Magnesium-based composite material. RU patent 2415099.

FIELD: chemistry.

SUBSTANCE: 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.

EFFECT: low water absorption, high water resistance and crack resistance while preserving strength properties.

2 tbl

IPC classes for russian patent Magnesium-based composite material. RU patent 2415099. (RU 2415099):

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

C04B111/27 - 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 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.

Raw composition for manufacturing of construction materials and products / 2378218
Present invention is related to raw compositions intended for manufacturing of construction materials and products on their basis. Raw composition for manufacturing of construction materials and products, including magnesia binder, which includes caustic magnesite and aqueous solution of chloride magnesium with density of 1.19-1.3 kg/l, mineral filler and additive, contains, as mineral filler, mixture of loose substances with specified surface of 3000-6500 cm2/g, which consists of TPP flue ash, quartz sand, kaolin and hydrophobic surface-active substance - surfactant powder - copolymer: vinyl acetate/vinyl alcohol or vinyl chloride / ethylene, or vinyl chloride /ethylene/vinyl aurate and additionally contains water-reducing additive, and also stabilising and water-reducing additive - water soluble ether of cellulose at the following ratio of components, wt %: caustic magnesite 28.0-40.0, quartz sand 30.0-42.0, TPP flue ash 10.0-14.0, kaolin 1.0-4.0, specified surfactant 0.5-0.9, water-reducing additive 0.01-0.30, water soluble ether of cellulose 0.01- 0.02, specified aqueous solution of magnesium chloride the rest. Invention is developed in dependent claims of formula.

Method of construction materials manufacture based on magnesium oxychloride cement / 2376260
Method of construction materials production includes mixing of activated powder based on caustic magnesite, magnesium chloride solution and filler. The activated powder is produced by joint milling to specific surface of particles 4000-20000 cm2/g of magnesite caustic powder, tribasic calcium phosphate, silica gel, methylcellulose and construction gypsum at the following ratio of components, wt %: magnesite caustic powder 40-70, tribasic calcium phosphate 1-8, silica gel 3-12, methylcellulose 0.04-0.6, construction gypsum is the remaining.

Gypsum mixture / 2415098
Invention relates to a gypsum mixture and can be used in the construction industry to make various articles, for example blocks and slabs. The gypsum mixture contains the following in wt %: gypsum hemihydrate 28-30, slaked lime 1.2-1.5, portland cement 0.3-0.5, quartz sand with grain size of up to 0.8 mm 41.97-47.95, water 20-23, zinc sulphate 0.03-0.05, mullite-silica wool 2.5-3.

Complex additive for concrete mixtures and mortar / 2415097
Invention relates to construction materials, specifically to compositions of complex additives for concrete mixtures and mortar. The complex additive for concrete mixtures and mortar contains the following, in wt %: hardening accelerator 20.0-99.5, plasticiser 0.5-80, where the hardening accelerator contains the following, in wt %: mixture of salts based on sodium rhodanate and thiosulphate 34.0-99.0, formate 0.5-33.0, sodium acetate 0.5-65.5. The invention is developed in subclaims.

Light cement panel reinforced with fibre / 2414351
Invention relates to a light fibre-reinforced cement panel (versions) and method of making said panel. The invention can be used in the building industry. The reinforced light dimensionally stable panel, having specific weight of 60-85 lb/ft3 - 961-1360 kg/m3 and flexural strength between approximately 750 and 1180 psi, contains: a continuous phase obtained from solidification of an aqueous mixture of the cement composition, wherein the cement composition contains (based on the dry base) 35-70 wt % reactive powder, 20-50 wt % light filler, 0% glass fibre and 0.5-5.0 wt % polyvinyl styrene fibre, wherein the continuous phase is reinforced with polyvinyl styrene fibres and contains a light filler which has particles with specific weight between 0.02 and 1.00 g/ml and average particle diametre from 50 to 250 mcm and/or particle diametre between 10 and 500 mcm, where the polyvinyl styrene fibres have diametre between approximately 10 and 400 mcm and length from approximately 0.1 to 1 inch (2.5-25.4 mm) and modulus of elasticity of 20-50 GPa. In another version, the reinforced light dimensionally stable panel has specific weight of 60-75 lb and the diametre of polyvinyl styrene fibres is between approximately 10 and 400 mcm. The method of making the said panel involves putting an aqueous composition of the cement composition into the mould for the panel, where the said mixture contains (based on dry mass) 40-95 wt % cement, wherein the continuous phase of the said composition is uniformly reinforced with polyvinyl styrene fibres and contains uniformly distributed light filler having particles with specific weight of 0.02-1.00 g/l, where the polyvinyl styrene fibres have diametre of 10-400 mcm, length of 0.1-1 inch (2.5-25.4 mm) and measured modulus of elasticity of 20-50 GPa, and hardening the aqueous mixture for moulding the panel. The invention is developed in subclaims.

