CN107902684A - The application of a kind of aluminium hydrate nano slurry as early strength agent in cement-based material and preparation method thereof - Google Patents
The application of a kind of aluminium hydrate nano slurry as early strength agent in cement-based material and preparation method thereof Download PDFInfo
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- CN107902684A CN107902684A CN201711167641.6A CN201711167641A CN107902684A CN 107902684 A CN107902684 A CN 107902684A CN 201711167641 A CN201711167641 A CN 201711167641A CN 107902684 A CN107902684 A CN 107902684A
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- aluminium hydrate
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- 239000002002 slurry Substances 0.000 title claims abstract description 48
- 239000004568 cement Substances 0.000 title claims abstract description 40
- XFBXDGLHUSUNMG-UHFFFAOYSA-N alumane;hydrate Chemical compound O.[AlH3] XFBXDGLHUSUNMG-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000243 solution Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 13
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 159000000013 aluminium salts Chemical class 0.000 claims abstract description 9
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 6
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 239000012266 salt solution Substances 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 2
- 229940037003 alum Drugs 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 21
- 238000007906 compression Methods 0.000 abstract description 21
- 239000004411 aluminium Substances 0.000 abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 12
- 229910021653 sulphate ion Inorganic materials 0.000 abstract description 12
- 239000004566 building material Substances 0.000 abstract description 2
- 239000008367 deionised water Substances 0.000 description 12
- 229910021641 deionized water Inorganic materials 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
- 229910052925 anhydrite Inorganic materials 0.000 description 9
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 8
- 235000011941 Tilia x europaea Nutrition 0.000 description 8
- 239000004571 lime Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 238000001291 vacuum drying Methods 0.000 description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 7
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 7
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 7
- 229940080314 sodium bentonite Drugs 0.000 description 7
- 229910000280 sodium bentonite Inorganic materials 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 6
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 6
- 229910002651 NO3 Inorganic materials 0.000 description 4
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000006911 nucleation Effects 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 239000006071 cream Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 229940092782 bentonite Drugs 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/34—Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/14—Hardening accelerators
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Application the present invention provides a kind of preparation method of aluminium hydrate nano slurry and as early strength agent in cement-based material, belongs to building material field.The preparation method is to be dissolved aluminium salt and ammonium hydroxide respectively as solvent using water or organic solvent, prepare aluminum salt solution and ammonia spirit；Then two kinds of solution are poured into the quick-fried formula of full back-mixing into reacting in nuclear reactor at the same time；Obtained liquid is poured into reaction kettle after completion of the reaction, is reacted under hot conditions；Aluminium hydrate nano slurry is made to neutrality in centrifuge washing after reaction.The present invention prepares aluminium hydrate nano slurry and applies in cement-based material, under the conditions of the big ratio of mud, can significantly improve the compression strength of cement, solves the problems, such as that existing sulphate aluminium cement compression strength under the conditions of the big ratio of mud cannot be met the requirements.
Description
Technical field
The present invention relates to application and its preparation of a kind of aluminium hydrate nano slurry as early strength agent in cement-based material
Method, belongs to building material field.
Background technology
The mineral composition of sulphoaluminate cement clinker mainly include anhydrous calcium sulphoaluminate (C4A3S), dicalcium silicate (β-
C2S), the mineral such as tetra calcium aluminoferrite (C4AF).Sulphate aluminium cement has many excellent performances, such as low temperature hydrated performance and compared with
Good corrosion resistance etc..The ratio of mud scope that cement-based material is used for when repairing and reinforcement is applied is 0.5~1.5, the big ratio of mud
Under the conditions of, the compression strength of sulphoaluminate cement base material cannot be met the requirements.
In recent years, more and more scholars are such as strong to improve in building field by the materials application with nanostructured
The performance of degree, durability etc..For example, preparation and its shrinkage performance of the elementary nano-concretes of Li Wei, Zhu Fusheng, Wang Xiao
Study [J] Northeastern University's journals (natural science edition), 2017,38 (8):1173-1177. mixed in mechanical property test
1.0% Nano-meter SiO_22, there is situation about going up by a relatively large margin in the compression strength of test specimen；Adding 1.5% Nano-meter CaCO33When, resistance to compression
Also there is situation about significantly rising in intensity.
Aluminium hydroxide is one of hydrated product of sulphate aluminium cement, in theory using nano-aluminum hydroxide as seed crystal material
Promote the aquation of sulphate aluminium cement, there is preferable effect.
Know by inspection information and document, there is no at present correlation on aluminium hydrate nano material as early strength agent in sulphur aluminium
Application in acid salt cement sill and preparation method thereof.
