Complex organic-mineral additive for concrete

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

 



 

Same patents:

FIELD: construction.

SUBSTANCE: wood concrete mixture contains cement, wood filler, water and suspension of cellulose fibres in the form of paper waste in water, which is treated in a vibration cavitation homogeniser with a rotating working element - rotor with a perforated surface and a fixed working element - stator; at circumferential rotation speed of the rotor of at least 20 m/s. Treatment in the vibration cavitation homogeniser is performed during 5-15 minutes till homogenous mass is obtained at the following component ratio, wt %: cement 15-45, suspension of paper waste 3-11, saw dust 1-10, and water is the rest.

EFFECT: improving flowability and laying ability of wood concrete mixture due to plasticising action of cellulose fibres used as one of the ingredients; simplifying a manufacturing method of finished products.

2 cl, 1 tbl

FIELD: construction.

SUBSTANCE: raw mixture for manufacture of concrete contains the following components, wt %: cement 20.0-40.0; filler 20.0-64.0; composite reinforcement bars cut into 5-30 mm pieces 1.0-20.0; water 15.0-20.0.

EFFECT: increasing strength of concrete.

1 tbl

FIELD: construction.

SUBSTANCE: plasticising additive to a concrete mix comprises aqueous solution of technical pentaerythritol, 40% aqueous solution of sodium polyacrylate. The mass ratio of the specified sodium polyacrylate and pentaerythritol is 100:1. The specified components in the additive are contained in the form of a compound.

EFFECT: increased mobility and accelerated concrete hardening in wide range of temperatures, including negative, higher concrete strength and prevention of corrosion of metal reinforcement.

3 tbl

FIELD: construction.

SUBSTANCE: concrete superplasticising admixture comprising water solution of sodium polyacrylate in addition contains the preparation Athos-300 of B type and technical pentaerythritol with the weight (by solid) ratio of sodium polyacrylate, Athos-300 of B type and pentaerythritol 100:10:1, and the named components are used in the form of complex compound.

EFFECT: increase of mobility and accumulation of strength of commodity concrete in the wide range of temperatures, including negative ones, and prevention of corrosion of metal fittings.

3 tbl

FIELD: construction.

SUBSTANCE: in preparation method of Portland cement binding agent with addition of high-lime ash of thermal power plants, including the combined melting of active mineral additive, Portland cement clinker, gypsum stone, domain granulated slag, their mixing, addition of high-lime ash into the binding agent are carried out at the moment of preparation of concrete or solution mixture within the ratio of 10:90 - 50:50. Invention is developed in the dependent claims of definition of the invention.

EFFECT: reduction of energy consumption without reduction of strength and without increase of deformation of expansion.

3 cl, 2 tbl

FIELD: construction.

SUBSTANCE: raw mixture for production of concrete contains, wt %: cement 20.0-25.0; fine aggregate 20.0-40.0; plasticizing agent 0.1-1.5; water 15.0-25.0; used printed-circuit boards crushed and sieved through the mesh No. 5 9.9-39.5.

EFFECT: safe disposal of printed-circuit boards when obtaining the required strength.

1 tbl

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used for construction of an earth bed and a facility of reinforced road bases on roads of categories I-V in road climatic zones II-V, as well as pavements on roads of categories IV-V as material for construction of earth bed fills and reinforcement of soil bases of construction and other sites. Road-building material containing drilling sludge with density of 1.3 to 1.8 kg/dm3 and with humidity of 30%, cement as the main binding material in the amount of 5-15% of the weight of the mixture, wastes of thermal utilisation of oil sludges (ash slag) with density of 1.2 to 1.6 kg/dm3 in the amount of 30-40% of the mixture weight, mineral filler and a sorbent - complexing agent, where organic fibrous (peat) sorbent is used as the sorbent - complexing agent in the amount of 2-4% of the mixture weight; Portland cement is used as cement; additionally, it contains liquid glass or organohydride-siloxanes, and sand is used as filler, with that, content of sand as a part of material is 5, or 10, or 30 wt %. The invention is developed in subclaims of formula of invention.

EFFECT: reduction of cement consumption; improvement of environmental situation due to utilisation of wastes of drilling and an ash and slag mixture.

4 cl, 4 ex, 7 dwg

FIELD: construction.

SUBSTANCE: raw mixture for production of concrete contains, wt %: Portland cement 18-28; fine aggregate 29.9-38.5; plasticizing agent 0.1-1.5; water 12-26; used calculators crushed and sieved through the mesh No. 5 with previously extracted from them storage batteries 16-30.

