CN106145849B - Non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of one kind and its preparation method and application - Google Patents
Non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of one kind and its preparation method and application Download PDFInfo
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- CN106145849B CN106145849B CN201610474985.0A CN201610474985A CN106145849B CN 106145849 B CN106145849 B CN 106145849B CN 201610474985 A CN201610474985 A CN 201610474985A CN 106145849 B CN106145849 B CN 106145849B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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Abstract
The invention discloses a kind of composite gelled material, which is prepared from the following raw materials according to parts by weight：200 ~ 280 parts of building gypsum, 200 ~ 280 parts of high alumina cement, 256 ~ 320 parts of miberal powder, 64 ~ 80 parts of nickel slag.The invention also discloses a kind of non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure, which includes the composite gelled material.The invention also discloses the preparation method and application of the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.The present invention is by building gypsum, miberal powder, and nickel slag and high alumina cement are composite gelled material, and mix foaming is carried out under the conditions of certain match ratio, and it is 680kg/m that dry apparent density, which is made,3The air entrained concrete of left and right, the concrete have light, lower shrinkage, and low water absorption, high-intensitive feature eliminates the process of the aerated concrete steam-cured maintenance of tradition, and has energy-saving advantage.
Description
Technical field
The invention belongs to the field of building materials, in particular to the high-strength alkali-activated carbonatite air entrained concrete of a kind of non-evaporating pressure and its preparation
Methods and applications.
Background technique
Air entrained concrete because of light weight, thermal coefficient is low, fire protecting performance is good, and produced using non-sintered technique, be full
The foundation wall material of sufficient building energy conservation demand and building industrialization has huge market potential.Change in country's hair in 2013
What committee and house and town and country construction portion formulated《Green building material industry solution》In be listed in it is " safety durable, energy conservation and environmental protection, convenient
Green building material ".What the Ministry of Industry and Information Technology, house and town and country construction portion worked out《Promote green building material production and applies action side
Case》(Ministry of Industry and Information 2015 ﹞ of Lian Yuan ﹝ 309) is proposed " encouragement development is kept the temperature, heat-insulated and fire protecting performance is good, convenient construction, use
The suggestion of the external-wall heat-insulation material of service life length " specifies developing direction for the upgrading of air entrained concrete industrial transformation.
Air entrained concrete generally has powder ash air-entrained concrete and two kinds of cement-lime-sand aerated concrete, main aquation
Product is low calcium silicon than hydrated calcium silicate gel C-S-H (I), tobermorite crystal and mirabilitum crystallina pomegranate stone, specific microstructure
The excellent engineer application performance such as aerated concrete light, heat preservation, heat-insulated, fire prevention had not only been imparted with mineralogical characteristic, but also had been caused
Two class air entrained concrete water absorption rates are big, wet guilding is poor, the common fault of wall shrinkage cracking.Therefore, it is built with building industrialization and green
Growth requirement is built as guiding, carries out the research of air entrained concrete mechanical property, volume stability and water absorption character, establishes high-performance
Air entrained concrete material composition, relation be- tween structure and properties, solution traditional product is homogeneous, devalued, carrying capacity of environment is heavy, the energy
The common problems such as low efficiency, resource bottleneck restriction, have important scientific meaning and application value.
Summary of the invention
Goal of the invention：There is provided a kind of composite gelled materials for first technical problem to be solved of the invention.
There is provided a kind of non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure for the present invention also technical problems to be solved.The present invention
The high-strength alkali-activated carbonatite air entrained concrete of the non-evaporating pressure of one kind, it is high to solve existing ordinary air-entrained concrete water absorption rate, shrinks big, the energy
The low problem of utilization rate.
There is provided a kind of preparations of non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure for the present invention also technical problems to be solved
Method.
There is provided a kind of applications of non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure for the present invention also technical problems to be solved.
Technical solution：In order to solve the above-mentioned technical problems, the present invention provides a kind of composite gelled material, the plural gels
Material is prepared from the following raw materials according to parts by weight：200~280 parts of building gypsum, 200~280 parts of high alumina cement, miberal powder 256
~320 parts, 64~80 parts of nickel slag.
A kind of non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure, the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure are wanted comprising right
Composite gelled material described in asking 1.
The non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure is prepared from the following raw materials according to parts by weight：Building gypsum 200~
280 parts, 200~280 parts of high alumina cement, 256~320 parts of miberal powder, 64~80 parts of nickel slag, 5.1~6.4 parts of NaOH, water-reducing agent 6
~10 parts, 20~28 parts of foaming agent, 223.2 parts of water.
