Raw material mixture for concrete production
SUBSTANCE: raw material mixture for concrete production, which contains cement, a fine filler, a plasticising additive and water, additionally contains milled and sieved through net No. 10 mobile phone waste with preliminarily extracted accumulators with the following component ratio, wt %: cement 24-36; fine filler 12.7-17.9; plasticising additive 0.1-1.5; water 18-36; milled and sieved through net No. 10 mobile phone waste with preliminarily extracted accumulators 10-40.
EFFECT: safe utilisation of mobile phones.
The invention relates to the construction materials industry, in particular the production of concretes used in low-rise construction.
Famous raw mix for the production of concrete containing, wt.%: cement 35,0-39,0; fine aggregate 35,0-39,0; resin air entraining extraction-rosin 0,11-0,17; carboxymethylcellulose 0,05-0,07; plasticizing additive (superplasticizer C-3) 0,4-1,4; water - other .
The task of the invention consists in the safe disposal of spent mobile phones.
Technical result is achieved by the fact that the raw mix for the production of concrete containing cement, fine aggregate, and plasticizing additive, water, additionally contains crushed and sieved through sieve No. 10 of spent mobile phones with pre-extracted batteries in the following ratio, wt.%: cement 24-36; fine aggregate 12,7-17,9; plasticizing additive 0.1 to 1.5; water 18-36; crushed and sieved through sieve No. 10 of spent mobile phones with pre-extracted batteries 10-40.
The composition of the raw mix for the production of concrete is given in the table.
Cement mixed with fine (passing through mesh No. 5) filler, crushed and sieved through sieve No. 10 of spent mobile phones (batteries what s phones should be extracted), add water and plasticizing additive. The mixture is filled metal forms, maintain it in the form 12-24 h at 20-25°C, then the product (building blocks) is extracted from forms.
The compressive strength of concrete (aged 28 days), obtained from a raw mixture will be 10-15 MPa.
Sources of information
1. RU # 2237041, 2004.
Raw mix for the production of concrete containing cement, fine aggregate, and plasticizing additive, water, characterized in that it further comprises crushed and sieved through sieve No. 10 of spent mobile phones with pre-extracted batteries in the following ratio, wt.%: cement 24-36; fine aggregate 12,7-17,9; plasticizing additive 0.1 to 1.5; water 18-36; crushed and sieved through sieve No. 10 of spent mobile phones with pre-extracted batteries 10-40.
SUBSTANCE: raw material mixture for obtaining artificial stone includes, wt %: Portland cement 28-30, carbon silicides 26-29, iron oxides 1-1.5, water 28-30, cut into 5-15 mm segments asbestos fibre 1-1.5, quartz sand 11-13.
EFFECT: obtaining durable and ecologically safe artificial stone.
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 160°C. 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
SUBSTANCE: claimed invention relates to a concrete-expanding additive and to a method of obtaining thereof. Concrete with the said additive possesses higher stability in storage. The concrete-expanding additive is obtained by thermal treatment of a clinker or a powder-like clinker, which contains in wt.p. per 100 parts of the clinker free lime in an amount of 10-70, a hydraulic substance 10-50 and water-free calcium sulphate 1-50, in an atmosphere of gaseous carbon dioxide to form in it calcium carbonate. In the method of obtaining an expanding additive clinker, containing free lime, the hydraulic substance and water-free calcium sulphate are subjected to thermal processing to form in it calcium carbonate. The invention is developed in dependent items of the invention formula.
EFFECT: provision of considerable concrete expansion in the period from 2 to 7 days after laying, which makes it possible to develop high early compression strength.
