22C); TREATMENT OF NATURAL STONE

Another patents in same IPC classes:

Method to make decorative items with filler from amber and/or wastes of its processing (versions) / 2452715
According to the first version, the method to make decorative items with a filler from amber and/or wastes of its processing with thickness of not more than 20 mm includes preparation of a moulding compound, at the ratio of components, wt %: caustic magnesite 20-25 filler - amber 10-15 magnesium chloride solution 20-25 filler - quartz sand balance, which is poured into a mould of the necessary size, compacted with vibration for 0.5 - 1 minute, dried at 13-30°C for 1-3 days, then taken out of the mould, ground, polished, final polishing is done, for instance, with a mixture from paraffin and wax for setting or, if required, coated with a varnish. The second and third versions are characterised for the method of making decorative items.

Magnesium-based composite material / 2415099
Invention relates to the industry of construction materials and can be used to make articles used in inner and outer lining of buildings, making wall blocks, panels, monolithic structures, as well as for filing cracks in buildings and other structures. The magnesium-based composite material which contains caustic magnesite, sealer - aqueous magnesium chloride solution with density 1.20-1.25 g·cm-3, also contains a modifying additive - water-soluble fluoride MeF, where Me denotes NH4 + Li+, Na+, K+, with the following ratio of components in wt %: caustic magnesite 22.0-31.0, said aqueous magnesium chloride solution 23.0-37.0, filler 31.1-54.9, said fluoride 0.10-0.90.

Method of producing molten-cast comsilite ctc material for lining non-ferrous metallurgy thermal units / 2410349
Proposed method comprises preparing mix material by mixing quartz sand powder, metallurgical magnesite, alumina- and fluorine-containing components, smelting of produced mix material, pouring the melt into die, melting, removing casting from die, annealing and cooling. Said alumina- and fluorine-containing components represent aluminium fluoride or magnesium fluoride, and, additionally, potash, taken in the following ratio, wt %: quartz sand - 23.8-38.9, metallurgical magnesite - 15.2-29.4 refractory clay 4.3-31.5 fluoride-containing component - 17.1-18.9, and potash - 15.2-16.8. In preparing mix material, pelletising is additionally performed to produce granules with diametre of 5-20 mm of plastic mass obtained by adding water to aforesaid mix. Granules are dried, annealed at 800-900°C, fused at 1450-1500°C, and cooled down at the rate of 35-45°C/h.

Raw mixture for manufacturing of heat-insulating products / 2396228
Invention relates to composition of heat and sound insulation materials made on the basis of industrial wastes, and can be used in construction of residential and industrial buildings and constructions. Raw mixture contains filler representing organic wastes in form of wool combings or flax boon, water and polymer-modified foamed magnesian binder, which includes magnesium oxide, magnesium chloride solution and foamer. In addition, mixture contains 5-85% water dispersion of polymer. As filler, it additionally contains spent sorbents of sewage or technological water purification, which contain ions of heavy metals, wt %: filler 20.0-30.0; water polymer dispersion 16.0-24.0; magnesium oxide 11.0-15.0; magnesium chloride solution 14.0-23.0; foamer 1.0-3.0; water - the remaining part.

Dry mortar / 2392246
Dry mortar contains the following components, wt %: ash 50-85, caustic magnesite powder 10-30, natural mineral schungite of III type 0.1-10, modifying additives 0.1-1.5, construction sand - the rest.

Raw mixture for finishing and making construction and decorative articles / 2388716
Invention relates to composition of a raw mixture for finishing work, making construction and decorative articles. The raw mixture for finishing and making construction and decorative articles, which contains caustic magnesite, filler, aqueous magnesium chloride solution, plasticising additive, contains aqueous magnesium chloride solution with density 1.15-1.25 g/cm3, plasticising additive in form of a suspension of schungite powder of a fraction not larger than 1 mm in an aqueous magnesium chloride solution with density 1.12-1.2 g/cm3 with the following ratio of components, in pts. vol: said schungite powder 1.0, said aqueous magnesium chloride solution 1.0, with the said ratio of components of the raw mixture, in pts. vol: caustic magnesite 0.9-1.2, filler 1.0-2.0, said aqueous magnesium chloride solution 0.4-0.6, said suspension 0.6-0.9.

