Concrete mixture. RU patent 2288198.

FIELD: production of concrete.

SUBSTANCE: concrete mixture comprises, in mass %, 20-22 of Portland cement, 43-44 of quartz sand, 3.5-5 of mineral fiber, and water.

EFFECT: enhanced cold-resistance and waterproofness.

2 tbl

IPC classes for russian patent Concrete mixture. RU patent 2288198. (RU 2288198):

C04B28/02 - containing hydraulic cements other than calcium sulfates

C04B14/38 - Fibrous materials; Whiskers

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:

Concrete mixture / 2282600
Invention relates to compositions of concrete mixtures containing polluting impurities in a filling agent and modifying additives. The concrete mixture comprising cement, filling agent with polluting impurities, water and modifying additive comprises ammonium chloride and urea as a modifying additive in the amount 0.05% and 0.45%, respectively, of the cement mass. Invention provides enhancing strength and resistance to cold of concrete mixtures comprising a filling agent with polluting impurities in the amount exceeding the standardized admissible values and excels necessity for washing filling agents. Invention can be used in manufacturing concrete and ferroconcrete articles and constructions used in road, industrial and civil building.

Dry building mix / 2278083
Invention relates to compositions of dry mortar mixes based on cement binder and mineral aggregate such as sand intended to prepare finishing mortars and manufacture cast-in-place floors. Dry building mix including cement (27-35%), sand fractions ≤0.63, 0.63-1.25, and 1.25-2.5 mm wherein proportion of each fraction is not higher than 37% of the total weight of sand, and superplasticizer C-3 (0.125-0.180%) further contains carbon white BS-120 in the same amount as superplasticizer (0.125-0.180%).

Heat-resistant superhighquality concrete, the method of its production and the bonding array for this concrete / 2274618
The invention is pertaining to the field of construction materials industry, in particular, to production of the fibrous concrete. The technical result of the invention is production of the superhighqualitative concrete characterized by the high refractory strength, the controlled rheological properties and the good mechanical properties. The invention characterizes the application of the organic fibers having a fusion point less than 300°C, the medial length exceeding 1 mm and the diameter of no more than 200 micron in the superhighqualitative concrete for improvement its refractory properties. At that the content of the organic fibers is such, that their size makes from 0.1 up to 3 % of the size of the concrete after is hardening, and the concrete in 28 days possesses the compression strength of no less than 120 MPa, the bending strength of no less than 20 MPa and the flow index in the not hardened state is no less than 150 mm. At that these values concern to the concrete being at 20°C, which consists out of the especially hardened cementing array, in which the metallic fibers are distributed. The invention also describes the heat-resistant superhighquality concrete containing metallic reinforcing fibers and the organic fibers ensuring the desirable properties, as well as the method of production of this concrete and the cementing array for the concrete.

Building composition and powdered additive for building composition (lignopan) / 2272008
In a building composition including (kg/m3) mineral binder (250-600), aggregate (1050-1900), water (120-300), and powdered additive containing Lignopan B1 in amount 0.25-0.45% of the weight of mineral binder, said additive further contains sodium thiosulfate and/or aluminum thiosulfate in amounts 5-11% of the total weight of additive. Mineral binder is selected from Portland cement, Portland blast-furnace cement, lime-silica binder, and gypsum cement-pozzolana binder. Aggregate can be selected from quartz sand with fineness modulus 2.0-3.0 and broken stone fraction 5-400 mm or 5-20 mm mixed with above quartz sand at ratio 1.4:2.0. Building composition is intended for use when preparing concrete or mortar mixes in manufacture of concrete and reinforced concrete parts and units of prefabricated or in-situ construction as well as in construction, operation, and repair of wells.