Preferably, the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure is prepared from the following raw materials according to parts by weight：Building
200 parts of gypsum, 280 parts of high alumina cement, 256 parts of miberal powder, 64 parts of nickel slag, 5.1 parts of NaOH, 8 parts of water-reducing agent, 24 parts of foaming agent, water
223.2 part.
Wherein, above-mentioned building gypsum is commercially available power plant desulfurization by-product desulphurization gypsum calcination product.
Wherein, above-mentioned high alumina cement is commercially available CA-50 type cement.
Wherein, above-mentioned water-reducing agent uses high efficiency water reducing agent；Foaming agent is commercially available hydrogen peroxide, and the hydrogen peroxide of the hydrogen peroxide is dense
Degree is 30%.
The preparation method of the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of above-mentioned one kind, includes the following steps：
1) building gypsum, high alumina cement, miberal powder and nickel ground-slag material is weighed according to above-mentioned parts by weight to be mixed and stirred for
It is even, it is subsequently poured into agitated kettle and obtains mixture；
2) water-reducing agent is weighed according to above-mentioned parts by weight and sodium hydroxide is added in load weighted water, and mix slowly,
Sodium hydroxide dissolution is set sufficiently to obtain solution；
3) solution that step 2) prepares slowly is poured into the mixture of step 1) being prepared, and stirred at a slow speed,
30s~50s is then quickly stirred, then is stirred at a slow speed until forming uniform slurry in agitated kettle；
4) foaming agent is poured into rapidly in the slurry that step 3) obtains, and quickly discharged die-filling and quiet after 6~8s of stirring
It sets and gets angry；
5) 2~2.5h excision is higher by the crust of mould part, is then allowed to stand 1d demoulding, is put into standard curing room maintenance i.e.
Obtain the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.
Application of the high-strength alkali-activated carbonatite air entrained concrete of above-mentioned non-evaporating pressure in terms of the field of building materials.
Beneficial effect：Compared with the existing technology, the present invention has the following advantages that：The present invention overcomes traditional air entrained concrete
Some disadvantages, a kind of non-evaporating high-strength alkali-activated carbonatite air-mixed concrete pieces of pressure are provided.By replacing normal silicate with high alumina cement
Cement, to obtain higher early strength；Add a large amount of miberal powder again to improve the later strength of air-mixed concrete pieces；Paring stone
The addition of cream can then increase brilliant glue ratio, adjust setting time and control is shunk, and water absorption rate is also in the normal range.Institute of the present invention
The air entrained concrete bulk strength of production is high, and drying shrinkage and water absorption rate are low, and simple process, eliminates steam pressure process,
Energy-saving aspect also has very big advantage.
Detailed description of the invention
The 3d SEM of Fig. 1 embodiment 1 schemes；
The 28d SEM of Fig. 2 embodiment 1 schemes.
Specific embodiment
According to following embodiments, the present invention may be better understood.However, as it will be easily appreciated by one skilled in the art that real
It applies specific material proportion, process conditions and its result described in example and is merely to illustrate the present invention, without that should will not limit
The present invention described in detail in claims processed.
Building gypsum in Examples 1 to 5 is commercially available power plant desulfurization by-product desulphurization gypsum calcination product；High alumina cement is
Commercially available CA-50 type cement；Water-reducing agent uses commercially available PCA type high-efficiency water-reducing agent of poly-carboxylic acid；Foaming agent is commercially available hydrogen peroxide, the dioxygen
The concentration of hydrogen peroxide of water is 30%.
The preparation of the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of embodiment 1
1) 200 parts of building gypsums, 200 parts of high alumina cements, 320 parts of miberal powders and 80 parts of nickel ground-slag material are weighed to be mixed and stirred for
It is even, it is subsequently poured into agitated kettle and obtains mixture；
2) it weighs in 8 parts of water-reducing agents and the water of 6.4 parts of 223.2 parts of sodium hydroxides additions, and mixes slowly, make sodium hydroxide
Dissolution sufficiently obtains solution；
3) solution that step 2) prepares slowly is poured into the mixture of step 1) being prepared, and stirred at a slow speed,
Then quickly agitation 30s is stirred at a slow speed until forming uniform slurry in agitated kettle again；
4) 28 parts of foaming agents are poured into rapidly in the slurry that step 3) obtains, and quickly discharged die-filling and quiet after stirring 6s
It sets and gets angry；
5) it cuts off the crust for being higher by mould part after 2h, is then allowed to stand 1d demoulding, is put into standard curing room and conserves to obtain the final product
The non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.