EFFECT: safe disposal of the used calculators, while maintaining the strength characteristics of concrete.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to an admixture for a cementitious composition comprising microfibrillar cellulose and/or a derivative thereof. The invention also relates to a method of manufacturing said admixture and to the use of the microfibrillar cellulose and/or a derivative thereof in the concrete admixture. The invention further relates to a cementitious composition comprising said admixture and methods of manufacture and use thereof. A cement admixture, wherein the admixture comprises microfibrillar cellulose; and/or a derivative thereof; and/or labile chemically modified cellulose pulp or cellulose raw material which forms microfibrillar cellulose during the use of the admixture; and optionally water, wherein the microfibrillar cellulose is obtained from raw material comprising plant material. A method of manufacturing a cement admixture comprising providing microfibrillar cellulose and/or a derivative thereof, mixing together said microfibrillar cellulose and/or a derivative thereof, and optionally water, adding at least one plasticiser and/or dispersing agent prior to, during or after providing microfibrillar cellulose to obtain said admixture. The invention is expanded in dependent claims.

EFFECT: paste thixotrophy is increased, water bleeding diminished and concrete durability properties are increased.

22 cl, 16 dwg, 7 tbl

FIELD: technological processes.

SUBSTANCE: invention relates to piping, namely, to materials applied onto the outer surface of pipes as a protective weighting coating. In the method to manufacture a protective weighting concrete coating of a pipeline, including mixing of cement, filler, plasticising additive and water, injection of the produced mix into the annular space created by the outer surface of the pipeline and a leave-in-place form installed on it with a gap, hardening of the produced coating, portland cement is supplied for mixing with account of its content in the mix from 8.8 wt % to 20.0 wt %, water is introduced in terms of water to cement ratio from 0.31 to 0.63, plasticising additive supplied for mixing is a plasticising agent and a defoaming agent in the amount of 1.0 kg/m3 to 3.0 kg/m3, the filler supplied for mixing with grain size not exceeding 10 mm is selected from barite or iron-containing ore, or gabbrodiabase, or granite in the mixture or separately, at the same time components are mixed to produce a mix having a flow index measured by flow equal to 55 - 75 cm, and the index of air content from 1% to 4% of the volume. The invention is developed in invention claims.

EFFECT: provision of density of a protective concrete material within 2600 - 3400 kg/m3.

3 cl, 2 tbl

FIELD: construction.

SUBSTANCE: plasticising additive to a concrete mix comprises aqueous solution of technical pentaerythritol, 40% aqueous solution of sodium polyacrylate. The mass ratio of the specified sodium polyacrylate and pentaerythritol is 100:1. The specified components in the additive are contained in the form of a compound.

EFFECT: increased mobility and accelerated concrete hardening in wide range of temperatures, including negative, higher concrete strength and prevention of corrosion of metal reinforcement.

3 tbl

FIELD: construction.

SUBSTANCE: concrete superplasticising admixture comprising water solution of sodium polyacrylate in addition contains the preparation Athos-300 of B type and technical pentaerythritol with the weight (by solid) ratio of sodium polyacrylate, Athos-300 of B type and pentaerythritol 100:10:1, and the named components are used in the form of complex compound.

EFFECT: increase of mobility and accumulation of strength of commodity concrete in the wide range of temperatures, including negative ones, and prevention of corrosion of metal fittings.

3 tbl

FIELD: construction.

SUBSTANCE: complex plasticising additive for the concrete mixture, containing the polyelectrolytes of anionic type based on water-soluble carboxylate polymers, also comprises polyelectrolyte of cationic type based on one of a number of water-soluble amino-substituted polymers: polidimetildiallil ammonium chloride, the product of polymerisation of etilhlorgidrine with dimethylamine and chitosan at the following ratio of components, wt %: polyelectrolytes of anionic type 18-30, polyelectrolytes of cationic type 2-15, water - the rest up to 100%.

EFFECT: increase of preservation ability of the concrete mixture mobility at least during three to four hours and increase of the concrete strength.

3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a powdered composition of a construction material, preferably dry mortar for industrial production, and especially to tile adhesives, joint filler, putty, waterproofing slurry, repair mortar, levelling mortar, reinforcing adhesives, adhesives for heat-insulation composite systems, mineral plaster, fine putty and seamless floor systems, which contains an ester of A) 2-ethylhexanoic acid and B) an alcohol with a boiling point of at least 160C. Further, the invention discloses the production of said products, as well as use of esters according to the invention in powdered compositions of construction materials for reducing dust formation. The invention is developed in subclaims.

EFFECT: reducing dust formation, reducing the degree of release of organic compounds during storage and use of construction materials.

14 cl, 1 tbl

FIELD: construction.

