CN107382245A - A kind of fine coal sand-lime autoclave aerated concrete building block and preparation method thereof - Google Patents

A kind of fine coal sand-lime autoclave aerated concrete building block and preparation method thereof Download PDF

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CN107382245A
CN107382245A CN201710636539.XA CN201710636539A CN107382245A CN 107382245 A CN107382245 A CN 107382245A CN 201710636539 A CN201710636539 A CN 201710636539A CN 107382245 A CN107382245 A CN 107382245A
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parts
sand
flyash
building block
concrete building
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CN107382245B (en
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杨伟军
魏先旺
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/28Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials

Abstract

The invention discloses a kind of fine coal sand-lime autoclave aerated concrete building block and preparation method thereof, raw material includes following component in parts by weight:39 parts~60 parts of flyash, 26 parts~40 parts of sand, 20 parts~30 parts of iron tailings micro mist, give up 23 parts~43 parts of brick recycled fine aggregate, 12 parts~22 parts of cement, 14 parts~24 parts of lime, 5 parts~10 parts of gypsum, 0.05 part~0.08 part of aluminium powder.The fine coal sand-lime autoclave aerated concrete building block, is combined using flyash with sand, fills iron tailings micro mist, and regeneration aggregate is used as instead of a part of sand by useless brick recycled fine aggregate, intensity is high, and workability is good, it is light, there is good heat-insulating property and durability, fire resistance is strong.Largely using industrial wastes such as flyash, iron tailings micro mist, useless brick recycled fine aggregates, economic advantages are obvious, energy-conserving and environment-protective, and coal consumption is low.

Description

A kind of flyash-sand autoclave aerated concrete building block and preparation method thereof
Technical field
The present invention relates to the technical field of concrete segment, especially, is related to a kind of flyash-sand steam-pressing aero-concrete Building block and preparation method thereof.
Background technology
As China continues to increase to novel wall material promotion efficiency, autoclave aerated concrete building block is in China city Application in construction material is very universal, and the production technology level of autoclave aerated concrete building block there has also been to be carried greatly very much Height, properties of product and technical-economic index are all continued to optimize.Structural material and insulation as load-bearing and non-bearing are gone along with sb. to guard him Material, it has, and in light weight, heat preserving heat insulating noise insulation efficiency is good, fire resistance is good, water suction is slow, good endurance, can saw and can dig, have Certain mechanical strength and machinability etc..Compared with traditional clay brick, autoclave aerated concrete building block can be provided with Economization on land Source, improve building energy conservation effect.
The autoclave aerated concrete building block of domestic production at present mainly has two types:Fly-ash steaming pressing aero-concrete is built Block, sand autoclave aerated concrete building block.Wherein, coal ash autoclaved air-entrained concrete building block idiosome easily collapses mould, and product fragility is big, by force Spend low, but workability is good;Sand autoclave aerated concrete building block grindability is poor, causes equipment attrition big, the fineness and concentration of mortar More difficult control, idiosome unit weight are easy to lay particular stress on, and the packet header that product goes out after kettle to be also easy to produce bottom faces in adhesion, especially somersault equipment is glued It is even serious, cause low qualified, workability is bad, but product strength is high.Answered therefore, it is necessary to develop a kind of flyash with sand The autoclave aerated concrete building block of conjunction.
In addition, counted according to Chinese metallurgical mine enterprises association, about 400,000,000 tons of China's iron tailings yield in 2005, to 2015 About 59.7 hundred million tons of iron tailings of cumulative production, wherein the iron tailings amount stored up accounts for nearly the 1/3 of whole tailings impoundment total amounts, turn into stockpiling One of industrial solid wastes that amount is maximum, utilization rate is relatively low.Building waste is the chief component of municipal refuse, accounts for city The 30%~40% of rubbish total amount, wherein, concrete block and brickbat account for 80%~90%, are that construction refuse resource utilizes Main study subject.The recycling of useless brick is to developing a circular economy, environmental protection has great importance.Therefore, iron tail Ore deposit, the comprehensive utilization of useless brick are very urgent.
The content of the invention
The invention provides a kind of flyash-sand autoclave aerated concrete building block and preparation method thereof, added with solving steam pressure The workability of gas concrete segment can not be balanced with intensity and flyash, iron tailings, the technical problem of useless brick stockpiling.