9 cl, 7 tbl
SUBSTANCE: method of preparing the concrete mixture, consisting in mixing of cement, aggregates, water, and aqueous suspension of complex modifier of the following composition, wt %: silica fume 40-70; chemical additives 2-10; water - the rest, which is dried prior to mixing in the air stream to obtain powder consisting of granules, according to the invention, the aqueous suspension of complex modifier before mixing is subject to drying under the influence of continuous electromagnetic field of ultra-high frequency of 400-1000 MHz from microwave oscillators and heated air stream of microwave oscillator cooling to obtain powder with grains of size up to 500 microns and moisture of 9-12%; then the dried powdered complex modifier and cement are subjected to dispersion and disaggregation via exposure to pulsed electromagnetic field of ultra-high frequency of 1000-3000 MHz lasting 1-1.5 seconds, till the obtention of ultrafine powder of complex modifier with size of 60-100 nm, moisture of 1-8% and cement of size 0.1-5 microns, after that they are mixed, ground together and activated, form the disaggregated and activated mixture of cement and complex modifier, which is mixed with filler and water, concrete mixture is obtained; this mixture is subjected to the influence of powerful pulsed electromagnetic field of ultra-high frequency of 400-1000 MHz with duration of 1100÷nanoseconds.
EFFECT: increase of strength of concrete mixture.
SUBSTANCE: composition for producing structural materials, comprising mineral binder, filler, water and nanomaterials, characterised by that the mineral binder is cement M-500 and bentonite clays, the filler is aluminosilicate microspheres (Al2O3) with diameter of 5.0-500 mcm, and as nanomaterials, the composition further includes a microstructure of needle-like wollastonite filler MIVOLL-97, free of natural calcium metal silicate, and fractional microcalcite MICARB "STANDARD"-96 and a foaming agent PB-200, with the following ratio of components, wt %: bentonite clays 2.0-8.0, aluminosilicate microspheres with diameter of 5.0-500.0 mcm 3.0-25.0, MIVOLL-97 - 1.5-5.5, MICARB "STANDARD"-96 - 2.0-8.0, silicon nanostructures AEROSIL - 2.0-5.0, foaming agent PB-200 - 1.0-4.0, water - 3.0-15, cement M-500 - the balance.
EFFECT: obtaining a high-strength composition with improved processing properties structural materials, the present combination of ingredients of the composition is optimal and enhances positive working qualities thereof.
4 ex, 5 dwg
SUBSTANCE: invention relates to special concrete compositions and can be used in the industry of structural materials in producing radiation-proof concrete, including concrete for "dry protection" of a nuclear power plant reactor. The radiation-proof concrete composition contains inorganic binder, serpentinite chips with particle size of 5-20 mm, serpentinite peebles, water, the composition being characterised by that it further contains a superplasticiser, calcium oxide, magnesium oxide, barium oxide or mixtures thereof, with the following ratio of components, wt %: inorganic binder 5.0-20.0; serpentinite chips with particle size of 5-20 mm 31.0-55.0; serpentinite peebles 6.0-30.0; alkali-earth metal oxides 8.9-10.0; superplasticiser 0.1-1.0; water 4.0-8.0.
EFFECT: high quality of concrete as a result of improved workability and reduced demixing when applying the concrete mixture due to reduced water segregation and mortar segregation, as well as faster drying of the concrete.
2 cl, 1 tbl
SUBSTANCE: composite construction material comprising a cement binder, a filler, lignocellulose materials and an additive - a mixture of low molecular polyethylene and urea at the ratio of 1:1, additionally contains a non-ionogenic surfactant polyvinyl pyrrolidone at the following ratio of components, wt %: cement binder 20-30, filler 44-56, non-ionogenic surfactant polyvinyl pyrrolidone 0.5-2, lignocellulose materials 5-12, mixture of low molecular polyethylene and urea at the ratio of 1:1 0.5-3.5, water - up to 100.
EFFECT: development of a composite construction material to manufacture concrete products, making it possible to increase compressing strength, cone slump, tensile strength in bending, elasticity modulus and to reduce water absorption.
SUBSTANCE: invention relates to cement mortar with improved characteristics for formation of structures, which include synthetic fibres, in particular in form of interlacements, for strengthening of building constructions. Mortar includes methylmethacrylate/n-butylacrylate synthetic resin and glass fibres, dispersed in mortar. Invention also relates to method of strengthening of building constructions with application of said mortar. Invention is developed in dependent items of the invention formula.
EFFECT: strengthening of building constructions, increase of their resistance to unmixing.
