Concrete mixture

FIELD: chemistry.

SUBSTANCE: concrete mixture contains, wt %: portland cement 24.0-26.0, expanded clay with particle size of 20-40 mm 10.0-15.0, haydite sand 41.4-47.1, superplasticiser S-3 1.0-1.5, sodium ethyl siliconate or sodium methyl siliconate 1.0-1.5, lavsan fibre cut into 10-20 mm pieces 0.1-0.15, water 15.0-17.0.

EFFECT: high strength of articles made from the concrete mixture.

1 tbl


The invention relates to the construction materials industry, in particular to the manufacture of concrete building blocks for low-rise construction.

Famous concrete mixture containing the wt.%: cement 21,3-24,2; clay 57,6-64,0; clay sand 8,6-17,8; expanded perlite sand 3,2-4,6; saponified rosin 0,001-0,0012; water [1].

The objective of the invention is to increase the durability of products derived from the concrete mixture.

The technical result is achieved by the fact that the concrete mix including Portland cement, lightweight aggregate, expanded clay sand, water, further comprises a superplasticizer C-3, ethylsilicate sodium or potassium methyl siliconate and sliced into segments 10-20 mm Mylar fiber, wt.%: Portland 24,0-26,0; expanded clay fraction 20-40 mm 10,0-15,0; clay sand 41,4-47,1; superplasticizer C-3 1.0 to 1.5; ethylsilicate sodium or potassium methyl siliconate 1.0 to 1.5; cut into segments 10-20 mm Mylar fiber 0,1-0,15; water 15,0-17,0.

The composition of concrete mixtures are given in the table.

composition No. 4
ComponentsContent, wt.%:
composition No. 1composition No. 2composition No. 3
The expanded clay (fraction 20-40 mm)10,012,512,515,0
Ceramsite sand47,142,642,641,4
Superplasticizer C-31,01,251,251,5
Ethylsilicate sodium1,01,5--
The potassium methyl siliconate--1,51,0
Cut into segments 10-20 mm Mylar fiber0,10,150,150,1
Water16,8 of 17.0of 17.015,0
The strength of concrete in compression at the age of 28 days, MPa4-54-54-54-5

In the concrete mixture used superplasticizer C-3, obtained on the basis of the condensation products of naphthalenesulfonate and formaldehyde [2].

The components are metered in the desired quantities and mix. Prepared concrete mixture is placed in a metal (pre-lubricated with mineral oil) shape and leave to set.

The source of information

1. SU 1276650, 1986.

2. Afanas'ev, A. A. Concrete work. - M.: Higher.HQ., 1991. - S. 29-30.

Concrete mix including Portland cement, lightweight aggregate, expanded clay sand, water, characterized in that it further comprises a superplasticizer C-3, ethylsilicate sodium or potassium methyl siliconate and sliced into segments 10-20 mm Mylar fiber, wt.%:

the clay fraction 20-40 mm10,0-15,0
ceramsite sand41,4 was 47.1
superplus is idicator S-3 1,0-1,5
ethylsilicate sodium or potassium methyl siliconate1,0-1,5
cut into segments 10-20 mm Mylar fiber0,1-0,15


Same patents:
Concrete mixture // 2537733

FIELD: chemistry.

SUBSTANCE: concrete mixture, which includes portland cement, expanded clay, haydite sand, water, further contains asbestos of 6-7 types, which is fluffed up in advance, gypsum binder, sodium methyl siliconate or sodium ethyl siliconate, with the following ratio of components, wt %: portland cement 26.0-30.0; expanded clay with particle size of 20-40 mm 46.0-48.0; haydite sand 5.0-8.5; asbestos of 6-7 types, which is fluffed up in advance, 0.5-1.0; gypsum binder 0.5-1.0; sodium methyl siliconate or sodium ethyl siliconate1.0-1.5; water 15.0-17.0.

EFFECT: high strength.

1 tbl

Concrete mixture // 2536535

FIELD: chemistry.