The technical solution adopted by the present invention is as follows:
A kind of flyash-sand autoclave aerated concrete building block, raw material include following component in parts by weight:Flyash 39 Part~60 parts, 26 parts~40 parts of sand, 20 parts~30 parts of iron tailings micro mist, give up 23 parts~43 parts of brick recycled fine aggregate, 12 parts of cement ~22 parts, 14 parts~24 parts of lime, 5 parts~10 parts of gypsum, 0.05 part~0.08 part of aluminium powder.
Further, raw material includes following component in parts by weight:45 parts~55 parts of flyash, 30 parts~36 parts of sand, 22 parts~28 parts of iron tailings micro mist, give up 30 parts~35 parts of brick recycled fine aggregate, 16 parts~20 parts of cement, 16 parts~22 parts of lime, 6 parts~9 parts of gypsum, 0.05 part~0.08 part of aluminium powder.
Further, raw material includes following component in parts by weight:48 parts of flyash, 32 parts of sand, iron tailings micro mist 25 Part, give up 33 parts of brick recycled fine aggregate, 17 parts of cement, 19 parts of lime, 7 parts of gypsum, 0.07 part of aluminium powder.
Further, raw material also includes auxiliary agent, auxiliary agent be foam stabilizer, cellulose ether, Redispersable latex agent, swelling agent, One or more in fiber.
Further, sand is the one or more in artificial sand, mountain sand, river sand.
Further, the modulus of fineness more than 80 μm of square hole screens of sand is 18%~22%.
Further, the modulus of fineness more than 45 μm of square hole screens of flyash is 8%~20%.
Further, the modulus of fineness of the 0.15mm sieve apertures of useless brick recycled fine aggregate is 11%~31%.
Further, the modulus of fineness more than 45 μm of square hole screens of iron tailings micro mist is 5%~15%.
Further, the modulus of fineness more than 80 μm of square hole screens of aluminium powder is 0.5%~1%.
Further, cement is portland cement, intensity >=42.5MPa of cement.
Further, pulverized limestone digestion time is 16min, digestion temperature be 76 DEG C, effective CaO content be 75%~ 78.82%, content of MgO is 5.74%~10%, and the modulus of fineness more than 45 μm of square hole screens is 10%~20%.
According to another aspect of the present invention, a kind of preparation side of above-mentioned flyash-sand steam-pressing aero-concrete is additionally provided Method, comprise the following steps:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, Reach defined modulus of fineness after ball milling;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by step (1) Flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials after ball milling include cement, lime, gypsum, by weight After measuring part stoichiometry, pouring truck is put into, stirring obtains slurry, injects and adds aluminium powder suspension before mould into slurry, then Inject mould;Slurry, which foams to be formed, quiet after base substrate to stop and cuts;(3) base substrate after the cutting that will be obtained in step (2) is put into steaming Steam press maintenance is carried out in pressure kettle, that is, obtains flyash-sand autoclave aerated concrete building block.
Further, in step (2), aluminium powder suspension 0.5~1min before slurry injects mould is put into.
Further, the quiet time stopped is 1.5~2.5h, and the temperature in quiet stopping time is 50~80 DEG C.
Further, the pressure of steam press maintenance is 0.8~1.5MPa in step (3), and the time of steam press maintenance is 6~12h.
The invention has the advantages that:
1st, flyash-sand autoclave aerated concrete building block of the invention, is combined using flyash with sand, and admixture iron tailings is micro- Powder, and regeneration aggregate is used as instead of a part of sand by useless brick recycled fine aggregate, intensity is high, and workability is good, light, has good Heat-insulating property and durability, fire resistance is strong, the exterior wall filling built available for frame structure or cast-in-place concrete structure, interior wall Cut-off, can be used for the exterior wall or thermal insulation composite wall body of antidetonation ring beam structure tier building.
2nd, flyash-sand autoclave aerated concrete building block of the invention, good toughness, is not easy truncation angle;It will not be produced when going out kettle Raw adhesion, improve the qualification rate of concrete segment product.
3rd, flyash-sand autoclave aerated concrete building block of the invention, flyash, iron tailings micro mist, useless brick are largely utilized The industrial wastes such as recycled fine aggregate, economic advantages are obvious, energy-conserving and environment-protective, and coal consumption is low.