9 cl, 2 dwg
SUBSTANCE: invention relates to a method of preparing a hardening accelerator composition by reacting a water-soluble calcium compound with a water-soluble silicate compound and a method of preparing a hardening accelerator composition by reacting a calcium compound with a silicon dioxide-containing component in an alkaline medium, in both cases the reaction of the water-soluble calcium compound with the water-soluble silicate compound being carried out in the presence of an aqueous solution which contains a water-soluble comb polymer suitable as a plasticiser for hydraulic binders. The invention also relates to a composition of calcium silicate hydrate and comb polymer, use thereof as a hardening accelerator and for reducing permeability of hardened mixtures.
EFFECT: obtaining a hardening accelerator having plasticiser properties, which is capable of increasing strength and wear resistance.
41 cl, 12 tbl, 3 dwg
SUBSTANCE: inventions relate to protection of substrates against corrosion. Claimed is dispersible redispersible or water-soluble mixture for reinforcing construction materials and protection against corrosion, based on, at least, one water-soluble organic polymer and, at least, one organic silicon compound, which contains, at least, one SiOSi-bond, with content of organic polymer constituting approximately from 40 to 80 wt % counted per the sum of organic polymer and organic silicon compound; and organic silicon compound, which contains, at least, one SiOSi-bond, is based on oligomeric mixture of alkylalkoxysiloxanes, which contains from 50 to 100 wt % of alkylalkoxysiloxanes and has oligomerisation degree mainly from 2 to 20, with oligomer mixture of alkylalkoxysiloxanes satisfying the overall formula I: (R")Si(OR"')xOy (I), where groups R" represent similar or different linear, branched or cyclic alkyl radicals with 1-18 carbon atoms, mainly methyl, ethyl, propyl, hexyl, octyl, hexadecyl; groups R"' are similar or different and represent hydrogen or linear or branched alkyl radical with 1-4 carbon atoms, mainly methyl, ethyl, propyl, and 1,0<x<2,0 and 0,5<y≤1,0, on condition that (2y+x)=3.
EFFECT: creation of substance for protection of materials against corrosion, which can be added to dry construction mixtures both in form of powder and in form of liquid preparation, storage stability, ecological friendliness, and absence of interaction or very insignificant interaction with hydraulically binding components.
18 cl, 4 tbl, 7 ex, 3 dwg
FIELD: construction engineering; manufacture of building structures.
SUBSTANCE: proposed method includes preparation of polystyrene concrete mix from binder, foamed polystyrene and water, molding articles from this mixture and heat treatment. Prior to preparation of mixture, foamed polystyrene is subjected to foaming performed at two stages as minimum. At two stages as minimum. At first stage, polystyrene gravel at density of 12-30 kg/cu m is obtained. At subsequent stages its density is brought to 6-11 kg/cu m; polystyrene gravel may be obtained by grinding wastes of articles made from polystyrene to grain composition of fractions to 1-15 mm. Introduced additionally into mixture is air-entrapping additive hardening accelerator and water-reducing additive which are thinned with water. Articles are molded by placing the mixture in metal molds. Mixture is fed to each cell of metal mold by means of hose by forcing it from pneumatic concrete mixer by compressed air. After heat treatment, metal molds containing articles are delivered to demolding station where are subjected to vibration treatment for separation of articles from molds. Then, articles are removed from metal molds. Line proposed for realization of this method includes foaming unit, service bins and proportioners for foamed polystyrene, binder and water, at least one pneumatic concrete mixer for preparation of polystyrene mixture and molding and demolding stations. Proportioners for aqueous solution of hardening accelerator, air-entrapping additive and water-reducing additive, service reservoirs for air-entrapping additive, hardening accelerator and water-reducing additive, screw feeder for delivery of binder to proportioner, vibration table, metal molds with covers, pipe lines with shut-off cocks and swivel chutes, control console and hose. Proportioner is located under service bin forming single reservoir which may be divided by mechanical splitter. Pneumatic concrete mixer is provided with horizontal shaft at volume of 0.6 to 2 cu m. Metal mold is provided with sump having hinged sides, partitions, cargo-gripping mechanism and cover located on sump of cassette. Each cassette is made in form of platform formed by horizontal square sheet and four vertical sheets rigidly secured on horizontal sheet, shifted relative to center axes and interconnected in T-shaped pattern perpendicularly relative to each other forming four cells over perimeter of platform and central cell. Cells over perimeter of platform have three free faces. Cargo-gripping mechanism is located in central cell partitions are mounted between cassettes and are pinched by two vertical sheets. Cover is made in form of metal sheet pressed to upper faces of cells, partitions and sides. According to second version, metal mold has sump and at least one cell heat-insulated articles. Each cell is formed by bottom of sump and two z-shaped profiles clamped together and provided with changeable inserts placed between z-shaped profile. Each z-shaped profile has two side and one central webs. Side surfaces of all webs are perpendicular to plane formed by sump bottom. Changeable inserts are secured on side webs of z-shaped profiles. Each z-shaped profile forms one of subsequent cells by its one cell.
