Raw material mixture for preparation of corrosion-resistant alkali-ash concrete

FIELD: chemistry.

SUBSTANCE: invention relates to industry of construction materials and can be used in production of building products and constructions. Raw material mixture for preparation of corrosion-resistant alkali-ash concrete includes binding agent, consisting of liquid glass with silicate modulus n = 0.8-1.2 and density ρ = 1.36-1.40 g/cm3 and produced from ferroalloy production waste - microsilica, containing 13 wt % of admixtures, characterised by true density ρt = 2200-2430 kg/m3 and loss on ignition 1.5-3.1%, and field I fly ash, obtained in combustion of brown coal of KAFEC at Bratsk city TPP-7 and characterised by true density ρt = 2120-2290 kg/m3 and 8-10.5% residue on sieve No. 8, and as filling agent - non-milled dump ash-and-slag mixture, which contains 9% of dump ash with particle size 0.14 mm and smaller and 91% of slag, with grain size, characterised by coarseness modulus Mc = 3.5 with ratio of fraction grains, %: fr. 5 mm 13.0, fr. 2.5 mm 21.5, fr. 1.25 mm 16.0, fr. 0.63 mm 27.5, fr. 0.315 mm 13.0, fr. 0.14 mm and smaller 9.0, with true density ρt = 2520-2730 kg/m3, loss on ignition 7.3-10.4% and breakability strength 15% with the following ratio of raw material mixture components, wt %: said I field ash 20.2-21.3, said liquid glass 14.8-19.2, said non-milled ash-and-slag mixture 60.6-63.9.

EFFECT: increase of corrosion resistance.

1 tbl

 

The invention relates to the construction materials industry and can be used in the manufacture of building products and structures from corrosion resistant concretes on the basis of ash-slag filler and helps to ensure the possibility of effective use of large-tonnage waste industry.

Famous concrete mixture comprising a binder, consisting of ground to a residue on the sieve No. 008 - 3,3% moldboard ash mixture and liquid glass of silica fume and aggregate - whether otvalnuyu ash-slag mixture having a grain size of 0.14-5.0 mm [RF Patent №2181706, 2002].

The disadvantage of such mixtures is insufficient corrosion resistance, which limits the use of the resulting concrete.

The closest analogue to the invention is described raw material mixture comprising a filler - otvalnuyu ash-slag mixture Irkutsk thermal power station-6 Bratsk with bulk density ρn=1300 kg/m3and having a grain size 0,315-10.0 mm, and a binder consisting of fly ash II field Irkutskaya CHPP-7, Bratsk and carbon-containing liquid glass, made of large-tonnage waste ferrosilicon production at Bratsk Ferroalloy plant - microsilica containing finely dispersed carbon impurities, with silicate module n=1-2 and density ρ=1,35-1,40 g/cm3[Patent RU No. 232987 C1, SW 28/26, SW 111/23, 27.07.2008, 4 p.].

The disadvantage of the described raw material mixture is insufficient morosina durability of the resulting concrete, and also use as the main component of fly ash II field, the volumes of which are small.

The problem solved by the invention is to improve the quality of the raw material mixture, expanding the range of raw materials.

The technical result - improving the corrosion resistance of concrete.

Said technical result of the invention is achieved in that the raw material mixture for the preparation of corrosion-resistant salewelcome includes concrete filler and a binder comprising silica-alumina component and the alkaline component is sodium silicate with silicate module n=0.8 to 1.2 and a density of ρ=1,36-1,40 g/cm3and manufactured from waste Ferroalloy production - microsilica containing 13 wt.% impurities, characterized by the true density ρand=2200-2430 kg/m3and loss after calcination 1,5-3,1%; aluminosilicate component comprises fly ash I field generated by burning brown coal KATEK at CHPP-7, Bratsk and characterized the true density ρand=2120-2290 kg/m3and the residue on the sieve No. 008 - 8-10,5%, and the filler used whether otvalnuyu ash-slag mixture comprising n� 9% from waste ash with a particle size of 0.14 mm or less, and 91% - of slag, grain size, characterized by the fineness modulus of MK=3.5, with a ratio of grain fractions, %:

FR.5 mmOf 13.0
FR.2.5 mmA 21.5
FR.1.25 mm16,0
FR.0,63 mm27,5
FR.0,315 mmOf 13.0
FR.0.14 mm and less than9,0

the true density ρand=2520-2730 kg/m3the loss after calcination at 7.3-10.4% and strength for divisibility by 15% in the following ratio of components of the raw material mixture, wt.%:

This ash I fieldOf 20.2 to 21.3
Specified liquid glass14,8-19,2
Specified whether ash-slag mixture60,6-63,9

Raw mixture for making concrete was prepared as follows.