Concrete mixture / 2269499
Invention relates to composites of concrete mixtures used in making underground constructions, wall blocks, protecting and self-carrying building constructions and making walls made of monolith concrete in low building construction. Concrete mixture comprises cement, filling agent, superplasticizer C-3, hydrophobizing organosilicon liquid GKZH-94 and water. As a filling agent the mixture comprises the soil of natural moisture with sizes particle less 0.1 mm, total surface above 62 m2/kg and the content of clay particles 30%, not above, in the following ratio of components, mas. p. p.: cement, 1; indicated soil, 2-4; superplasticizer C-3, 0.01; GKZH-94, 0.001, and water, 0,4-0.5. Invention provides preparing concrete with decreased average density and water requirement, low heat conductive coefficient, enhanced strength, high resistance to cold, change of deficit and expensive large filling agent (granite, lime) for landmark materials and enhanced elasticity of concrete that can be used in low building construction. Also, invention provides the improved ecology properties of concrete.

Method for preparing dry building mixture / 2269498
Invention relates to a method for preparing dry building mixture and designated for using in industry of building materials. Method for preparing dry building mixture involves mixing cement, chalk, air-dry hydrate lime, building sand, additives - superplasticizer, vinylacetate ethylene glue, antifrothing agent, casein glue, polyvinyl acetate (PVA), carboxymethylcellulose (CMC) wherein cement is mixed preliminary with indicated additives, chalk, indicated lime for 2.5-3 min and then with a mixture of building sand of fraction 0.5-3 mm and crushed chamotte of class A of fraction 3 mm in the following ratio of components, wt.-%: cement, 23.0-60.0; chalk, 15.0; indicated lime, 3.0-8.0; indicated sand, 39.75-69.0; superplasticizer, 0.15-0.36; vinylacetate ethylene glue, 2.0; antifrothing agent, 0.1-0.15; casein glue, 0.1-1.5; PVA, 0.1-2.0; CMC, 0.1-2.0; indicated chamotte, 39.64 above 100%. Invention provides accelerating strength accumulation, enhanced waterproofness and durability of articles made on the base of proposed dry building mixture.

Dry building mixture / 2267466
Claimed mixture contains cement binder (Portland cement); mineral plasticizer (hydrated lime); filler; organic additive; antifreeze additive; wherein as filler limestone sand containing 90-95 mass % of CaCO3 and having particle size of 0.001-4.0 mm is used. Said limestone sand represents waste from calcium oxide production and according to grade size is taken in the next ratio (mass %): grade of 0.001-0.09 mm 1.4-9.9; grade of 0.09-0.80 mm 47.1-59.9; grade of 0.8-1.2 mm 11.3-21.4; grade of 1.2-2.00 mm 0.1-15.7; grade of 2.00-4.00 mm 0.1-20.8. As organic additive alkoxysilane, which represents redispersible hydrophobic agent. Additionally claimed mixture contains solid waste from soda ash production and active mineral filler. More particularly dry mixture contains (mass %): Portland cement 18.0-26.5; hydrated lime 0.001-8.000; limestone sand 68.300-73.797; active mineral filler 0.001-2.000; antifreeze additive 1.0-2.7; redispersible hydrophobic agent 0.05-0.50; waste from soda ash production 0.01-0.50. Alkoxysilane is a polymerization product of silane and polyvinyl alcohol and has bulk weight of 220-320 g/dm3. As active mineral filler active silica named as "carbon white" may be used, and as antifreeze additive sodium nitrite, or potash, or sodium formate, or mixture of calcium nitrate with urea in mass ratio of 2:1. Abovementioned solid waste from soda ash production has the next essentially constant composition (mass %): CaCO3 51-69; CaSO4 2-8; CaCl2+NaCl 2-7; Ca(OH)2 7-16; SiCO2 10-18. Dry mixture of present invention may be used at law temperature, namely from +3 to -25°C.

Cement-containing compositions and method of their application / 2266266
Proposed composition contains (i) Portland cement in the amount of at least 8%, preferably 10%; (ii) water soluble silicate in the amount of about 2%; (iii) water in the amount adequate for obtaining mass ratio of water to solids about 1.2:1; per cents are given for combined mass (i), (ii) and (iii). After mixing the components, viscosity is rather low for introduction of make-up water. Composition may contain (iv) pozzoulana in the amount of from 2 to 35 mass-% considered for combined mass (i), (ii), (iii) and (iv). Proposed composition is self-aligning cementing composition at accelerated picking-up of strength which may be transferred for at least 24 h after storage under static conditions.