Dry construction mixture / 2388715
Invention relates to decorative construction materials designed for protecting equipment and people in medical, industrial, scientific, administrative and residential facilities from the effect of ionising radiations. The dry construction mixture contains the following in wt %: caustic magnesite powder 10-15, barite concentrate 80-89, modifying additive 0.1-0.5, natural modification schungite III mineral - the rest. The invention is developed in subclaims.

Composition based on chloromagnesian binder / 2380334
Invention relates to industry of construction materials and can be used in making wall objects, self-leveling walls, wall blocks, during production of light foamed and heavy concrete, dry construction mixtures, meant for outer finishing of buildings and structures - plastering, spackling, adhesive compositions etc.

Raw mix for building units / 2379250
Raw mix contains a vehicle - magnesium oxide, a sealer - dissolved magnesium chloride, a reinforcing filler. The reinforcing filler is cord fibre being waste products of tyre casing process. Temperature of dissolved magnesium chloride makes 50 to 60 °C, while its density is 1.18 to 1.235 g/cm3 in the ratio as follows, wt %: Magnesium oxide 36-43; Dissolved magnesium chloride 34-52; Cord fibre 10-26.

Adhesive binding composition / 2379249
Invention can be used for manufacturing of building units, solid constructions, floors, in backfilling of cracks in buildings and structures, as well as an adhesive material in agglomeration of anthropogenic and radioactive waste to be disposed. An adhesive binding composition containing a magnesite bond consisting of active magnesium oxide and aqueous solution of magnesium chloride, a filling compound in the form of carry-over ash of thermal stations, contains caustic magnesite as active magnesium oxide and additionally stearic acid salt, vinyl copolymer, e.g. vinyl chloride vinyl laurate ethylene, cellulose ester, e.g. methylhydroxyethyl, and glass fibre in the following ratio, wt %: caustic magnesite 11.20-42.00, aqueous solution of magnesium chloride 32.96-49.23, said carry-over ash 8.00-55.60, stearic acid salt 0.17-0.63, vinyl copolymer 0.17-0.63, cellulose ester 0.003-0.016, said glass fibre 0.005-0.170.

Method to prepare concrete mixture to manufacture ballast pipe and device for previous preparation of concrete mixture tempering water / 2453515
Method to prepare a concrete mixture for manufacturing of a ballast pipe includes mixing of a sulfate-resistant portland cement, heavy spar ore, a plasticising additive on the basis of polycarboxylate ether and water at the following ratio of the components, in wt %: sulfate resistant portland cement 12 -17, water 4-10, plasticising additive on the basis of polycarboxylate ether 0.1- 0.25, heavy spar ore - balance, at the following content of heavy spar ore fractions in wt %: coarse 3-25 mm 7 - 18, fine 0.16 mm - 3 mm 70 - 85, very fine 0.01-0.16 mm 7 - 16, and tempering water of the concrete mixture is previously processed, sending through the magnetic field, where intensity is maintained with the value of 120000 -140000 A/m, with the speed of 0.5 -3.0 m/s, at the same time the water treatment time makes at least 2 hours. The device for preliminary treatment of the concrete mixture tempering water for manufacturing of a ballast pipe comprises a reservoir for water storage, with inlet and outlet nozzles, and a unit of tempering water treatment, the outlet nozzle of the reservoir is connected with the inlet of the tempering water treatment unit arranged in the form of a hollow extended element, inside of which there is permanent magnet with formation of a gap with the inner wall of the hollow extended element, the value of which makes 3 -5 mm, at the same time the permanent magnet has the intensity of the magnetic field of 120000 -140000 A/m, the outlet of the tempering water treatment unit is connected to the inlet nozzle of the reservoir, the outlet of the tempering water treatment unit is connected with the inlet nozzle of the reservoir, the reservoir has an opening for water draining. The invention is developed in subclaims of the invention formula.