SUBSTANCE: concrete mixture contains, wt %: portland cement 18.87-21.34, expanded clay 41.13-41.56, superplasticiser LSTM 0.0312, thermal power plant fly ash 13.92-18.87, gas-forming additive PAK-3 0.022-0.025, iron-containing sludge - chemical production waste 0.10-0.50, water - the balance.

EFFECT: obtaining concrete with higher strength and low density.

3 tbl

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SUBSTANCE: charge for production of a porous filler comprises, wt %: montmorillonite clay 82.0-86.0, ground schungite sifted via a net with hole size of 2.5 mm 8.0-10.0, ground wollastonite sifted via a net with a hole size of 2.5 mm 6.0-8.0.

EFFECT: increased strength of a porous filler produced from charge.

1 tbl

Ceramic mass // 2531417

FIELD: chemistry.

SUBSTANCE: invention relates to the production of building materials and products, in particular to wall ceramic products, and can be applied in the production of ceramic bricks and stones. A ceramic mass includes easily fusible clay and carbonate-silicon zeolite-containing rock of a mixed mineral composition and flotation wastes of coal washing - coal slurries, and carbonate-silicon zeolite-containing rock is applied with a degree of milling less than 1 mm, with the following component ratio, wt %: easily fusible clay - 60-75; carbonate-silicon zeolite-containing rock - 20-25; flotation wastes of coal washing - 5-15.

EFFECT: reduction of an average density and heat conductivity, increase of the product durability and reduction of expenditures for burning.

1 ex, 4 tbl

FIELD: construction.

SUBSTANCE: method for producing lightweight ceramic heat-insulating building material, comprising mixture of pre-treated silica-containing component and alkaline component, homogenization of raw mixture, drying of the granulated raw mixture, grinding of dried granules and firing in metal moulds. At that, the preliminary treatment of silica-containing component is carried out at stone-separating rolls in order to remove strong impurities and activate the silicon dioxide, in the drying apparatus to achieve the humidity of 19-25% and in grinding device in order to achieve the maximum particle size of 1 mm. Diatomite o tripoli and/or flask, containing the active silicon dioxide is used as silica-containing component, mixture of caustic soda and soda ash in the ratio of 0.5-0.8/1 is used as alkali component. Mixing of silica-containing component and alkaline component is carried out in the mixer of periodic action, providing the content of mass fraction in dry raw mixture of caustic soda of 6-14% and soda ash of 6-15%. Homogenization of raw mixture is carried out by treatment in strew press with filtering grid with size of cells of 8-25 mm, and drying of granular raw material mixture is carried out in dryer drum until the humidity of 5-7% is achieved. Grinding of dried granules is performed until the achievement of maximum particle size of 3 mm, and firing of silicate mixture, obtained as a result of grinding, is carried out in metal moulds in oven by raising the temperature up to 650C with speed of 100-120C/hour, and up to maximum of 680-800C - with speed of 15-25C/hour with subsequent isothermal exposure at maximum temperature during 1-3 hours, cooling from the maximum temperature up to 600C is carried out with speed of 30-50C/hour and from 600 to 50C - with speed of 50-60C/hour.

EFFECT: reduction of energy costs and improvement of hygienic and sanitary conditions of production.

4 cl, 5 ex, 3 tbl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of construction materials, particularly, expanded-clay concrete to be used for production of reinforced concrete articles for building blocks. Proposed method comprises activation of 70% of tempering water by quick-action Portland cement and plasticising additive UP-4 in concrete mixer at 15 rpm for 1 min to get homogeneous suspension. Tempering water remainder is mixed with crushed haydite gravel, haydite and quartz sand with pre-activated tempering water for 0.5 minutes. Obtained haydite mix is subjected to two-step heat treatment at 60C in summer for 5 hours, in winter for 8 hours. Then, it is treated in secondary heat treatment chamber at 40C for 4 hours.

EFFECT: better placeability, higher strength, accelerated production.