Fly ash I field produced by combustion in CHP plants brown coal KATEK and characterized by a bulk density of ρn=1030 kg/m3true PL�the density ρ and=2120-2290 kg/m3and the residue on the sieve No. 008 - 8-10,5%, mixed with different types of moldboard ash mixture, characterized by a bulk density of ρn=1120 kg/m3the true density ρand=2520-2730 kg/m3and humidity of 1.3%, in the ratio of Ash I field: Whether moldboard ash mixture" = 1:3. The properties of fly ash are presented in tables 1, 2, and the properties of moldboard ash mixture in tables 3-5.

Table 1
The properties of fly ash generated at CHPP-7, Bratsk
Bulk density, kg/m3True density, kg/m3The residue on the sieve No. 008, %Humidity, %Loss after calcination (p. P. P.), %
10302120-22908-10,50,53,4

Table 2
The chemical composition of fly ash generated at CHPP-7, Bratsk
The contents of ACS�Dov, wt.%
SiO2Al2O3Fe2O3CaONa2OK2OSO3MgO
46,626,98,812,70,20,61,62,3

Table 3
Properties moldboard ash mixture formed at CHPP-6 Bratsk
Bulk density, kg/m3True density, kg/m3Humidity, %Strength for divisibility (Dr), %Loss after calcination (p. P. P.), %The fineness modulus of (MK)
11202520-27301,3DrThe 7.3 and 10.43,5

Table 4Granulometric composition of moldboard ash mixtureResidues on sieve, %The sizes of sieves, mmfor slagfor ash52,51,250,630,3150,14<0,14privateOf 13.0A 21.516,027,5Of 13.03,55,5fullOf 13.034,550,578,091,094,5100

Table 5
The chemical composition of the moldboard ash mixture
View of ash-slag wasteMass content, %
SiO2Al2O3Fe2O3R2OSaototalSaoStMgOSO3
ash-slag mixture48,08,66,70,626,46,42,90,4
the ash component of the ash-slag mixtureOf 40.38,66,50,829,69,43,80,9
the slag component of the ash-slag mixtureTo 66.37,95,33,814,0-2,1,7

A mixture of dry ingredients kneaded with liquid glass from silica fume, characterized by a bulk density of 280 kg/m3the losses after prokalivaniya of 1.5-3.1% and the presence of 13 wt.% of impurities. The silicate modulus of liquid glass n=0.8 to 1.2, and its density ρ=1,36-1,40 g/cm3. The mixture was mixed in a forced action mixer for 2-3 min. Molding samples-beams of size 4×4×16 cm were carried out on a laboratory shaking table. Hardening of the samples was carried out in the chamber of steam curing at a temperature of 95±5°C for 8.5 hours. Then parboiled samples were tested. For this purpose one part of the samples was placed in a corrosive environment and the other in the water. As aggressive environments were chosen solution of sulfuric acid and 3% concentration, chlorine analit, machine oil. Acid resistance of the material was assessed by coefficient of resistance (Kwith):. The test results are shown in table 6. Similarly were prepared and tested samples of other compositions. The results are presented in table 6.

The analysis of the data shows that based on the proposed raw mix possible to obtain corrosion-resistant concrete. In all cases, the coefficient of resistance is more than 1. Moreover, the corrosion resistance of the proposed material you�e indicators prototype, since it has a high value of the coefficient of resistance not only in the mineral solution (sulfuric acid), but in salt (chloride Analyt), and in organic medium (lubricating oil). In addition, as the main component in the proposed raw material mixture used fly ash I field, the volumes of which exceed considerably the amount of fly ash II field used in the raw material mixture according to the prototype.