4th, the preparation method of flyash-sand autoclave aerated concrete building block of the invention, simple and easy to do, production process Middle slurry concentration and fineness are easily controllable, small to equipment attrition, and base substrate is easily controlled and is not easy the mould that collapses.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. The present invention is further detailed explanation below.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.The present invention is described in detail below in conjunction with embodiment.
The present invention's provides a kind of flyash-sand autoclave aerated concrete building block, under raw material is included in parts by weight Row component:39 parts~60 parts of flyash, 26 parts~40 parts of sand, 20 parts~30 parts of iron tailings micro mist, give up 23 parts of brick recycled fine aggregate ~43 parts, 12 parts~22 parts of cement, 14 parts~24 parts of lime, 5 parts~10 parts of gypsum, 0.05 part~0.08 part of aluminium powder.
Flyash-sand autoclave aerated concrete building block of the present invention, flyash, which has concurrently, gathers materials and generates the double of binder materials Recast is used;Flyash provides SiO simultaneously2And Al2O3, hydro-thermal reaction is carried out with lime, generates hydrated silicate and aquation aluminic acid Salt, building block is set to obtain intensity;Increase the workability of autoclave aerated concrete building block simultaneously, solve the problems, such as the stockpiling of flyash.
Flyash-sand autoclave aerated concrete building block of the present invention, the main function of sand are to provide SiO2, in autoclaved condition Under can be reacted with calcium oxide, generate hydrated calcium silicate;Simultaneously sand can be played in steam-pressing aero-concrete walls skeleton and The effect gathered materials.
Flyash-sand autoclave aerated concrete building block of the present invention, the effect of iron tailings micro mist are as follows:1st, iron tailings micro mist Density ratio flyash, the admixture such as slag powders it is big, can eliminate the admixture in steam-pressing aero-concrete float caused by it is even The shortcomings that matter difference.2nd, the water demand ratio of iron tailings micro mist is relatively low, and steam-pressing aero-concrete water consumption can be reduced after incorporation.3、 Make the workability of steam-pressing aero-concrete mixture be improved, improve compression strength.4th, the utilization rate of iron tailings is improved, is solved The stockpiling problem of iron tailings.
Flyash-sand autoclave aerated concrete building block of the present invention, useless brick recycled fine aggregate are used to substitute a part of sand, made For regeneration aggregate, building materials are circulated, solve the problems, such as growing building waste stockpiling.
Flyash-sand autoclave aerated concrete building block of the present invention, is combined using flyash with sand, and admixture iron tailings is micro- Powder, and regeneration aggregate is used as instead of a part of sand by useless brick recycled fine aggregate, said components synergy, make what is be prepared Flyash-sand autoclave aerated concrete building block intensity is high, and workability is good, light, has good heat-insulating property and durability, resistance to Fire is strong;And largely using industrial wastes such as flyash, iron tailings micro mist, useless brick recycled fine aggregates, economic advantages are obvious, section Can be environmentally friendly, coal consumption is low;The exterior wall built available for frame structure or cast-in-place concrete structure is filled, interior wall partition, can also Exterior wall or thermal insulation composite wall body for antidetonation ring beam structure tier building.
Flyash-sand autoclave aerated concrete building block of the present invention, the main function of lime are:1st, released after meeting water decomposition Heat, promote aluminium powder and water reaction generation hydrogen, tiny and uniform bubble is formed, so as to form the base substrate of loose structure.2、 Under conditions of steam press maintenance, further hydrated calcium silicate is generated with the silicon dioxde reaction in siliceous material.3rd, due to raw stone Grey solubility at initial stage is big, may advantageously facilitate the denseness of slurry and the hardening of base substrate, is advantageous to improve the intensity of product.
Flyash-sand autoclave aerated concrete building block of the present invention, the main function of gypsum are:1st, cement can be participated in Hydration reaction, adjust cement final setting time.Early stage hydrated reaction of cement, gypsum mainly plays inhibitory action, prevents cement from going out The phenomenon of existing false set.2nd, the digestion process of lime can be influenceed and suppressed, extends its digestion time, and it can be reduced most Digestion temperature afterwards.3rd, the gas-discharging reaction of aluminium powder is participated in.Gypsum can react with the reaction product aluminium hydroxide of aluminium powder and water, raw Produce calcium sulphoaluminate.4th, increase the intensity of base substrate and product, reduce shrinkage value.