The preparation of the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of embodiment 2
1) 200 parts of building gypsums, 280 parts of high alumina cements, 256 parts of miberal powders and 64 parts of nickel ground-slag material are weighed to be mixed and stirred for
It is even, it is subsequently poured into agitated kettle and obtains mixture；
2) it weighs in 8 parts of water-reducing agents and the water of 5.1 parts of 223.2 parts of sodium hydroxides additions, and mixes slowly, make sodium hydroxide
Dissolution sufficiently obtains solution；
3) solution that step 2) prepares slowly is poured into the mixture of step 1) being prepared, and stirred at a slow speed,
Then quickly agitation 50s is stirred at a slow speed until forming uniform slurry in agitated kettle again；
4) 24 parts of foaming agents are poured into rapidly in the slurry that step 3) obtains, and quickly discharged die-filling and quiet after stirring 8s
It sets and gets angry；
5) crust for being higher by mould part is cut off after 2.5h, is then allowed to stand 1d demoulding, is put into standard curing room maintenance i.e.
Obtain the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.
Embodiment 3
1) 280 parts of building gypsums, 200 parts of high alumina cements, 256 parts of miberal powders and 64 parts of nickel ground-slag material are weighed to be mixed and stirred for
It is even, it is subsequently poured into agitated kettle and obtains mixture；
2) it weighs in 6 parts of water-reducing agents and the water of 5.1 parts of 223.2 parts of sodium hydroxides additions, and mixes slowly, make sodium hydroxide
Dissolution sufficiently obtains solution；
3) solution that step 2) prepares slowly is poured into the mixture of step 1) being prepared, and stirred at a slow speed,
Then quickly agitation 40s is stirred at a slow speed until forming uniform slurry in agitated kettle again；
4) 20 parts of foaming agents are poured into rapidly in the slurry that step 3) obtains, and quickly discharged die-filling and quiet after stirring 7s
It sets and gets angry；
5) it cuts off the crust for being higher by mould part after 2h, is then allowed to stand 1d demoulding, is put into standard curing room and conserves to obtain the final product
The non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.
Embodiment 4
1) 200 parts of building gypsums, 240 parts of high alumina cements, 288 parts of miberal powders and 72 parts of nickel ground-slag material are weighed to be mixed and stirred for
It is even, it is subsequently poured into agitated kettle and obtains mixture；
2) it weighs in 10 parts of water-reducing agents and the water of 5.8 parts of 223.2 parts of sodium hydroxides additions, and mixes slowly, make hydroxide
Sodium dissolution sufficiently obtains solution；
3) solution that step 2) prepares slowly is poured into the mixture of step 1) being prepared, and stirred at a slow speed,
Then quickly agitation 30s is stirred at a slow speed until forming uniform slurry in agitated kettle again；
4) 24 parts of foaming agents are poured into rapidly in the slurry that step 3) obtains, and quickly discharged die-filling and quiet after stirring 6s
It sets and gets angry；
5) it cuts off the crust for being higher by mould part after 2h, is then allowed to stand 1d demoulding, is put into standard curing room and conserves to obtain the final product
The non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.
Embodiment 5
1) 240 parts of building gypsums, 240 parts of high alumina cements, 256 parts of miberal powders and 64 parts of nickel ground-slag material are weighed to be mixed and stirred for
It is even, it is subsequently poured into agitated kettle and obtains mixture；
2) it weighs in 7 parts of water-reducing agents and the water of 5.1 parts of 223.2 parts of sodium hydroxides additions, and mixes slowly, make sodium hydroxide
Dissolution sufficiently obtains solution；
3) solution that step 2) prepares slowly is poured into the mixture of step 1) being prepared, and stirred at a slow speed,
Then quickly agitation 50s is stirred at a slow speed until forming uniform slurry in agitated kettle again；
4) 26 parts of foaming agents are poured into rapidly in the slurry that step 3) obtains, and quickly discharged die-filling and quiet after stirring 8s
It sets and gets angry；
5) crust for being higher by mould part is cut off after 2.5h, is then allowed to stand 1d demoulding, is put into standard curing room maintenance i.e.
Obtain the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure.
