Raw material mixture for concrete production
SUBSTANCE: raw material mixture for concrete production contains, wt %: Portland cement 27.0-31.0; TPP fly ash 52.3-58.9; superplasticiser S-3 0.8-1.4; sodium ethylsiliconate or sodium methylsiliconate 0.2-0.5; 5-30 mm long lavsan fibre 0.05-0.1; water 13.0-15.0.
EFFECT: reduction of cement consumption with provision of concrete strength.
The invention relates to the construction materials industry, in particular the production of concrete.
Famous raw mix for the production of concrete (foam concrete)containing, wt.%: cement 35,0-39,0; fly ash TPP 35,0-39,0; resin air entraining extraction-rosin of 0.11-0.17; carboxymethylcellulose 0,05-0,07; superplasticizer C-3 0,4-1,4; water - other .
The objective of the invention is to reduce cement consumption while ensuring the strength of the concrete.
Technical result is achieved by the fact that the raw mix for the production of concrete containing Portland cement, fly ash of thermal power plants, superplasticizer C-3, water additionally contains ethylsilicate sodium or potassium methyl siliconate and Mylar fiber length of 5-30 mm in the following ratio, wt.%: Portland 27,0-31,0; ash TPP 52,3 to 58.9; superplasticizer C-3 0,8-1,4; ethylsilicate sodium or potassium methyl siliconate 0,2-0,5; Mylar fiber length of 5-30 mm 0,05-0,1; water 13,0-15,0.
The composition of the raw mix is shown in the table.
|composition No. 1||composition No. 2||composition No. 3||composition No. 4|
|Portland cement (500 M)||27,0||29,0||31,0||29,0|
|Ash TES||of 58.9||55,35||52,3||55,35|
|The potassium methyl siliconate||-||-||0,2||0,5|
|Mylar fiber length of 5-30 mm||0,1||0,05||0,1||0,05|
Components dispense, mix and prepare the raw material mixture in which metal fill shapes. The mixture is compacted in the forms and kept it until hardened. The compressive strength of the products obtained from the proposed raw mix, will be not less than 4 MPa.
The use of the proposed raw mixture allows to reduce the consumption of Portland cement and increase the consumption of industrial waste - fly ash of thermal power stations.
The source of information
1. RU # 2237041, C04B 38/10, 2003.
Raw mix for the production of concrete containing Portland cement, fly ash of thermal power plants, superplasticizer C-3, water, characterized in that it further comprises ethylsilicate sodium or potassium methyl siliconate and Mylar fiber length of 5-30 mm in the following ratio, wt.%: Portland 27,0-31,0; ash TPP 52,3 to 58.9; superplasticizer C-3 0,8-1,4; ethylsilicate sodium or potassium methyl siliconate 0,2-0,5; Mylar fiber length of 5-30 mm 0,05-0,1; water 13,0-15,0.
SUBSTANCE: invention relates to production of artificial materials which imitate natural materials. The crude mixture for imitation of natural stone contains, wt %: blast-furnace slag ground and sieved through sieve N014 15.0-20.0; coal dust 5.0-7.0; portland cement 21.0-25.0; superplasticiser S-3 1.0-1.3, ferruginous quartzite ground and sieved through sieve N5 46.7-58.0, with water-to-cement ratio of 0.5-0.6.
EFFECT: high strength.
FIELD: process engineering.
SUBSTANCE: this invention relates to production of construction materials and can be used for fabrication of concrete articles: decorative open-work guards and grates, fine pavement plates and edge stones, etc. This method consists in mixing of components to required fluidity mix. First, water and super plasticiser are mixed in the mixer. Then, added are cement, micro silica, rock dust and mixed for 2-3 minutes. Now, added are sand and fibre and mixed for 2-3 minutes. The following components result: Portland cement PC500D0, sand of 0.125-0.63 fraction, super plasticiser, fibres, micro silica, rock dust, hardening promoter and water. Production of concrete articles in moulds consists in preparation of mortar, mix feed to moulds and curing in evaporation chamber. Mould inner working surface is processed with fine ply of water. This mould filled, thin ply of water is sprayed on mix surface and mould is closed by temporary trough.
EFFECT: higher fluidity, strength, lower costs, possibility of production of open-work articles.