Table 6
The test results
No.
p/p
The properties of liquid glassProperties of silica fumeThe properties of fly ash I fieldThe properties of ash and slag mixtureThe mixture composition, wt.%The corrosion resistance of the samples (COP)
Silicate moduleDensity, g/cm3True density, kg/m3Loss after calcination, wt.% True density, kg/m3The residue on the sieve No. 008, %True density, kg/m3Loss after calcination, wt.%AstringentAggregate - whether ash-slag mixture
The aluminosilicate component is fly ash I fieldAlkaline components - a liquid crystal of silica fume3% solution of sulfuric acidchlorine analytethe engine oil
11,001,3823502,321908,7252010,420,816,862,41,121,191,15
20,901,3724301,5229010,5 26708,121,1The 15.663,31,041,151,09
31,201,4022003,121208,025809,520,219,260,61,05To 1.141,08
40,801,3623901,922309,926308,821,314,863,91,031,131,08
51,101,3922702,821509,3 27307,320,518,061,51,111,17To 1.14

Raw mixture for the preparation of corrosion-resistant salewelcome concrete, comprising a filler and a binder, wherein the binder comprises an aluminosilicate component and the alkaline component is sodium silicate with silicate module n=0.8 to 1.2 and a density of ρ=1,36-1,40 g/cm3and manufactured from waste Ferroalloy production - microsilica containing 13 wt.% impurities, characterized by the true density ρand=2200-2430 kg/m3and loss after calcination 1,5-3,1%; aluminosilicate component comprises fly ash I field generated by burning brown coal KATEK at CHPP-7, Bratsk and characterized the true density ρand=2120-2290 kg/m3and the residue on the sieve No. 008 - 8-10,5%, and the filler used whether otvalnuyu ash-slag mixture consisting of 9% from waste ash with a particle size of 0.14 mm or less, and 91% of slag, grain size, characterized by the fineness modulus of MK=3.5, with a ratio of grain fractions, %:

FR. 5 mmOf 13.0
FR. 2.5 mmA 21.5
FR. 1.25 mm16,0
FR. 0,63 mm27,5
FR. 0,315 mmOf 13.0
FR. 0.14 mm and less than9,0

the true density ρand=2520-2730 kg/m3the loss after calcination at 7.3-10.4% and strength for divisibility by 15% in the following ratio of components of the raw material mixture, wt.%:
This ash I fieldOf 20.2 to 21.3
Specified liquid glass14,8-19,2
Specified whether ash-slag mixture60,6-63,9



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and can be used in making structures and articles. A crude mixture for making ash-alkaline concrete, which includes binder consisting of II field flue ash with true density ρi=2590-2800 kg/m3 and losses after calcination of 3.1-4.9%, obtained from burning KATEK brown coal at Irkutsk TPP-7, and liquid glass with silica modulus n=0.9-1.4 and density ρ=1.36-1.38 g/cm3, made from Bratsk Ferroalloy Plant wastes - microsilica with true density ρi=2120-2280 g/cm3, and filler in the form of screenings from crushing diabase into rock chips with true density ρi=2850-3120 kg/m3, crushability strength of 10.4-13.1%, with the following ratio of grains of fractions, wt %: fr. 5 mm 55.0, fr. 2.5 mm 27.3, fr.1.25 mm 2.75, fr. 0.63 mm 4.64, fr. 0.315 mm 3.62, fr. 0.14 mm 6.69 and fineness modulus of 4.47, with the following ratio of components of the crude mixture, wt %: field II flue ash 21.74-22.22, said liquid glass 11.12-13.04, said screenings from crushing diabase 65.22-66.66.

EFFECT: high strength.

5 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to construction materials industry and can be used in making building structures and units. The raw mixture for making ash and alkali concrete containing a binding agent consisting of liquid glass with a silica ratio of n=0.8-1.2 and a density of ρ=1.37-1.39 g/cm3 produced of industrial ferrosilicone waste from Bratsk Ferroalloy Plant that is silica fume having a bulk density of ρb=270-290 kg/m3 and a percentage of other impurities of 1.1-3.8%, and flue ash II field by Kansk-Achinsk brown coal combustion at Bratsk Central Heating and Power Plant TETs-7 at a bulk density of ρb=980-1,050 kg/m3 and a sieve No. 008 residue of 7.3-9.8%, and a filling agent that is Bratsk Aggregates Plant waste, rejected dunstone chips having a bulk density of ρb=1,560-1,690 kg/m3, a crushability strength of 9.8-12.6%, in the following fraction grains, wt %: fr. 5 mm 45.0, fr. 2.5 mm 21.3, fr. 1.25 mm 10.7, fr. 0.63 mm 7.6, fr. 0.315 mm 8.7, fr. 0.14 mm 6,7 and containing 0-15% of clay impurities in the following proportions of the raw mixture components, wt: above flue ash II field 21.1-22.7, above liquid glass 9.2-15.6, above rejected dunstone chips 63.3-68.1.