Method to prepare concrete mix on porous filler / 2452714
In the method to prepare a light concrete mixture on a porous filler, including mixing of portland cement with an additive, a porous filler and tempering water, first a superplasticiser additive in the amount of 0.4-0.5% of portland cement mass is added into 50-60% of the total amount of tempering water and mixed with portland cement during 50-60 s, then the whole porous filler is added, such as highly light porous filler with medium density of not more than 250 kg/m3, and again mixed for 70-80 s, afterwards the remaining part of tempering water is added, and the mixture is finally mixed for 30-40 s.

Raw mix to make products / 2452709
Raw mix contains, wt %: cast iron chips 48.0-55.0, graphite 2.0-5.0, gypsum 20.0-25.0, water 20.0-25.0.

Concrete mixture / 2452708
Concrete mixture contains a high-lime flue ash of thermal power plants - TPP, microsilica, water and mineralized drains - waste of non-ferrous metallurgy production, containing from 80 to 350 g/l of calcium and sodium chlorides, additionally contains TPP slag with fraction of 0.16-5 mm as a filler at the following ratio of components, wt %: high-lime flue ash of TPP 42-45, TPP slag of specified fraction 35-40, microsilica 3-4, mineralised drains with specified content of chlorides 1.5-2.5, water - balance.

Artificial rock / 2452707
Artificial rock contains the following components, wt %: cement 12-15, quartz sand 25.4-30.2, ferrous oxide 1-1.5; ferrous hydroxide 1-1.5; quicklime 12-15, aluminium powder 0.1-0.3 and water heated to the temperature of 90-98°C, 40-45.

Cement wood mixture / 2452706
Cement wood contains the following components, wt %: cement 30-35; hogged chips 63.06-67.68; gypsum 0.5-1; carboxymethylcellulose 0.02-0.04, superplasticiser S-3 0.9-1.3; at water-cement ratio of 0.7-0.9.

Polymer mortar / 2452705
Composition for an anti-corrosion protective coating of building structures operating under conditions of available aggressive media, includes an epoxide resin ED-20, polyethylene polyamine - PEPA, an additive - a naphthalene bromide, a filler - a magnesium fluoride. Additionally it contains a surfactant - a chlorinated butyl rubber, at the following ratio of components, wt %: epoxide resin ED-20 - 12-18, PEPA - 2.4-3.6, naphthalene bromide - 0.02-0.16, chlorinated butyl rubber - 0.40-0.55, magnesium fluoride - 77.69-85.18.

Polymer mortar / 2451646
Invention relates to polymer anticorrosion protective coatings for building structures working in aggressive media. The composition for anticorrosion protective coating of building structures working in aggressive media contains epoxy resin ED-20, polyethylene polyamine PEPA, an additive - chloroparaffin, filler - magnesium fluoride, and additionally contains chlorobutyl rubber, with the following ratio of components, wt %: epoxy resin ED-20 12-18, PEPA 2.4-3.6, chloroparaffin 0.02-0.16, chlorobutyl rubber 0.4-0.55, magnesium fluoride 77.69-85.18.

Composition to manufacture heat insulation material / 2450993
Composition for manufacturing of a heat insulation material contains the following components, wt %: - 30-50% sodium liquid glass with a silicate module 3-4.5 -71-77, a hardener - a sodium hexafluorosilicate and/or hexafluorotitanate 8.5-9.1, a foaming component - a trietanol ammonium salt or a sodium salt of lauryl sulfate 0.9-1.2, a filler - asbestos-chrysotile or polypropylene fibre, or a chopped basalt fibre, or their mixtures at any ratio of components 2.4-3.4, water - balance.

Method for production of concrete plasticizer from distillery dreg / 2243950
Method includes centrifugal preseparation of distillery dreg to provide concentrate, treatment obtained concentrate with alkali carbonate to pH 8-11, followed by addition of superplasticizer or lignosulfonate solution providing ratio of total amount of alkali carbonate and concentrate to amount of solution ‹1. Superplasticizer or lignosulfonate solution is added to obtained centrifuge effluent, providing ratio of centrifuge effluent to said solution from 0.2 to 2.0 to produce another plasticizer. Dry alkali carbonate content is not more than biomass content in raw distillery dreg. Method of present invention is useful in concrete mixtures manufacturing for producing of precast concrete and cast-in-place constructions.