4 cl, 1 tbl, 3 dwg
SUBSTANCE: granulated composite filler for concrete products of size 0.5-10.0 mm, consisting of core and shell, wherein the core is obtained by granulating the mixture together with moulding flask and sodium hydroxide milled up to the specific surface area of 150-250 m2 / kg at their weight ratio of 0.70- 0.95: 0.05-0.30 with combination by aqueous solution of sodium silicate with density of 1.2-1.3 g / cm3 in the amount of 0.1-7.0 wt % of mixture, and shell is formed on the surface of core by its balling with dry dust mixture together with milled quicklime and silicofluoride sodium in a weight ratio of 0.85-0.95: 0.05-0.15 with the subsequent hardening up to the strength not less than 0.12 MPa, alkylsulphonate heated up to 50°C is used at obtention of core together with the indicated combination in the amount of 0.1-7.0 wt % of weight of the core components. Concrete building product is produced by using the granulated filler indicated above.
EFFECT: decrease of duration of steam treatment and water resistance of concrete products when increasing and maintaining the strength characteristics.
2 cl, 1 tbl, 1 ex
SUBSTANCE: stowing composition comprising portland cement, plastifying agent, fine-grained filler - sand and water, additionally comprises as a binder the milled tailings of wet magnetic separation of ferrous quartzites with an average particle size of 2.071 microns, as a plastifying agent - superplasticiser SP-1, and the sand with an average particle size of 62.26 microns with the following ratio of components, wt %; the said cement - 13.48; the said sand - 56.43; the said wastes - 2.70; superplasticiser SP-1 - 0.138; water - the rest.
EFFECT: decrease in cement consumption, and increase in the strength of the stowing composition, use of sand with a lower fineness modulus.
1 ex, 2 tbl
SUBSTANCE: granulated composite filler for concrete products of size 0.5-10.0 mm, consisting of core and shell, wherein the core is obtained by granulating the mixture together with diatomite and sodium hydroxide milled up to the specific surface area of 150-250 m2/kg at their weight ratio of 0.70-0.95:0.05-0.30 with bond by aqueous solution of sodium silicate with density of 1.2-1.3 g/cm3 in the amount of 0.1-7.0 wt % of mixture, and shell is formed on the surface of core by its balling with dry dust mixture together with milled quicklime and silicofluoride sodium in a weight ratio of 0.85-0.95:0.05-0.15 with the subsequent hardening up to the strength not less than 0.12 MPa, after the indicated balling the additional spraying of 40% aqueous solution of oxalic aldehyde in the amount of 1.0-8.0 wt % (per 100% substance) of weight of shell components is carried out. Concrete building product is obtained by using the granulated filler indicated above.
EFFECT: decrease of thermal conductivity and water resistance of concrete products when increasing and maintaining the strength characteristics.
2 cl, 1 tbl, 1 ex
SUBSTANCE: fine-grained cement concrete is composed of cement, sand, water, plasticizing agent and basalt fibre, introduced into the mixture by the hydraulic opening method, at the following ratio of components, wt %: cement - 34, sand - 64, water - 1.4, plasticizing agent - 0.3, basalt fibre - 0.3.
EFFECT: increase of fracture toughness, strength, resistance of micro-reinforcing component to the influence of aggressive alkaline environment of the cement stone.
SUBSTANCE: subject of the present invention is a dry binder premix which contains the following, wt %: portland clinker having a Blaine specific surface area of 4500 to 9500 cm2/g, preferably 5500 to 8000 cm2/g, the minimum quantity of the clinker by mass percentage relative to the total mass of the premix being determined according to formula (I): [-6.10-3×SSBk]+75, in which SSBk is the Blaine specific surface area given in cm2/g; fly ash; at least one alkali metal sulphate, the quantity of alkali metal sulphate being such that the quantity of equivalent Na2O in the premix is greater than or equal to 5 wt% relative to the mass of fly ash; at least one source of SO3, in a quantity such that the quantity of SO3 in the premix is greater than or equal to 2 wt % by relative to the mass of portland clinker; complementary materials having a Dv90 less than or equal to 200 mcm selected from limestone powders, the quantity of clinker+the quantity of fly ash being greater than or equal to 75 wt %, preferably 78 wt %, relative to the total mass of the premix; the total quantity of clinker in the premix being strictly less than 60 wt % relative to the total mass of the premix. The subject of the invention is also a dry binder mix obtained by mixing said premix with aggregates, as well as a concrete grout composition obtained by mixing with water.
EFFECT: obtaining concrete with low carbon dioxide emission.
13 cl, 1 dwg, 3 tbl
SUBSTANCE: raw mixture for production of coarse aggregate shell contains, wt %: Portland cement 30.0-35.0; casein glue 4.0-7.0; fly ash 28.0-31.0; water 30.0-35.0.