Flyash-sand autoclave aerated concrete building block of the present invention, the main function of aluminium powder are to carry out chemistry in the slurry Reaction, release gas and form tiny and uniform bubble, forming autoclave aerated concrete building block has poroid structure.
Flyash-sand autoclave aerated concrete building block of the present invention, good toughness, is not easy truncation angle;It will not be produced when going out kettle Adhesion, improve the qualification rate of concrete segment product.
Preferably, raw material includes following component in parts by weight:45 parts~55 parts of flyash, 30 parts~36 parts of sand, iron 22 parts~28 parts of tailing micro-powder, give up 30 parts~35 parts of brick recycled fine aggregate, 16 parts~20 parts of cement, 16 parts~22 parts of lime, stone 6 parts~9 parts of cream, 0.05 part~0.08 part of aluminium powder.Each component uses flyash-sand steam pressure that said ratio is prepared in raw material Air-entrained concrete building block, intensity is high, and workability is good, has good heat-insulating property and durability, insulation and heat-proof quality are good.
Preferably, raw material includes following component in parts by weight:48 parts of flyash, 32 parts of sand, 25 parts of iron tailings micro mist, Useless 33 parts of brick recycled fine aggregate, 17 parts of cement, 19 parts of lime, 7 parts of gypsum, 0.07 part of aluminium powder.Each component is using above-mentioned in raw material Flyash-sand the autoclave aerated concrete building block being prepared is matched, intensity highest, workability is best, and the qualification rate of product is most It is high.
Preferably, raw material also includes auxiliary agent, and auxiliary agent is foam stabilizer, cellulose ether, Redispersable latex agent, swelling agent, fibre One or more in dimension.Foam stabilizer can significantly improve pouring stability, improve its pore structure, reduce gross blow hole, reduce product Upper, middle and lower bulk density difference.Cellulose ether has excellent thickening, water retention.Redispersable latex agent can significantly increase bonding Intensity.When adding above-mentioned auxiliary agent in prepared autoclave aerated concrete building block raw material, corresponding function can be realized.Adopt With above-mentioned auxiliary agent, play a part of auxiliary in the preparation process of autoclave aerated concrete building block, have and improve pouring stability, Improve pore structure, reduce bulk density difference, water conservation, improve the effect such as adhesion strength, make the block performance that is prepared more preferable.
Preferably, sand is the one or more in artificial sand, mountain sand, river sand.Titanium dioxide can be provided using above-mentioned sand Silicon, under autoclaved condition, reacted with calcium oxide, generate hydrated calcium silicate.
Preferably, the modulus of fineness more than 80 μm of square hole screens of sand is 18%~22%.Select the sand of above-mentioned fineness, Neng Gouzeng Strong skeleton function of the sand in product, increase the intensity of flyash-sand autoclave aerated concrete building block.
Preferably, the modulus of fineness more than 45 μm of square hole screens of flyash is 8%~20%.The water requirement of above-mentioned flyash is 92%~96%, loss on ignition is 0%~8%.Select the flyash of above-mentioned fineness, it is possible to increase what is be prepared is steam pressurized mixed The workability of solidifying earth building blocks.
Preferably, the modulus of fineness of the 0.15mm sieve apertures of useless brick recycled fine aggregate is 11%~31%.Select above-mentioned fineness Useless brick recycled fine aggregate can preferably substitute sand as regeneration aggregate.
Preferably, the modulus of fineness more than 45 μm of square hole screens of iron tailings micro mist is 5%~15%.Above-mentioned iron tailings micro mist Water requirement is 91%~96%, and loss on ignition is 0%~3%.Using above-mentioned iron tailings micro mist, make steam-pressing aero-concrete mixture Workability improved, improve the compression strength of product.
Preferably, the modulus of fineness more than 80 μm of square hole screens of aluminium powder is 0.5%~1%.Using the aluminium powder of above-mentioned fineness, more Easily chemically reacted in the slurry, release hydrogen and form bubble, so that steam-pressing aero-concrete formation is more uniform Vesicular texture.
Preferably, cement is portland cement, intensity >=42.5MPa of cement.Using the portland cement of above-mentioned intensity, The intensity of slurry can be improved.The main function of portland cement is the pouring stability and base substrate for ensureing the producing initial stage stage Setting rate, for the reaction in the steam press maintenance in later stage also important role.