SUBSTANCE: dry building mixture for monolithic-type building construction, which includes Portland cement, alumina cement, hydrated lime, gypsum, quartz sand, filler, re-dispersed polymer, cellulose ester, antifoaming additive, superplasticising agent, hardening agent, retarding agent, contains bauxite cement as alumina cement, hemihydrate plaster as gypsum, quartz sand with fineness modulus of up to 1.2, filler with specific surface area S sp 2.5-2.8 cm2/g, which contains 5-7 wt % of nanoparticles, polycarboxylate superplasticising agent and in addition high-molecular chitosan at the following component ratio, wt %: Portland cement - 12-33, bauxite cement - 12-19, hydrated lime - 0.3-0.5, hemihydrate plaster - 2.5-6, quartz sand with fineness modulus of not more than 1.2 - 30-50, the above filler - 5-18, re-dispersed polymer - 4-6, cellulose ester - 0.1-0.17, antifoaming additive - 0.1-0.3, polycarboxylate superplasticising agent - 0.2-0.3, hardening agent - 0-0.5, retarding agent - 0-3.5, high-molecular chitosan (200-250 kDa) - 1-2 wt % of Portland cement weight.

EFFECT: increasing sedimentation stability of water-based building mixture; improving impact strength and reducing abrasion of hardened mixture.

4 ex

Complex additive // 2519313

FIELD: construction.

SUBSTANCE: complex additive for gypsum-cement-pozzolan binder contains a superplasticiser that moderates setting - plasticiser BEST-TB and carboxylate polyether Odolit-K at the following ratio of components, wt %: plasticiser BEST-TB 25-75; carboxylate polyether Odolit-K 25-75.

EFFECT: moderation of kinetics of initial structure formation of gypsum-cement pozzolan systems with preservation of their high end strength, increased coefficient of softening.

1 ex, 1 tbl

Jointing mix // 2519008

FIELD: construction.

SUBSTANCE: jointing mix containing portland cement, slaked lime, limestone, cellulose ether, starch ether and plasticiser, additionally contains red mud washed from alkali and dried, and the plasticiser is vinyl acetate copolymer with vinyl versatate at the following ratio of components, wt %: portland cement 30-33, slaked lime 1.5-2.0, limestone 60-65, cellulose ether 0.15-0.20, starch ether 0.01-0.02, copolymer of vinyl acetate with vinyl versatate 1.0-1.5, red mud 0.3-5.0.

EFFECT: no efflorescence in process of joint hardening between construction ceramic parts and in process of operation.

1 tbl

Concrete mixture // 2514060

FIELD: chemistry.

SUBSTANCE: invention relates to compositions of a concrete mixture and can be used in construction when making high-quality prefrabricated concrete or reinforced concrete articles and structures. The concrete mixture contains the following, wt %: portland cement containing more than 16% grains with average diameter of less than 3 mcm, containing grinding intensifier InCem E500 in amount of 0.0365% of the mass of portland cement 15.28-16.49; said with fineness modulus of 2.1 29.67-29.95; crushed stone of the fraction 5-20 48.53-48.64; Sika Viscocrete 20 Gold additive 0.061-0.066; water - the balance.

EFFECT: high strength of concrete aged 10 to 12 hours, which enables to lower the temperature of isothermic ageing of the concrete during steam curing when making prefabricated concrete or reinforced concrete.

1 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a mixture of at least one polyol and at least one cyclohexane polycarboxylic acid derivative for reducing or minimising the dust emission when handling pulverulent construction chemical products, a method for preparing pulverulent construction chemical products and hydraulically setting materials containing the mixture according to the invention. The invention is developed in subclaims.

EFFECT: high efficiency of dust removal.

15 cl

FIELD: chemistry.

SUBSTANCE: invention relates to application of derivatives of cyclohexanepolycarboxylic acids for reduction or minimisation of dust emission in operating powder-like building chemical products, methods of obtaining powder-like building chemical products, and hydraulically binding materials, which contain derivatives of cyclohexanepolycarboxylic acids in accordance with the invention.

EFFECT: increase of dedusting efficiency.

28 cl, 5 ex, 3 tbl

FIELD: construction.

SUBSTANCE: dry construction mixture comprises portland cement, silica sand with fineness module equal to 0.95-1.1 and filler. What is new is that it contains the ferric hydrate cake as the filler - non-ferrous metal waste, ground to the fineness module of 0.90-0.95, at the following ratio of components, wt %: Portland cement 25-27, the mentioned ferrous hydrate cake 20-30; the mentioned quartz sand - the rest.

EFFECT: increase of water-holding capacity, improved heat engineering indexes by reducing the density, increased strength, application of cakes in dry construction mixtures expands the range of raw materials, saves natural resources, required for manufacture of building lime, improved environmental situation by reducing the emission of industrial wastes into the environment.

3 tbl

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