EFFECT: increase of bonding strength of shell with the surface of the coarse aggregate.
SUBSTANCE: raw mixture for production of artificial rock includes, wt %: Portland cement 26-30, silica sand 48.44-56.9, water 16-20, fibrous metal-ceramics 1.0-1.5, phenyletoxisiloxane 0.06-0.1.
EFFECT: increase of strength.
SUBSTANCE: concrete mixture comprises, wt %: Portland cement 25.0-27.0; characterized by particle-size composition, wt %: particles larger than 0.63 mm, but smaller than 1 mm - 0.2; larger than 0.315 mm, but smaller than 0.63 mm - 4.8; larger than 0.14 mm, but smaller than 0.315 mm - 62; smaller than 0.14 mm - 33 ash and slag filler 15.0-19.0; slag pumice with density of 0.4-1.6 g/cm3 crushed and sieved through mesh No. 10 - 30.3-34.3; aluminium powder 0.1-0.2; superplasticizing admixture C-3 - 0.5-0.6; water - 23.0-25.0.
EFFECT: increase of concrete strength.
FIELD: process engineering.
SUBSTANCE: invention relates to production of unsintered fly-ash gravel on the basis of acid ash. Mix for production of said gravel on the basis of acid ash of thermal electric power station contains the following elements in wt %: quicklime 5-15, anhydrite 5-15, hardening accelerator - steel-refined slag ground to smaller than 100 mcm 5-50, acid ash of thermal electric power station making the rest.
EFFECT: higher hardness without heat treatment.
SUBSTANCE: method to process ash and slag wastes on coal thermal power plants equipped with boilers with liquid or solid slag removal, for their subsequent industrial recycling and/or piling consists in the following. Liquid slag or molten solid slag is converted into condition suitable for industrial recycling and/or piling by means of quick cooling of slag melt by air-water jets during its aerohydrodynamic spraying. To produce a binding component of processing of fly ash, they perform fine dry grinding of the required quantity of the produced solid granulated slag, if necessary, with additives of hardening activators with subsequent mixing of the grinding product during intense mixing with water and fly ash at the following ratio of components: fly-ash 72-81 wt %, slag binder 18-9.0 wt %, water - not more than 10 wt %, additives-activators of hardening - up to 0.5 wt %. Simultaneously with intense mixing of the specified components they perform granulation of the mixture, then thermal treatment of produced raw granules of the processed fly ash is carried out with steam, generated in process of cooling of the specified slag melt. The fly ash processed in this manner before industrial recycling or piling is exposed to regulated cooling.
EFFECT: recycling of by-products - fly ash and slag produced when fuel is burnt at coal TPPs.
8 cl, 1 dwg
SUBSTANCE: invention relates to industry of construction materials, in particular to production of fine-grained concretes. Raw material mixture for production of fine-grained concrete contains, wt %: Portland cement 26.0-28.0; ash after burning lignite/coal 57.16-61.0; sodium methylsiliconate 0.1-0.14; superplasticiser C-3 0.7-0.9; grinded to passing through No 014 mesh quartz sand 12.0-14.0; with water-cement ratio 0.4-0.45.
EFFECT: reduction of cement consumption in composition of raw material mixture for production of fine-grained concrete.
SUBSTANCE: invention relates to production of porous aggregate for light concrete. The mixture for making porous aggregate contains, wt %: clay rock 69.0-72.0; thermal power plant ash 16,0-22,0; ground flax shive 6,0-10,0; sulphite-yeast wash 2.0-3.0.
EFFECT: high strength of the porous aggregate.
SUBSTANCE: invention relates to techniques for producing unfired fly ash aggregate based on acidic ash and additives. The composition for producing unfired fly ash aggregate, which includes acid ash from heat power industry, portland cement, ground blast-furnace slag, an additive which accelerates hardening of gummy granules - sodium sulphate, additionally contains ground basic rock - hornblendite, with the following ratio of components in wt %: portland cement - 15-20, ground blast-furnace slag - 0-25, sodium sulphate - 2; hornblendite - 10-25, acidic ash - the balance.
EFFECT: high strength and frost resistance of unfired fly ash aggregate through optimisation of the composition which is taken for granulation.
FIELD: process engineering.