EFFECT: higher strength.

5 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials and can be applied for production of constructions and products. Raw material mixture for preparation of ash-and-slag concrete, which includes binding agent, consisting of liquid glass, is characterised by silicate module n = 1 and density ρ = 1.36-1.40 g/cm3 and produced from technogenic waste from ferrosilicon production of Bratsk ferroalloy plant - microsilica with true density ρa = 2270-2510 kg/m3, and fly ash of field I, characterised by bulk density ρb = 995-1175 kg/m3, residue on sieve No. 008 13.1% and loss on ignition 0.21-1.14%, as filler - non-utilisable ash-and-slag mixture, formed after combustion of brown coal of KAFEC on TPS-6 of Bratsk city of Irkutsk region and characterised by bulk density ρb = 1070-1190 kg/m3, consisting of ash with grain size 0.14 mm and smaller and from slag with grain size 0.315-5 mm with ratio of grains of fractions, %: fr. 5 mm 9.1, fr. 2.5 mm 26.7, fr. 1.25 mm 18.3, fr. 0.63 mm 24.2, fr. 0.315 mm 9.8, fr. 0.14 mm and smaller 11.9, impact strength 13.2-16.8% and coarseness module 3.6 with the following ratio of raw material components, wt %: said fly ash of field I 20.0-20.8, said liquid glass 16.8-20.0, said ash-and-slag mixture 60.0-62.4.

EFFECT: increased strength.

5 tbl

FIELD: construction.

SUBSTANCE: composite building material produced from mixture, comprising the sodium fluorosilicate, peat of Gusevskoye deposit and slurry, produced by mixing the tripoli of Sukholozhskoye deposit ground to specific surface area of 2000 m2/g with 40% solution of sodium hydroxide and water at their weight ratio of 1:1.34:3.10 respectively, maintaining at 95°C during 4 hours and cooling, at the following ratio of components, pts. wt.: sodium silicofluoride 7-9, specified peat 33-39, the mentioned suspension 52-60.

EFFECT: production of wall materials with the use of simplified technology and local raw materials.

1 tbl

FIELD: construction.

SUBSTANCE: composite building material produced from mixture, comprising the sodium fluorosilicate, chopped straw, microsilica and slurry, produced by mixing the tripoli of Sukholozhskoye deposit ground to specific surface area of 2000 m2/g with 40% solution of sodium hydroxide and water at their weight ratio of 1:1.34:3.1 respectively, maintaining at 95°C during 4 hours and cooling, at the following ratio of components, wt %: sodium silicofluoride 7-9, chopped straw 20-24, microsilica 8-10, the mentioned suspension 57-65.

EFFECT: providing production of wall materials with the use of simplified technology and local raw materials.

1 tbl

FIELD: construction.

SUBSTANCE: composite building material produced from mixture, comprising the sodium fluorosilicate, microsilica, peat of Gusevskoye deposit and slurry, produced by mixing the tripoli of Sukholozhskoye deposit ground to specific surface area of 2000 m2/g with 40% solution of sodium hydroxide and water at their weight ratio of 1:1.34:3.10 respectively, maintaining at 95°C during 4 hours and cooling, at the following ratio of components, wt %: sodium silicofluoride 7-9, microsilica 7-10, specified peat 26-29, the mentioned suspension 52-60.

EFFECT: providing the possibility of production of the wall materials with the use of simplified technology and local raw materials.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to construction materials industry and can be used in making building units and structures. In the method for producing concrete involving dispensing a filling agent and binding components, mixing them, moulding the units and hardening, the filling agent is presented by non-utilisable ash and slag mixture produced by Kansk-Achinsk brown coal combustion at Irkutsk Central Heating and Power Plant TETs-6 at a crushability strength Cr=12.5-15.3%, a true density of ρt=2,320-2,490 kg/m3 and percentage of other impurities=2.65-4.78% in fraction ratio, %: fr. 5 mm 11.2, fr. 2.5 mm 19.4, fr. 1.25 mm 17.1, fr. 0.63 mm 25.2, fr. 0.315 mm 14.3, fr. 0.14 mm and less than 12.8; the binding agent is a binding agent containing flue ash II field produced by Kansk-Achinsk brown coal combustion at Irkutsk Central Heating and Power Plant TETs-7 at a crushability strength of ρt=2,610-2,830 kg/m3 and percentage of other impurities=3.4-5.6%, and liquid glass produced of ferrosilicone waste from Bratsk Ferroalloy Plant that is silica fume having a crushability strength of 2,170-2,390 kg/m3 and a content of crystalline impurities of 7-11 wt %, with a silica ratio of n=0.8-1.3 and density ρ=1.37-1.39 g/cm3 in the following proportions, wt %: above flue ash II field 19.4-20.9, above non-utilisable ash and slag mixture 58.2-62.7, above liquid glass 16.4-22.4; the items are moulded by vibration, then kept for 1 h in the air-dry environment at a temperature of 15-25°C, and hardened by curing at a temperature of a 80±5°C for 2+4+2 h.