Preferably, pulverized limestone digestion time is 16min, digestion temperature be 76 DEG C, effective CaO content be 75%~ 78.82%, content of MgO is 5.74%~10%, and the modulus of fineness more than 45 μm of square hole screens is 10%~20%.
Present invention also offers a kind of preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, including it is following Step:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, reached after ball milling Defined modulus of fineness;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by the fine coal after ball milling in step (1) Ash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials include cement, lime, gypsum, measure by weight ratio Afterwards, pouring truck is put into, stirring obtains slurry, injects and adds aluminium powder suspension before mould into slurry, is then injected into mould;Slurry Foaming, which is formed, quiet after base substrate to stop and cuts;(3) base substrate after the cutting that will be obtained in step (2), which is put into still kettle, carries out steam pressure Maintenance, that is, obtain flyash-sand autoclave aerated concrete building block.
The preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, simple and easy to do, slurry in production process Concentration and fineness are easily controllable, small to equipment attrition, and base substrate is easily controlled and is not easy the mould that collapses.
Preferably, in step (2), aluminium powder suspension 0.5~1min before slurry injects mould is put into.In above-mentioned steps, Aluminium powder 0.5~1min will be put into before slurry injects mould, so that the reaction of aluminium powder and water is carried out in a mold, with base substrate It is middle to form uniform vesicular texture.
Preferably, the quiet time stopped is 1.5~2.5h, and the temperature in quiet stopping time is 50~80 DEG C.
Preferably, the pressure of steam press maintenance is 0.8~1.5MPa in step (3), and the time of steam press maintenance is 6~12h.
Embodiment
The reagent used in following examples is commercially available.
Embodiment 1
The preferred embodiments of the present invention disclose a kind of flyash-sand autoclave aerated concrete building block, and raw material is included with weight Measure the following component of part meter:48 parts of flyash, 32 parts of sand, 25 parts of iron tailings micro mist, give up 33 parts of brick recycled fine aggregate, cement 17 Part, 19 parts of lime, 7 parts of gypsum, 0.07 part of aluminium powder.
The preferred embodiments of the present invention also disclose the preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, Comprise the following steps:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, through ball Reach defined modulus of fineness after mill;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by ball milling in step (1) Flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials afterwards includes cement, lime, gypsum, by weight After stoichiometry, pouring truck is put into, stirring obtains slurry, and 0.5min adds aluminium powder suspension into slurry before injecting mould, so After inject mould;Slurry, which foams to be formed, quiet after base substrate to stop and cuts.The quiet time stopped is 2.5h, and the temperature in quiet stopping time is 50 DEG C. (3) base substrate after the cutting that will be obtained in step (2), which is put into still kettle, carries out steam press maintenance, and the pressure of steam press maintenance is 1.2MPa, the time of steam press maintenance is 10h, that is, obtains flyash-sand autoclave aerated concrete building block.
Embodiment 2
The preferred embodiments of the present invention disclose a kind of flyash-sand autoclave aerated concrete building block, and raw material is included with weight Measure the following component of part meter:39 parts of flyash, 26 parts of sand, 30 parts of iron tailings micro mist, give up 43 parts of brick recycled fine aggregate, cement 22 Part, 24 parts of lime, 5 parts of gypsum, 0.05 part of aluminium powder, 0.03 part of foam stabilizer, 0.2 part of cellulose ether, redispersable latex powder 0.3 Part, 0.3 part of fiber, 1 part of swelling agent.
The preferred embodiments of the present invention also disclose the preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, Comprise the following steps:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, through ball Reach defined modulus of fineness after mill;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by ball milling in step (1) Flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials afterwards includes cement, lime, gypsum, auxiliary agent, by weight After measuring part stoichiometry, pouring truck is put into, stirring obtains slurry, and 1min adds aluminium powder suspension into slurry before injecting mould, It is then injected into mould;Slurry, which foams to be formed, quiet after base substrate to stop and cuts.The quiet time stopped is 1.5h, and the temperature in quiet stopping time is 80 ℃.(3) base substrate after the cutting that will be obtained in step (2), which is put into still kettle, carries out steam press maintenance, and the pressure of steam press maintenance is 1.5MPa, the time of steam press maintenance is 6h, that is, obtains flyash-sand autoclave aerated concrete building block.