SUBSTANCE: invention may be used for making concrete mixes, mortars and other mixes containing cement. Method of processing puzzolanes including slag and flue ash such as Class F and/or Class C comprises subjecting puzzolanes to high-intensity grinding in appropriate grinders. Note here that low-density hollow particles as larger particles of slag get decomposed to activate surface of said particles to make finished product feature the following distribution of particles by sizes (in wt %): ≤5 micron - 15-25, ≤10 micron - 30-40, ≤30 micron - 90-95. Invention is developed in its subclaims.
EFFECT: higher activity of puzzolanes and strength of construction materials.
7 cl, 3 tbl
SUBSTANCE: technology to produce a composite material on the basis of polyvinyl chloride wastes and fly ash from burning of coal on thermal power plants for production of construction materials relates to the field of construction materials production. At first industrial wastes of polyvinyl chloride PVC and modifying additives are mixed, then fly ash is added from coal burning at thermal power plants and mixed to produce a homogeneous mass. The composition containing the following ingredients are exposed to extrusion: industrial wastes of polyvinyl chloride PVC 100 wt parts, fly ash from coal burning at thermal power plants 50.0-170.0 wt parts, modifying additives: thermal light stabiliser - AKSTAB 3.0-7.0 wt parts, fluidity modifier - AKDENIZ 2.5-12.0 wt parts, lubricant - stearic acid 0.1-0.5 wt parts, modifier of crash worthiness - Tyrin 1.0-3.0 wt parts. Also a formula of the composition is characterized for production of a fire resistant construction material.
EFFECT: higher performance indices of a final product, reduction of water absorption, higher impact viscosity and fire resistance.
2 cl, 5 dwg, 1 tbl
SUBSTANCE: present invention relates to a concrete mixture and can be used in the industry of construction materials. The concrete mixture contains the following in wt %: cement 9.8-30.0, a modifying additive 0.0-15, water 0.2-25.0, aggregate - the rest up to 100. The aggregate contains the following in wt %: gas purification wastes from thermal treatment of solid household wastes 1.0-50.0, crushed rock 0.0-50.0, screenings 0.0-50.0, sand 0.2-50.0, gravel 0.0-50.0, ash-slag wastes from thermal treatment of solid household wastes - the rest up to 100.
EFFECT: high workability and sedimentation resistance of the concrete mixture, high strength, frost resistance, water impermeability and low bulk weight of the obtained concrete, wide raw material base of recycled wastes.
1 tbl, 5 ex
SUBSTANCE: in method to make a binder, including mixing of a blast-furnace slag, calcium sulfate dihydrate, alkaline active reagent, prior to mixing the blast-furnace slag is ground down to the specific surface of 700 m2/g, in process of mixing additionally dry extinguished ash and slag mixture is added from burning of black coal and calcium chloride, after mixing, grinding is carried out down to specific surface of 700 m2/g at the following ratio of components, wt %: blast furnace slag 30-45, calcium sulfate dihydrate 4-6, alkaline active reagent 5-15, calcium chloride 1-2, specified ash and slag mix - balance, besides, the alkaline active reagent is sodium or potassium carbonate, sodium or potassium hydroxide or their mixture.
EFFECT: increased strength, frost-resistance, reduced period of hardening.
2 cl, 1 ex, 3 tbl
SUBSTANCE: raw mix for light-weight filler production includes the following components, wt %: TPP slag 10-15; clay 65-77; fly ash 10-15; calcium borate sludge 1.5-2.5; dolomite 1.5-2.5.
EFFECT: increased strength of porous filler.
FIELD: production of micro-spheres from fly ash of thermal power stations.
SUBSTANCE: micro-spheres are used as fillers for building materials and light cements and composite materials; they are also used for manufacture of light sealants, putties, dyes, adhesives, composite wood materials, explosives; manufacture of materials sorbing toxic metals at preservation and protracted storage of radioactive wastes. Proposed method of obtaining micro-spheres from aqueous suspension of fly ash of thermal power stations includes hydraulic separation, removal of emersed micro-spheres, dehydration of micro-spheres and drying them. Removal of emersed micro-spheres by means of mobile plant - ejector pump with filtering attachment at rate of suction of aqueous suspension of 20-250 m3/h from surface of pontoon bottom having area of 5-100 m2 which is pressed to lower layer of micro-spheres by fractions in multi-stage rotary drum-type classifier provided with self-cleaning surfaces of screens for screening-out the micro-spheres.
EFFECT: enhanced efficiency and technical reliability; intensification of micro-sphere extraction process.
4 cl, 3 tbl, 1 ex