EFFECT: higher strength and reduced length of the technological process.

6 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a composition, including an acid-resistant inorganic binding agent and fibres. A composite construction material, containing at least one inorganic binding agent and a fibrous material, where the inorganic binding agent represents soluble glass, a fraction of the soluble glass content in the composite construction material constitutes 2-99 wt %, the fibrous material is present in the form of fibres in a bulk state, and/or in the form of threads, and/or in the form of a woven, and/or knitted, and/or mesh, and/or non-woven fibrous material, and/or canvas, and/or in the form of hollow fibres, and/or in the form of torn fibres, and/or in the form of cut fibres, and/or in the form of chopped fibres, and/or in the form of grinded fibres, the said material in addition to the said soluble glass contains the binding agent with latent hydraulic properties so that the application of the composition and/or the catalyst prevents Ca(OH)2 formation, the said composition or catalyst contains at least one complexing agent. A moulded product, containing or consisting of the said composite materials. A coating, consisting of the said composite materials. The invention is developed in dependent formula claims.

EFFECT: increased chemical durability, water resistance, temperature resistance.

16 cl, 4 ex

FIELD: construction.

SUBSTANCE: raw mixture for production of heat-insulating layer, comprising the synthetic fibrous filler, water glass, additive, includes Portland cement M500 as an additive according to the invention at the following ratio of components, weight part: synthetic fibre filler with length of 2-100 mm 100, liquid glass 40-60, Portland cement M 500 30-40.

EFFECT: increase of the bonding strength of the heat-insulating layer.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to production of construction materials and can be used in producing heat insulation, structural-heat insulation and structural concrete for residential and civil construction. A composite material, obtained from a mixture including sodium silicofluoride, wood processing wastes, a suspension obtained by mixing ground tripoli from the Sukholozhsky deposit of Sverdlovsk region, 40% sodium hydroxide solution and water in weight ratio of 1:1.34:3.10, respectively, and holding for four hours at 95°C, followed by cooling, with the following ratio of components, wt %: said suspension 47-53, sodium silicofluoride 5-7, wood processing wastes 42-46.

EFFECT: cheap production of the material.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials and can be applied for production of constructions and products. Raw material mixture for preparation of ash-and-slag concrete, which includes binding agent, consisting of liquid glass, is characterised by silicate module n = 1 and density ρ = 1.36-1.40 g/cm3 and produced from technogenic waste from ferrosilicon production of Bratsk ferroalloy plant - microsilica with true density ρa = 2270-2510 kg/m3, and fly ash of field I, characterised by bulk density ρb = 995-1175 kg/m3, residue on sieve No. 008 13.1% and loss on ignition 0.21-1.14%, as filler - non-utilisable ash-and-slag mixture, formed after combustion of brown coal of KAFEC on TPS-6 of Bratsk city of Irkutsk region and characterised by bulk density ρb = 1070-1190 kg/m3, consisting of ash with grain size 0.14 mm and smaller and from slag with grain size 0.315-5 mm with ratio of grains of fractions, %: fr. 5 mm 9.1, fr. 2.5 mm 26.7, fr. 1.25 mm 18.3, fr. 0.63 mm 24.2, fr. 0.315 mm 9.8, fr. 0.14 mm and smaller 11.9, impact strength 13.2-16.8% and coarseness module 3.6 with the following ratio of raw material components, wt %: said fly ash of field I 20.0-20.8, said liquid glass 16.8-20.0, said ash-and-slag mixture 60.0-62.4.

EFFECT: increased strength.