Experimental example
By experimental test, the air-mixed concrete pieces dry density that above 5 kinds of embodiments prepare is respectively 694kg/m3、
687kg/m3、667kg/m3、683kg/m3And 675kg/m3, 7d compression strength is respectively 3.65MPa, 4.11MPa, 4.03MPa,
3.98MPa and 3.92MPa, early stage are mechanical property with higher, and water absorption rate is also in normal range.It is tested by SEM
(Fig. 1 and Fig. 2) is as can be seen that test specimen just generates a large amount of dihydrate gypsum, ettringite and C-S-H condensation, mutual glue in early days
Knot makes test specimen early stage just have very high mechanical strength.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure, which is characterized in that it is prepared from the following raw materials according to parts by weight：
200 ~ 280 parts of building gypsum, 200 ~ 280 parts of high alumina cement, 256 ~ 320 parts of miberal powder, 64 ~ 80 parts of nickel slag, 5.1 ~ 6.4 parts of NaOH,
6 ~ 10 parts of water-reducing agent, 20 ~ 28 parts of foaming agent, 223.2 parts of water, the building gypsum are commercially available power plant desulfurization by-product desulfurized gypsum
Calcination product, the high alumina cement are commercially available CA-50 type cement, and the water-reducing agent uses high efficiency water reducing agent；Foaming agent is commercially available
Hydrogen peroxide, the concentration of hydrogen peroxide of the hydrogen peroxide are 30%；The preparation of the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of described one kind
Method includes the following steps：
1）Building gypsum, high alumina cement, miberal powder and nickel ground-slag material is weighed according to above-mentioned parts by weight to be mixed and stirred for uniformly, so
After pour into agitated kettle and obtain mixture；
2）Water-reducing agent is weighed according to above-mentioned parts by weight and sodium hydroxide is added in load weighted water, and is mixed slowly, and hydrogen is made
Sodium oxide molybdena dissolution sufficiently obtains solution；
3）By step 2）The solution prepared slowly pours step 1 into）The mixture being prepared in, and stir at a slow speed, then
Quickly agitation 30s ~ 50s, then stir at a slow speed until forming uniform slurry in agitated kettle；
4）Foaming agent is poured into rapidly step 3）In obtained slurry, and quickly discharge die-filling, and stand hair after 6 ~ 8s of stirring
Gas；
5）2 ~ 2.5h cuts off the crust for being higher by mould part, is then allowed to stand 1d demoulding, is put into standard curing room and conserves and exempt to obtain the final product
The high-strength alkali-activated carbonatite air entrained concrete of steam pressure.
2. the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of one kind according to claim 1, which is characterized in that the non-evaporating pressure is high
Highly basic excitation air entrained concrete is prepared from the following raw materials according to parts by weight：200 parts of building gypsum, 280 parts of high alumina cement, miberal powder
256 parts, 64 parts of nickel slag, 5.1 parts of NaOH, 8 parts of water-reducing agent, 24 parts of foaming agent, 223.2 parts of water.
3. the preparation method of the non-evaporating high-strength alkali-activated carbonatite air entrained concrete of pressure of one kind described in claim 1, which is characterized in that including
Following steps：
1）Building gypsum, high alumina cement, miberal powder and nickel ground-slag material is weighed according to above-mentioned parts by weight to be mixed and stirred for uniformly, so
After pour into agitated kettle and obtain mixture；
2）Water-reducing agent is weighed according to above-mentioned parts by weight and sodium hydroxide is added in load weighted water, and is mixed slowly, and hydrogen is made
Sodium oxide molybdena dissolution sufficiently obtains solution；
3）By step 2）The solution prepared slowly pours step 1 into）The mixture being prepared in, and stir at a slow speed, then
Quickly agitation 30s ~ 50s, then stir at a slow speed until forming uniform slurry in agitated kettle；
4）Foaming agent is poured into rapidly step 3）In obtained slurry, and quickly discharge die-filling, and stand hair after 6 ~ 8s of stirring
Gas；
5）2 ~ 2.5h cuts off the crust for being higher by mould part, is then allowed to stand 1d demoulding, is put into standard curing room and conserves and exempt to obtain the final product
The high-strength alkali-activated carbonatite air entrained concrete of steam pressure.
4. described in any item non-evaporating high-strength alkali-activated carbonatite air entrained concrete the answering in terms of the field of building materials of pressure of claim 1 ~ 3
With.
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| CN109574701A (en) * | 2018-12-07 | 2019-04-05 | 江苏博拓新型建筑材料有限公司 | One kind exempting from pressure and steams nickel slag porous brick and preparation method thereof |
| CN110734300A (en) * | 2019-10-09 | 2020-01-31 | 湖南工程学院 | aerated concrete blocks and preparation process thereof |
| CN110642585B (en) * | 2019-10-09 | 2021-10-22 | 湖南工程学院 | Aerated concrete block and preparation process thereof |
| CN111943548A (en) * | 2020-03-16 | 2020-11-17 | 江苏奥莱特新材料股份有限公司 | Steam-pressure-free concrete active powder for PHC pipe pile and preparation method thereof |
| CN112266264B (en) * | 2020-11-09 | 2022-12-13 | 河南兴安新型建筑材料有限公司 | Aerated concrete based on synergistic effect of alkali excitation and accelerated carbonization and preparation method thereof |
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