Embodiment 3
The preferred embodiments of the present invention disclose a kind of flyash-sand autoclave aerated concrete building block, and raw material is included with weight Measure the following component of part meter:60 parts of flyash, 40 parts of sand, 20 parts of iron tailings micro mist, give up 23 parts of brick recycled fine aggregate, cement 12 Part, 14 parts of lime, 10 parts of gypsum, 0.08 part of aluminium powder, 0.05 part of foam stabilizer, 0.5 part of redispersable latex powder.
The preferred embodiments of the present invention also disclose the preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, Comprise the following steps:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, through ball Reach defined modulus of fineness after mill;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by ball milling in step (1) Flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials afterwards includes cement, lime, gypsum, auxiliary agent, by weight After measuring part stoichiometry, pouring truck is put into, stirring obtains slurry, and 0.5min adds aluminium powder suspension into slurry before injecting mould Liquid, it is then injected into mould;Slurry, which foams to be formed, quiet after base substrate to stop and cuts.The quiet time stopped is 2.5h, and the temperature in quiet stopping time is 50℃.(3) base substrate after the cutting that will be obtained in step (2), which is put into still kettle, carries out steam press maintenance, the pressure of steam press maintenance For 0.8MPa, the time of steam press maintenance is 12h, that is, obtains flyash-sand autoclave aerated concrete building block.
Embodiment 4
The preferred embodiments of the present invention disclose a kind of flyash-sand autoclave aerated concrete building block, and raw material is included with weight Measure the following component of part meter:45 parts of flyash, 30 parts of sand, 22 parts of iron tailings micro mist, give up 35 parts of brick recycled fine aggregate, cement 20 Part, 22 parts of lime, 6 parts of gypsum, 0.05 part of aluminium powder, 0.3 part of cellulose ether, 0.2 part of redispersable latex powder.
The preferred embodiments of the present invention also disclose the preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, Comprise the following steps:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, through ball Reach defined modulus of fineness after mill;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by ball milling in step (1) Flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials afterwards includes cement, lime, gypsum, auxiliary agent, by weight After measuring part stoichiometry, pouring truck is put into, stirring obtains slurry, and 0.5min adds aluminium powder suspension into slurry before injecting mould Liquid, it is then injected into mould;Slurry, which foams to be formed, quiet after base substrate to stop and cuts.The quiet time stopped is 2h, and the temperature in quiet stopping time is 60 ℃.(3) base substrate after the cutting that will be obtained in step (2), which is put into still kettle, carries out steam press maintenance, and the pressure of steam press maintenance is 1.5MPa, the time of steam press maintenance is 6h, that is, obtains flyash-sand autoclave aerated concrete building block.
Embodiment 5
The preferred embodiments of the present invention disclose a kind of flyash-sand autoclave aerated concrete building block, and raw material is included with weight Measure the following component of part meter:55 parts of flyash, 36 parts of sand, 28 parts of iron tailings micro mist, give up 30 parts of brick recycled fine aggregate, cement 16 Part, 16 parts of lime, 9 parts of gypsum, 0.08 part of aluminium powder, 0.02 part of foam stabilizer, 0.2 part of fiber, 2 parts of swelling agent.
The preferred embodiments of the present invention also disclose the preparation method of above-mentioned flyash-sand autoclave aerated concrete building block, Comprise the following steps:(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, through ball Reach defined modulus of fineness after mill;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;(2) by ball milling in step (1) Flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate and other raw materials afterwards includes cement, lime, gypsum, auxiliary agent, by weight After measuring part stoichiometry, pouring truck is put into, stirring obtains slurry, and 1min adds aluminium powder suspension into slurry before injecting mould, It is then injected into mould;Slurry, which foams to be formed, quiet after base substrate to stop and cuts.The quiet time stopped is 2.5h, and the temperature in quiet stopping time is 65 ℃.(3) base substrate after the cutting that will be obtained in step (2), which is put into still kettle, carries out steam press maintenance, and the pressure of steam press maintenance is 1.2MPa, the time of steam press maintenance is 10h, that is, obtains flyash-sand autoclave aerated concrete building block.