EFFECT: extended technological capabilities; increased productivity; improved quality and enhanced reliability.
FIELD: production of building materials from architectural concrete.
SUBSTANCE: the invention is dealt with the field of production of building materials, in particular with facade decorative items made out of architectural concrete and with depth of relief of 10 - 20 cm. The technical result is improvement of quality of front face of items, decrease of labor input and specific consumption of materials to produce the items, improvement of quality of the form removal, reduction of the forms park. The method of production of the decorative front items made out of the architectural concrete includes preparation of concrete mix with water-cement ratio of 0.2 - 0.4 by milling of a binding substance with additives up to specific surface of 3000-5000 cm2/g and its mixings with a filler - sand, function additives and mixing water, forming as "a face downwards" by filling up the forms with the concrete mixture and vibrating, seasoning up to the concrete mixture achieves a form removal strength and a striking. The binding agent is produced by joint milling of Portland cement, a superplasticizer C-3 and the expanding additive at a ratio (in mass %): Portland cement - 80-97; C-3 - 0.5-2.0; the expanding additive - 2.5-18, intermix it with sand of the following fractional composition (in mass %): 2.5-5 mm -25-35; 0-2.5 mm - 50-60; 0-0.315 mm - 10-20, and forming is exercised in the form with a volumetric relief insert by vibration of a concrete mixture till the end of air bubbling. At milling the binding agent is added with a white pigment in amount of 0.3-5.0 %. Vibration operations are performed by the internal vibrator with a frequency of vibration of 200 Hz or by the vibrating table. In the concrete mixture they inject a function additive - moderator of solidification. After a striking they make furnishing of the front surface of an item by applying a filling putty of following composition (in mass %): binding agent - 25-30, sand of a faction of 0-315 mm -55-60, a water dispersion of a polymer 1-2, water - up to the water-cement ratio - 0.5-0.6. The form for production of the decorative front items out of the architectural concrete contains a casing and the relief lower die shaping the item surface and is supplied with fixing the relief lower die braces made in the form of rods or wedges and-or gussets, and-or plates and caving inserts. At that the casing is heavier than the lower die with an item. The caving inserts and braces are made from the laminated veneer or gypsum, or metal. The casing may have the form of a box made out of concrete or gypsum, either out of a sawdust concrete, or out of magnesian binder and sawdust.
EFFECT: the invention ensures improvement of quality of front face of items, decrease of labor input and specific consumption of materials to produce the items, improvement of quality of the form striking, reduction of the park of the forms.
11 cl, 14 dwg, 1 tbl
FIELD: electrically conducting composite material useful as electric heating element.
SUBSTANCE: claimed material contains high-early-strength cement as a binder, colloidal graphite as an electrically conducting component, and antiplastic substances (e.g. chamotte, diabase, quartz sand or mixture thereof) as temperature-stabilized filler.
EFFECT: material useful as electric heating element operating at high temperature without losses of physical characteristics.
18 ck, 8 dwg, 4 tbl, 1 ex
FIELD: building materials.