Method of producing wood-slag composite / 2413703
Invention relates to production of construction materials and may be used in production of construction materials and wood-slag composites. In compliance with proposed method, wood wastes are treated in alkaline medium at 100°C for 1-2 h, wood waste-t-liquid glass weight ratio making 1:5.6-10. Produced bulk containing water soluble lignine is mixed for, at least, 0.1 h with cementing agent consisting of blast-furnace granulated slag pre-ground to surface density of, at least, 3100 cm2/g and cement. Mix thus produced is compacted and form is removed in 8-24 hours depending upon the quality of solidification agent.

Crude mixture for producing gypsum binder and articles from said binder / 2413688
Invention relates to the technology of producing building materials, more specifically to a crude mixture for producing gypsum binder and articles made from gypsum binder, which can be used in producing construction materials for making low- and medium-grade strength small pieces of wall blocks, partitioning slabs and lintel blocks. The crude mixture for producing gypsum binder and articles from gypsum binder contains the following in wt %: dihydrate of phosphogypsum 70-78, filler 19-27.5, unslaked lime 1.4-1.9, water - the rest. The crude mixture can contain dihydrate of phosphogypsum in form of wastes from production of wet-process phosphoric acid with natural specific surface area of 3500-4500 cm2/g and natural moisture content of 30-35%. The crude mixture can contain filler with specific surface area of 4500-5000 cm2/g in form of slag-ash wastes or blast-furnace slag, or screenings of gypsum or limestone chips.

Wood concrete mixture / 2412921
Invention relates to the industry of building materials, particularly to production of boards from wood-cement compositions used mainly in farm building. The wood concrete mixture contains cement, hogged chips, gypsum, lime and calcium chloride. The mixture also contains liquid glass, where components of the mixture are in the following ratio, wt %: cement 30-34; hogged chips 52-58; lime 4-5; gypsum 1-1.5; calcium chloride 1-1.5; liquid glass 5-7.

Procedure for preparing ballast material for underwater pipeline / 2412393
Procedure for preparing ballast material for underwater pipeline consists in mixing cement, filler, water and plasticiser to make mixture of specified density and flowability. As plasticiser there is used filler of big dimension from the group: barite or iron containing ore or their mixture. Also, mixing is carried out in two stages. At the first stage 10-20 wt % of said big dimension filler of its total amount is supplied into the mixer together with cement, water and plasticiser and mixed for 10-15 sec. At the second stage the rest filler of big dimension is supplied in equal batches with intervals of 10-15 sec, and it is mixed; the components are mixed till there is obtained a homogenous mixture.

Finishing composition / 2411205
Invention relates to construction materials and can be used finish concrete and plastered surfaces. The composition contains the following in wt %: air-slaked lime 14-16, styrene-acrylate dispersion Novopol 110 4-8, 11% sol solution of ortho-silicic acid H4SiO4 with pH=4-5 - 5-8, aggregate - loam soil with specific surface area S=5000 cm2/g 48-54, water - 18-23.

Composition for producing construction articles / 2411204
Invention relates to compositions for producing construction articles and can be used in the building industry. The composition for producing construction articles, which contains ground gypsum rock, magnesium oxide and water, also contains talc and synthetic fibrous filler, with the following ratio of components in wt %: ground gypsum rock 85-87, magnesium oxide 0.1-1.0, talc 0.3-2.0, synthetic fibrous filler 0.2-0.5, water - the rest.

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.