The flyash of above-described embodiment 1~5-sand autoclave aerated concrete building block, according to being provided in GB/T11969-2008 Method carries out performance detection, and testing result is as shown in table 1.
1~5 flyash of embodiment of table 1-sand autoclave aerated concrete building block performance test results
Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Volume-weighted average (kg/m3) 618 616 620 615 616
Compression strength (MPa) 5.68 5.56 5.63 5.6 5.65
Slump (mm) after 1h 190 180 189 185 183
The compression strength of coal ash autoclaved air-entrained concrete building block is typically in 4.39MPa, sand autoclave aerated concrete building block Compression strength be 5.5MPa, air shrinkage value 0.27mm/m.Understood with the contrast of above-mentioned testing result, flyash-sand of the invention The light weight of autoclave aerated concrete building block, intensity is high, and workability is good, has good durability, is not easy slump.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (10)

1. a kind of flyash-sand autoclave aerated concrete building block, it is characterised in that raw material includes following group in parts by weight Point:
39 parts~60 parts of flyash, 26 parts~40 parts of sand, 20 parts~30 parts of iron tailings micro mist, give up brick recycled fine aggregate 23 parts~43 Part, 12 parts~22 parts of cement, 14 parts~24 parts of lime, 5 parts~10 parts of gypsum, 0.05 part~0.08 part of aluminium powder.
2. flyash according to claim 1-sand autoclave aerated concrete building block, it is characterised in that raw material is included with weight Measure the following component of part meter:
45 parts~55 parts of flyash, 30 parts~36 parts of sand, 22 parts~28 parts of iron tailings micro mist, give up brick recycled fine aggregate 30 parts~35 Part, 16 parts~20 parts of cement, 16 parts~22 parts of lime, 6 parts~9 parts of gypsum, 0.05 part~0.08 part of aluminium powder.
3. flyash according to claim 2-sand autoclave aerated concrete building block, it is characterised in that raw material is included with weight Measure the following component of part meter:
48 parts of flyash, 32 parts of sand, 25 parts of iron tailings micro mist, give up 33 parts of brick recycled fine aggregate, 17 parts of cement, 19 parts of lime, stone 7 parts of cream, 0.07 part of aluminium powder.
4. flyash according to any one of claim 1 to 3-sand autoclave aerated concrete building block, it is characterised in that
The sand is the one or more in artificial sand, mountain sand, river sand;And/or
Modulus of fineness more than 80 μm of square hole screens of the sand is 18%~22%.
5. flyash according to any one of claim 1 to 3-sand autoclave aerated concrete building block, it is characterised in that
Modulus of fineness more than 45 μm of square hole screens of the flyash is 8%~20%;And/or
The modulus of fineness of the 0.15mm sieve apertures of the useless brick recycled fine aggregate is 11%~31%.
6. flyash according to any one of claim 1 to 3-sand autoclave aerated concrete building block, it is characterised in that
Modulus of fineness more than 45 μm of square hole screens of the iron tailings micro mist is 5%~15%;And/or
Modulus of fineness more than 80 μm of square hole screens of the aluminium powder is 0.5%~1%.
7. flyash according to any one of claim 1 to 3-sand autoclave aerated concrete building block, it is characterised in that
The cement is portland cement, intensity >=42.5MPa of the cement.
8. a kind of preparation method of flyash-sand autoclave aerated concrete building block any one of claim 1 to 7, its It is characterised by, comprises the following steps:
(1) flyash, sand, iron tailings micro mist, useless brick recycled fine aggregate, aluminium powder are put into ball mill respectively, after ball milling Reach defined modulus of fineness;Aluminium powder stirring after ball milling is formulated as aluminium powder suspension;
(2) by the flyash after ball milling in the step (1), sand, iron tailings micro mist, useless brick recycled fine aggregate and other originals Material includes cement, lime, gypsum, after measuring by weight ratio, puts into pouring truck, and stirring obtains slurry, before injection mould to The aluminium powder suspension is added in the slurry, is then injected into mould;The slurry, which foams to be formed, quiet after base substrate to stop and cuts;
(3) base substrate after the cutting that will be obtained in the step (2), which is put into still kettle, carries out steam press maintenance, that is, obtains the powder Coal ash-sand autoclave aerated concrete building block.