2 tbl

FIELD: construction.

SUBSTANCE: composition of a haydite-concrete mixture includes, wt %: portland cement 18.87-21.34, haydite 41.13-41.56, superplasticiser LSTM 0.0312, fly ash of TPP 13.92-18.87, gasifying additive PAK-3 0.022-0.025, water - balance.

EFFECT: production of haydite concrete with higher strength and reduced density.

3 tbl

FIELD: construction.

SUBSTANCE: swollen perlite is used, which is first saturated with water, water that is not retained by a swollen perlite granule is filtered, the water-saturated perlite is mixed with gypsum, the produced mix is supplied into a die mould for further pressing, and pressed at 10 MPa at least.

EFFECT: increased strength of a finished product with increased time of mortar hardening.

2 cl

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SUBSTANCE: raw mix for making foam concrete includes, wt %: portland cement 35.0-37.0, foaming agent PB-2000 0.25-0.35, TPP ash 10.65-13.25, crushed foam glass of fraction 5-10 mm 20.0-25.0, mineral wool ground and sifted through sieve No. 2.5 1.0-1.5, haydite sand 5.0-7.0, water 21.0-23.0.

EFFECT: higher heat resistance of foam concrete produced from raw mix.

1 tbl

FIELD: construction.

SUBSTANCE: raw mixture contains the following components, pts. wt.: non-caking acid clay 58.0-61.0; expanded perlite ground to specific surface of 4500-5000 cm2/g 13.0-15.0; chalk stone 1.0-2.0; broken silicate glass ground to specific surface of 4500-5000 cm2/g 14.0-16.0; bentonite and/or kaolin 4.0-6.0; liquid potassium glass 4.0-6.0.

EFFECT: increase of product water-resisting property.

1 tbl

FIELD: construction engineering; manufacture of building structures.

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11 cl

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2 cl, 1 tbl, 4 ex

FIELD: manufacture of building materials.

SUBSTANCE: invention relates to manufacture of polystyrene-concrete parts for use in construction as wall and heat-insulating material. Manufacture of heat-insulation products comprises preparation of molding mix from Portland cement (60.0-65.6%), water, and granulated foamed polystyrene with loose density 10-20 kg/m3 (2.2-4.4%), molding, and heat treatment of products. Invention resides in that molding mix additionally includes microsilica (6.6-12.0%) and superplasticizer S-3 (0.6-0.66), starting mix Portland cement/microsilica/foamed polystyrene is first stirred for 2-3 min, then water containing superplasticizer is added, resulting mix is stirred for further 3-5 min and loaded into molding boxes. Molding involves vibrocompaction and pressing followed by unloading of products from molding boxes and heat treatment: 2 h at 15-25°C, 8 h at 40-60°C, and 1 h at 15-30°C.

EFFECT: reduced consumption of cement, improved placeability and moldability of mix, increased strength of products, and increased productivity.

2 tbl

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EFFECT: increased cement adhesion to polystyrene foam without application of toxic and expensive additives; decreased component number without losses of heat-insulating properties.

1 tbl

FIELD: building industry, in particular building materials.

SUBSTANCE: claimed method includes providing polystyrene/concrete mixture by blending of cement, sand, water, foamed polystyrene; formation by vibrocompaction; dismantling of forms and article conditioning. Plasticizer and pigment are additionally introduced into polystyrene/concrete mixture during blending. In formation step precursory vibrocompaction is carried out to produce compacted protective and ornamental cement/sand face layer with thickness not less than 0.3 mm. Then finished vibrocompaction under kentledge is carried out to accomplish desired geometrical sizes. Obtained article is hold in form under kentledge at 15-25°C for 24 h or more, and in total article is hold up to 5 days. Article back surface is heat treated to produce porosity in contact sites due to polystyrene volume contraction up to 10 % in contrast with original one.

EFFECT: article with controlled thickness of compacted protective and ornamental layer.