Material for curb structure / 2258679
Invention relates to building of highways and can be used both for building and restoration of main traffic arteries. Material containing cement, 18-25%, sand, 60-70%, and water further contains 4-10% of rubber crumb: waste from mechanical rubber and/or tire industry having fraction within a range 0.06 to 3.00 mm.

Paving member / 2250882
Proposed paving member contains cement, sand, industrial wastes, plasticizing agent and water. Used as plasticizing agent is sodium alkyl sulfonate; comminuted rubber is used as industrial wastes (rubber and/or tire industry) at sizes of fractions of 0.06 to 3.00 mm; paving member contains additionally open-cut clay at the following composition, mass-%: comminuted rubber, 4-10; sand, 50-65; clay, 10-20; cement, 15-24; plasticizing agent, 0.1-0.3; water being the remainder.

Blend for manufacture of thermal silicate material / 2258682
Invention relates to manufacture of silicate building materials based on lime-silica binder and may be used for manufacturing thermal silicate articles. Blend contains, wt %: slaked lime 22-28, diatomite 26-35, nepheline slime 5-10, wollastonite concentrate including at least 90% fraction with needle size 80 μm, 26-35, and gypsum semihydrate 3-10, said wollastonite concentrate being wollastonite ore processing and concentration product.

Concrete containing organic fibers, dispersed in cement mortar (variants) / 2245858
Concrete containing solidified cement mortar with dispersed organic fiber is obtained by mixing of composition with water. Concrete also contains: (a) cement, (b) grained components, (c) fine dispersed puzzolane components, (d) at least one dispersing additive. Grained components (b) have particles of maximum size D not more than 2 mm, preferably not more than 1 mm. Fine dispersed puzzolane components (c) have elementary particles of size not more than 20 µm, preferably not more than 1 µm. Water content as reduced to mass of cement (a) and fine dispersed puzzolane components (c) is from 8 % to 25 %. Length of individual organic fibers I is at least 2 mm, and ratio of 1/⊘ is at least 20, wherein ⊘ denotes fiber diameter. Fiver volume is not more than 8 % of concrete volume after solidifying. Ratio R of average fiber length L and maximum size D of grained component particles is at least 5. Concrete tested to direct extension has ductility coefficient δ>1, preferably δ>1,25.

Silicate mixture / 2285681
Invention relates to a silicate mixture comprising water glass, modifying additive and quartz sand wherein it comprises potash and sodium silicofluoride as a modifying additive in the following ratio of components, wt.-%: water glass, 36.4-36.6; sodium silicofluoride, 7.25-7.3; potash, 1.2-1.85, and quartz sand, 54.5-54.9. Invention can be used in making bistable building materials and articles, for examples, mastics, pastes, articles of cellular structure. Invention provides enhancing the biological stability of compositions and retaining the sufficient strength.

Chemical additive for cement concretes and building mortars / 2284973
Additive suitable for use in cement concretes and building mortars contains, wt %: sodium chloride 60.0-75.0, potassium sulfate 0.001-0.012, calcium sulfate 0.005-0.025, magnesium sulfate 0.001-0.012, and balancing amount of industrial-grade lignosulfonates with content of reducing substances no higher than 8%. Amount of additive needed to be added is lower by 0.3-0.5% based on the weight of cement.

Method of preparing foaming agent and foaming agent prepared by this method / 2284308
Invention relates to preparation of building mortars using foaming agent based on animal-origin protein material and can be employed in manufacture of parts needed in construction of buildings from foamed concrete. In a foaming agent preparation method comprising hydrolysis of animal-origin raw material in presence of alkali to form extract, neutralization of extract with a strong acid, salitization of the strong acid and subsequent dehydration, neutralization of extract is followed by cooling and dehydration by way of mixing cooled extract with dispersant taken in weight proportion to extract between 1:20 and 1:100 and drying mixture to achieve moisture content not higher than 5%. It is advantageous to use dispersant with specific surface 350-1000 m2/m3. Such dispersant can be any mineral and/or organic substance showing dispersing and sorption properties: finely ground minerals, e.g. chalk; mineral fibers, e.g. basalt fiber; various silica-containing substances, e.g. microsilica, silica gel, white black, finely ground pane or packaging glass, finely ground clay; alumina-containing substances, e.g. α-corundum; titanium dioxide; zinc dioxide; as well as wood flour, textile dust, finely crushed rubber, and disintegrated woodworking and pulp-and-paper industry wastes, e.g. scope; and mixtures of dispersed substances, including those listed above.