5 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to construction materials industry and can be used in making building units and structures. In the method for producing concrete involving dispensing a filling agent and binding components, mixing them, moulding the units and hardening, the filling agent is presented by non-utilisable ash and slag mixture produced by Kansk-Achinsk brown coal combustion at Irkutsk Central Heating and Power Plant TETs-6 at a crushability strength Cr=12.5-15.3%, a true density of ρt=2,320-2,490 kg/m3 and percentage of other impurities=2.65-4.78% in fraction ratio, %: fr. 5 mm 11.2, fr. 2.5 mm 19.4, fr. 1.25 mm 17.1, fr. 0.63 mm 25.2, fr. 0.315 mm 14.3, fr. 0.14 mm and less than 12.8; the binding agent is a binding agent containing flue ash II field produced by Kansk-Achinsk brown coal combustion at Irkutsk Central Heating and Power Plant TETs-7 at a crushability strength of ρt=2,610-2,830 kg/m3 and percentage of other impurities=3.4-5.6%, and liquid glass produced of ferrosilicone waste from Bratsk Ferroalloy Plant that is silica fume having a crushability strength of 2,170-2,390 kg/m3 and a content of crystalline impurities of 7-11 wt %, with a silica ratio of n=0.8-1.3 and density ρ=1.37-1.39 g/cm3 in the following proportions, wt %: above flue ash II field 19.4-20.9, above non-utilisable ash and slag mixture 58.2-62.7, above liquid glass 16.4-22.4; the items are moulded by vibration, then kept for 1 h in the air-dry environment at a temperature of 15-25°C, and hardened by curing at a temperature of a 80±5°C for 2+4+2 h.

EFFECT: higher strength and reduced length of the technological process.

6 tbl

Concrete mix // 2544035

FIELD: construction.

SUBSTANCE: concrete mix includes Portland blast-furnace cement, ground blast-furnace slag with size of 0-5 mm and soda ash at the following ratio of ingredients, wt %: Portland blast-furnace cement 20-25; ground blast-furnace slag with size of 0-560-72; soda ash - balance.

EFFECT: reduced migration activity of heavy metals when used in medium with higher acidity, with preservation of strength, frost resistance of concrete products.

2 tbl

Concrete mixture // 2539450

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials and can be used in production of foundation and wall blocks, wall panels, in constructions of bearing layer of concrete floors. Concrete mixture, including binding agent, crushed granite from dump blast furnace slag with fraction 5-20 mm, quartz sand and water, contains as binding agent multi-component mineral binding agent, consisting of, wt %: milled granulated blast furnace 48.3-56.0, milled converter slag 8.4-13.2, phosphogypsum 35.6-38.5, clinker - 5% of the sum of said components, with the following ratio of mixture components, wt %: said binding agent 14.2-15.7, said crushed granite 29.9-46.7, sand 30.3-45.0, water - the remaining part.

EFFECT: increased flexural strength with reduction of heat conductivity.

3 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic binding agents. System of inorganic binding agent includes, wt.p.: 10-30 of at least one latent hydraulic binding substance, selected from blast furnace slag, slag sand, milled slag, electrothermal phosphorus slag and metal-containing slag, 5-22 of at least one amorphous silicon dioxide, selected from precipitated silicon dioxide, pyrogenic silicon dioxide, microsilica and glass powder, 0-15 of at least one reactionable filler, selected from brown coal fly ash, mineral coal fly ash, metakaolin, volcanic ash, tuff, trass, pozzolan and zeolites, and 3-20 of at least one alkali metal silicate, and in which content of CaO is 12-25 wt %, setting requires 10-50 wt.p., latent hydraulic binding substance, amorphous silicon dioxide and optional said filler is present as first component and alkali metal silicate and water - as second component. System can be applied for obtaining hydraulically setting mortar.

EFFECT: increased resistance to action of acid, water and alkali.

6 cl, 3 tbl

FIELD: construction.