2 ex

Concrete mix // 2272013

FIELD: manufacture of building materials.

SUBSTANCE: object of invention are special refractory concretes based on Portland cement and slag aggregates, which concretes can be used in manufacture of heat assemblies operated under prolonged high-temperature and sharp temperature gradient conditions. Concrete mix contains 16-22% Portland cement, 10-20% alumina hydrate in the form of production waste, 28-36% sand slag-pumice fraction up to 5-20 mm, broken slag fraction 5-20 mm, 0.5-1.5% super-plasticizer S-3, and water, said alumina hydrate being waste coming from synthetic rubber production or from radio component plant, namely from manufacture of electrolytic condensers in the form of aluminum foil etching waste.

EFFECT: increased density due to filled hollows in porous aggregate with alumina hydrate or reaction product thereof with lime releasing on hydration of clinker minerals, increased residual strength after firing at 800°C, and increased heat resistance.

2 tbl

FIELD: manufacture of porous sound-absorbing ceramic bricks, tiles or slabs possessing high sound-absorbing properties in wide range of frequencies.

SUBSTANCE: proposed porous sound-absorbing article is made from porous ceramic material with communicating pores at specific gravity of 0.5-1.0; for obtaining such material, 100-200 parts by weight of at least one sintered material is added to 100 parts by weight of pearlite at grain diameter of 0.50-2.0 mm; sintered materials are selected from group containing ash dust, wollastonite, chamotte, slag, quartz, lava, stones or clay as basic material, 10-20 parts by weight of inorganic binder; then, mixture is sintered; pearlite particles make material porous since pearlite particles get surrounded with basic material and binder after sintering; communicating pores are formed between contact surfaces of particles. Specification gives characteristics of versions of porous sound-absorbing ceramic article and method of its production.

EFFECT: enhanced efficiency of sound absorption in wide range of frequencies.

45 cl, 3 dwg, 3 ex

FIELD: manufacture of building materials and articles; light-weight structural insulating concrete.

SUBSTANCE: proposed light-weight concrete contains cement, hollow micro-spheres - component separated by reagentless floatation from ash-and-slag mixtures and water; it additionally contains silicon opal-cristobalite mineral - tripolite of the following fractional composition, %: 0.315 - 0.14 mm 27-31.1, 0.14-0.071 mm 30.1-33.2 lesser than 0.071 mm 32.9-39.7 at the following ratio of components, mass-%: cement, 24.9-29.3; tripolite, 6.8-14.2; micro-spheres, 34.8-41.1; the remainder being water.

EFFECT: reduced density and heat conductivity.

5 tbl, 1 ex

FIELD: building materials, in particular polystyrene-concrete foam articles.

SUBSTANCE: claimed method includes mixture forming in the next component ratio (mass %): Portland cement 81.0; granulated foamed polystyrene 4.0, wherein three parts thereof have granule diameter of 1-2 mm, and one part has granule diameter of 2-3 mm; plasticizing additive 0.5; air-entraining admixture 0.02; and balance: water. For mixture production 2/3 of Portland cement, both additives and 1/2 of tempering water are charged into mixer and agitated for 2-3 min. Foamed polystyrene having granule diameter of 1-2 mm, is added and agitated for 1-2 min; remained cement, foamed polystyrene having granule diameter of 2-3 mm, and remained water are added and agitated for 2-3 min. Mixture is placed into curb, floated and conditioned at 20°C for 8 hours. Finished articles are laid in stacks for storage or hauling.

EFFECT: building articles of increased heat insulating properties, improved constructive characteristics and decreased average density; simplified technology.

1 tbl

FIELD: building materials, in particular heat insulating article production.

SUBSTANCE: claimed composition contains (mass pts): green vermiculite 1-1.05; mixture of hydrogen peroxide and sulfuric acid in volume ratio of 3:1 1-2,20; and artificial porous additive, namely expanded perlite 1-1,20.

EFFECT: heat insulating articles of increased strength.

2 tbl, 12 ex