SUBSTANCE: fibrous concrete composition contains cement binder, filler, reinforcing fibrous component and water. Said reinforcing fibrous component is beforehand treated in low-temperature glow discharge plasma of alternate current under the pressure of 50-250 Pa, current of 1.0-2.2 mA/cm2 for 20-60 sec.
EFFECT: increased bending strength, compressive resistance, and shock strength.
FIELD: concrete composition, cement modified with additive and additive for concrete mixture.
SUBSTANCE: claimed additive contains (mass parts): Lignopane with molecular weight of 10-50 kDa 78-82; silicone waterproofing agent (antifoaming additive 139-282) 0.4-0.5; and additionally sodium carbonate 3-5; sodium sulfate 3-5; nitriletrimethyl phosphonic acid 5-10; superplasticizer 0-10. Additive content is 0.15-0.8 % calculated as cement mass. Concrete mixture may comprise (kg/m3) cement 300-500; filler 1590-2030; water 105-190; coarse filler (chip and/or gravel of grade 5-20 mm or 5-40 mm) and/or fine filler (sand of fineness not more than 5 mm). As fine filler at least one component selected from group containing quartz sand, sand from igneous formation, sand from metamorphic formation, haydite sand, and sand from blast-furnace dross is used. As coarse filler at least one component selected from group containing chip from igneous formation, chip from metamorphic formation, chip from sediment, chip from blast-furnace dross, etc. is used. Composition of present invention is useful in building industry for production of monolith and precast concrete and reinforced concrete construction, etc.
EFFECT: concrete mixture of high flow storability.
9 cl, 2 tbl
FIELD: manufacture of building materials.
SUBSTANCE: quick-hardening bound cement mortar including, vol parts: cement 6-9, water 2-3, aqueous epoxide resin dispersion 1, and hardener 1, said cement being of quick-hardening type and said dispersion additionally containing polyurethane rubber. Quick-hardening cement can be alumina-based cement. In a method of preparing quick-hardening bound cement mortar including mixing cement with aqueous epoxide resin dispersion and hardener on a surface immediately before underwater application, one volume part of water is diluted with one volume part of hardener and stirred, after which one volume part of aqueous dispersion of epoxide resin and polyurethane rubber are added, resulting mixture is agitated and then, depending on particular application, 1 or 2 vol volumes of water are added and, after agitation, resulting composition is used to temper quick-hardening cement, and stirred in low-speed mixer until soft plasticine-type plastic homogenous mass is obtained, after which mortar is held up to 5 min and agitated once more. Escort method of repairing concrete and reinforced concrete underwater structures comprises conveying quick-hardening cement mortar into underwater repair operation zone and manually laying thus prepared mortar onto prepared surface with defective spots. Conveyance of mortar can be accomplished by means of containers or buckets, or yet by means of worm mortar pumps. Invention enables preparation of repair material characterized by dimensional stability, short setting time and fast hardness development, non-diffuseness in aqueous media, waterproofness, frost resistance, crack resistance, resistance to corrosive media (salt and alkali solutions, petroleum products), high adhesion to cement, concrete, and metallic surfaces, and not leading to corrosion of hardware.
EFFECT: improved performance characteristics of cement mortar.
FIELD: high-way engineering; building of side-walks and squares.
SUBSTANCE: 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.
EFFECT: enhanced frost resistance atmosphere resistance and anti-glaze parameters.
1 tbl, 5 ex
FIELD: road-building materials.
SUBSTANCE: 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.
EFFECT: improved strength and shockproof characteristics, atmosphere and frost resistance, and resistance to corrosive media.
1 tbl, 5 ex
FIELD: setting liquid cementing compositions remaining liquid within period of time required for use in flexible container for forming shaft lining.
SUBSTANCE: 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.
EFFECT: low cost of composition; enhanced stability to sedimentation.
11 cl, 5 tbl, 5 ex
FIELD: building industry, in particular building materials based on mixed lime/cement binders useful in preparation of building mortars.
SUBSTANCE: 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.
EFFECT: dry building mixture of increased frost resistance, high adhesiveness to substrate and high water-retaining ability.
5 cl, 1 tbl