Method for production of fine granular additive to be added to cement composite / 2283292
Method involves obtaining mixture including fine mineral component and surfactant solution; drying the mixture; dispersing thereof into fine granules. Mixture obtaining method involves making air-beaten foam of 10-35% surfactant solution, namely untreated sulfate soap; stabilizing thereof with liquid glass taken in amount of 15% of above solution mass; adding fine mineral component, namely microsilica, to the foam. Solution/ microsilica ratio is 1:0.09-1.2. The mixture is laid in moulds and dried under temperature of 20-110°C.

Phosphate material / 2278842
Invention relates to building materials, in particular, to phosphate material comprising ortho-phosphoric acid with density value 1.22-1.23 g/cm3 and, additionally, waste from foam concrete manufacture of autoclave hardening with density value D 600, the content of calcium hydrosilicates and calcium hydroxide 5-40 wt.-% in the following ratio of components, wt.-%: indicated waste of foam concrete manufacture, 75-80, and ortho-phosphoric acid, 20-25. Invention can be used in making building blocks. Invention provides the creature of new phosphate material of delayed seizing time and in waterproofing retaining.

Foamed material and method for production thereof / 2268248
Claimed material is obtained from raw mixture containing (mass %): liquid glass 87-94; gel-forming agent such as potassium bichromate (K2Cr2O7) 0.1-1.0; fine dispersed filler such as marble flour or hydroxyapatite 3-10; and water 1-2. Components are agitated in mixer for 2-5 min followed by granulation in aqueous solution of calcium chloride and aluminum chloride mixture taken in ratio of AlCl3:CaCl2:H2O = (1-2):88:370 mass pts, wherein said solution has density of 1300 kg/m3. Obtained liquid glass bead is dried at 80-90°C up to finished moisture of 35-38 % and fed into metal mould in amount sufficient to produce articles of desired density. Heat treatment in mould is carried out at variable temperature regimes, namely mould is heated to 600-700°C for 1 min; material is conditioned at 600-700°C for 5-7 min; quenched at 450°C for 1 min; and conditioned at 450°C for 15-20 min. Then mould is cooled to 40-60°C, broken down and finished article is taken out.

Raw mix and a method of production of a granular heat-insulation material / 2264363
The invention is pertaining to the field of construction materials industry, in particular, to production of porous artificial articles and may be used at production of the granular heat-insulation material - the especially lightweight filler for concretes of industrial and civil engineering. The technical result is exclusion from a constructional raw mix of boric acid, a decrease of power input due to exclusion of a phase of a preliminary thermal treatment of green granules, a decreased bulk density and an increased general porosity of the granular heat-insulation material. A raw mix for the granular heat-insulation material includes, in mass %: micro-silica - 41.37, a sulfate soap with concentration of 40 % in terms of a dry substance - 0.21, a solution of sodium hydroxide with concentration of 45,22 % in terms ofNa2O - 21.97, water - 36.45. The method of production of the granular heat-insulation material from the raw mix provides for preparation of a suspension out of components of the raw mix, its hydrothermal treatment at 80-90°C and an atmospheric pressure during 10-15 minutes, granulation and the following heat-treatment of the green granules at 350-400 °C during 10 minutes.

Flooring slab production method / 2263187
Method involves successive producing concrete, vented and water-proof layers and rolling on water-proof layer. On the first stage of flooring slab production concrete and vented layers are produced simultaneously from concrete mix separated into layers and including cement, water, superplasticizing admix, keramzit sand and keramzit filler taken in the following mass ratio: 76.37:48.53:1.00:114.53:285.89. On the second stage water-proof layer is made of organomineral mix including bitumen and limestone powder taken in mass ratio of 1.5:1. For lower and central vented layer production keramzit sand having 0.315 mm size and claydite granules having 10-40 mm size are taken. Limestone powder used for water-proof layer forming has size of not more than 0.14 mm.