SUBSTANCE: invention relates to erection of cast-in-situ structures in difficult-to-access areas, and namely to cast concrete mixtures for cast-in-situ concreting of building structures. A cast-in-situ concreting method of a stationary sea ice-resistant platform involves preparation of concrete mix by mixing of dry components: a binding agent - Portland-slag cement, quartz sand, granite crushed stone with fraction of 5-20 mm, fine crushed mineral filler - MP-1 powder, with water and additives - a plasticising agent based on polycarboxylates - Muraplast FK-63 and hardening retarder - Centrament Retard 390, till concrete mix of cast consistency with cone spread of 50-70 cm is obtained, and with delamination of not more than 0.4% and with preservation capacity of at least 3 hours, supply of concrete mix to a framework with a concrete pump at flow rate of 2500-3000 l/h, and hardening is performed under normal conditions during 28-60 days, at the following component ratio, wt %: Portland-slag cement 13.3-16.9, quartz sand 42.4-42.6, the above said crushed stone 25.3-27.9, mineral powder MP-1 6.6-6.8, the above said plasticising agent 0.1-0.2, the above hardening retarder 0.07-0.08, and water is the rest.

EFFECT: providing viscosity and preservation capacity of concrete mix at its supply, and improving concrete crack resistance.

4 tbl

FIELD: construction.

SUBSTANCE: method to prepare an ash-concrete mix, including mixing of ash, portland cement, sand, crushed stone and water, where ash of hydraulic removal is enriched, then the produced ash jointly with portland cement, gypsum and plasticising additive LTSM-2 is ground in a ball mill to the specific surface of 4500-5000 cm2/g, the produced mix is introduced, 2/3 part of the estimated hardening water quantity, sand and quick lime into a dispersing hydrator and exposed to activation for 1-2 min at speed of blades rotation 100-200 rpm, in the concrete mixer they mix crushed limestone and the remaining part of the hardening water for 1-2 min, then the activated mixture from the dispersing hydrator is charged into a concrete mixer, and by final mixing they produce a concrete mix of homogeneous consistence.

EFFECT: cheapening of a mix, faster process of setting and hardening of an ash concrete mix, increased strength and stability of ash concrete properties, expanded area of recycling of anthropogenic origin wastes.

1 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to geopolymer compositions. A dry mixture for a geopolymer binder contains at least one fly ash containing calcium oxide in amount of less than or equal to 15 wt %, at least one gel formation accelerator and at least one hardening accelerator having a composition different from that of said ash. Said dry mixture prepared by mixing with an activator. A geopolymer concrete or mortar composition obtained by mixing said binder with an aggregate. Methods of preparing a concrete or mortar composition using said binder. The invention is developed in subclaims.

EFFECT: reduced microcracking, maintaining ultimate strength after hardening at low temperature.

50 c, 40 ex, 6 tbl, 3 dwg

Concrete mix // 2517257

FIELD: construction.

SUBSTANCE: concrete mix includes, wt %: portland cement 26.0-30.0; ash-slag filler 49.4-51.3; glass fibre cut into sections 10-20 mm 0.3-0.5; sodium citrate 0.04-0.06; technical lignosulfonate LST 0.16-0.24; water 20.0-22.0.

EFFECT: increased frost resistance of concrete.

1 tbl

Concrete mix // 2516263

FIELD: construction.

SUBSTANCE: concrete mix contains, wt %: portland cement 26.0-30.0; ash slag filler 49.1-51.1; caproic fibre cut into sections 10-20 mm 0.2-0.3; sodium citrate 0.04-0.06; sodium ethyl siliconate 0.54-0.66; water 20.0-22.0.

EFFECT: increased frost resistance of concrete.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and can be used in making structures and articles. A crude mixture for making ash-alkaline concrete, which includes binder consisting of II field flue ash with true density ρi=2590-2800 kg/m3 and losses after calcination of 3.1-4.9%, obtained from burning KATEK brown coal at Irkutsk TPP-7, and liquid glass with silica modulus n=0.9-1.4 and density ρ=1.36-1.38 g/cm3, made from Bratsk Ferroalloy Plant wastes - microsilica with true density ρi=2120-2280 g/cm3, and filler in the form of screenings from crushing diabase into rock chips with true density ρi=2850-3120 kg/m3, crushability strength of 10.4-13.1%, with the following ratio of grains of fractions, wt %: fr. 5 mm 55.0, fr. 2.5 mm 27.3, fr.1.25 mm 2.75, fr. 0.63 mm 4.64, fr. 0.315 mm 3.62, fr. 0.14 mm 6.69 and fineness modulus of 4.47, with the following ratio of components of the crude mixture, wt %: field II flue ash 21.74-22.22, said liquid glass 11.12-13.04, said screenings from crushing diabase 65.22-66.66.

EFFECT: high strength.

5 tbl

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