9. the preparation method of flyash according to claim 8-sand autoclave aerated concrete building block, it is characterised in that
In the step (2), the aluminium powder suspension 0.5~1min before the slurry injects mould is put into;And/or
The quiet time stopped is 1.5~2.5h, and the temperature in quiet stopping time is 50~80 DEG C.
10. the preparation method of flyash according to claim 8-sand autoclave aerated concrete building block, it is characterised in that
The pressure of steam press maintenance is 0.8~1.5MPa in the step (3), and the time of steam press maintenance is 6~12h.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108911665A (en) * 2018-07-13 2018-11-30 江苏大学 A method of sand aerated concrete block is prepared using cast waste sand
CN109020445A (en) * 2018-09-19 2018-12-18 贵州师范大学 The production method of the old long-pending flyash autoclave aerated concrete building block of light transmission
CN109399982A (en) * 2018-09-27 2019-03-01 山东众森科技股份有限公司 A kind of compound fine aggregate and preparation method thereof and purposes
CN110818377A (en) * 2019-12-20 2020-02-21 上海舟润实业有限公司 Environment-friendly concrete wallboard

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101774796A (en) * 2010-01-29 2010-07-14 安徽大昌矿业集团有限公司 Method for preparing aerated concrete blocks by adopting iron ore tailings
CN101786839A (en) * 2010-01-22 2010-07-28 广东省建筑材料研究院 Pyrite beneficiation tailing autoclaved aerated concrete block and production process thereof
CN103664114A (en) * 2013-11-14 2014-03-26 河南兴安新型建筑材料有限公司 Self-heat-insulating fly ash autoclaved aerated concrete block and preparation method thereof
CN105174894A (en) * 2015-10-12 2015-12-23 吴江市范氏新型建材制品有限公司 Autoclaved aerated concrete brick and preparation method thereof
CN106082904A (en) * 2016-06-17 2016-11-09 广州发展环保建材有限公司 A kind of high-precision building block of steam-pressing aero-concrete and preparation method thereof
CN106365570A (en) * 2016-08-25 2017-02-01 济南轨道交通集团有限公司 Autoclaved brick prepared from waste clay brick and preparation method thereof
CN106365684A (en) * 2016-08-31 2017-02-01 南京福臻再生资源科技股份有限公司 Method for preparing waterproof environmental-friendly bricks
CN106396582A (en) * 2015-07-27 2017-02-15 国网智能电网研究院 Noise-reducing aerated concrete building block and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101786839A (en) * 2010-01-22 2010-07-28 广东省建筑材料研究院 Pyrite beneficiation tailing autoclaved aerated concrete block and production process thereof
CN101774796A (en) * 2010-01-29 2010-07-14 安徽大昌矿业集团有限公司 Method for preparing aerated concrete blocks by adopting iron ore tailings
CN103664114A (en) * 2013-11-14 2014-03-26 河南兴安新型建筑材料有限公司 Self-heat-insulating fly ash autoclaved aerated concrete block and preparation method thereof
CN106396582A (en) * 2015-07-27 2017-02-15 国网智能电网研究院 Noise-reducing aerated concrete building block and preparation method thereof
CN105174894A (en) * 2015-10-12 2015-12-23 吴江市范氏新型建材制品有限公司 Autoclaved aerated concrete brick and preparation method thereof
CN106082904A (en) * 2016-06-17 2016-11-09 广州发展环保建材有限公司 A kind of high-precision building block of steam-pressing aero-concrete and preparation method thereof
CN106365570A (en) * 2016-08-25 2017-02-01 济南轨道交通集团有限公司 Autoclaved brick prepared from waste clay brick and preparation method thereof
CN106365684A (en) * 2016-08-31 2017-02-01 南京福臻再生资源科技股份有限公司 Method for preparing waterproof environmental-friendly bricks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108911665A (en) * 2018-07-13 2018-11-30 江苏大学 A method of sand aerated concrete block is prepared using cast waste sand
CN109020445A (en) * 2018-09-19 2018-12-18 贵州师范大学 The production method of the old long-pending flyash autoclave aerated concrete building block of light transmission
CN109399982A (en) * 2018-09-27 2019-03-01 山东众森科技股份有限公司 A kind of compound fine aggregate and preparation method thereof and purposes
CN110818377A (en) * 2019-12-20 2020-02-21 上海舟润实业有限公司 Environment-friendly concrete wallboard

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