The content of the invention
The object of the present invention is to provide a kind of application of aluminium hydrate nano material as early strength agent in cement-based material
And preparation method thereof.The present invention prepares aluminium hydrate nano slurry and applies in cement-based material, can be in big ratio of mud condition
Under, the compression strength of cement is significantly improved, solving existing sulphate aluminium cement, compression strength cannot under the conditions of the big ratio of mud
The problem of meeting the requirements.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of preparation method of aluminium hydrate nano slurry, first by the use of water or organic solvent as solvent, dissolves aluminium respectively
Salt and ammonium hydroxide, prepare aluminum salt solution and ammonia spirit；Then two kinds of solution are poured into the quick-fried formula of full back-mixing into nuclear reactor at the same time
Reaction；Obtained liquid is poured into reaction kettle after completion of the reaction, 2~72h is reacted at 110~200 DEG C；After reaction from
The heart is washed to neutrality, and aluminium hydrate nano slurry is made.
Preferably, the organic solvent is ethanol, isopropanol, butanol, acetone, ethanol water, isopropyl acetone aqueous solution, fourth
One of which in alcohol solution, aqueous acetone solution.
Preferably, the aluminium salt is the one of which in aluminium chloride, aluminum sulfate, aluminum nitrate, alum.
Preferably, the aluminum salt solution concentration is 0.01~20mol/L, and ammonia spirit concentration is 0.02~15mol/L, two
Person mixes in equal volume.
Preferably, the aluminum salt solution concentration is 0.2mol/L, and ammonia spirit concentration is 2mol/L~5mol/L, both etc.
Volume mixture.
Preferably, the mass fraction of ammonium hydroxide used is 25%~28%.
Preferably, two kinds of solution of the aluminium salt and ammonium hydroxide in the quick-fried formula of full back-mixing into reacting 2~3min in nuclear reactor.
Preferably, the reaction kettle reacts at 120~160 DEG C.
The aluminium hydrate nano slurry prepared according to above-mentioned preparation method.
The application of aluminium hydrate nano slurry prepared by above-mentioned preparation method as early strength agent in cement-based material.
Preferably, the aluminium hydrate nano slurry of above-mentioned preparation is added by the 0.1%~10% of sulphate aluminium cement, and will
Aluminium hydrate nano slurry is dispersed in after ultrasonic disperse 5min under 100W power in naphthalene water reducer solution.
Preferably, the ratio of mud of prepared cement is 0.29~1.5, more preferably 0.8.
Preferably, the mass fraction of naphthalene water reducer solution used is 0.05%~5% in above application.
Compared with prior art, beneficial effects of the present invention are：
(1) present invention prepare aluminium hydrate nano slurry method it is easy to operate, it is raw materials used for aluminium salt, organic solvent,
Ammonium hydroxide, raw material are easy to get, and cost is low, and reproducible.
(2) aluminium hydrate nano slurry prepared by the present invention is added in cement-based material as early strength agent, can significantly carry
The early strength of high cement, has filled up the blank that aluminium hydroxide is applied to building field as early strength agent, has had wide application
Prospect.
Brief description of the drawings
Fig. 1 is the XRD diagram of the aluminium hydroxide slurry prepared in the embodiment of the present invention under different ammonia concns.
Embodiment
With reference to embodiment, the present invention is described in further detail.
Raw material used, unless otherwise instructed, are commercially available in following embodiments, and ammonium hydroxide used is pure to analyze.
Embodiment 1
The preparation process of the aluminium hydrate nano slurry of the present embodiment is as follows：
Weigh 37.52g Al (NO3)3For stirring and dissolving after deionized water, 0.2mol/L is made in 500mL volumetric flasks in constant volume
Aluminum nitrate solution；The ammonium hydroxide stirring and dissolving that measurement 72.46mL mass fractions are 26% is after deionized water, constant volume to 500mL
In volumetric flask, the ammonia spirit of 2mol/L is made.Two kinds of solution are mixed rapidly in full back-mixing explosive nucleation reactor, instead
3min is answered, then slurries are poured into high-temperature high-pressure reaction kettle, 24h is reacted in 120 DEG C of vacuum drying chamber, is taken after cooling
Go out, afterwards with deionized water centrifuge washing 2 times, be neutrality to pH value, obtain aluminium hydrate nano slurry, take part size, use
In vacuum drying, the solid content for obtaining slurry is 9.722%.
Sulphoaluminate cement clinker 279g, anhydrite 208.125g, quick lime 69.375g, sodium bentonite 43.5g, receives
The solid total amount of folding of rice aluminium hydroxide slurry is the 4% of sulphoaluminate cement clinker, anhydrite and Lime Quality.By nano pulp
Be dissolved in 480ml mass fractions be 0.5% naphthalene water reducer solution in, stir and ultrasound after five minutes, by itself and clinker, admant
Cream, lime and sodium bentonite mixing, pour into mould molding.
Test result indicates that the above-mentioned sulphate aluminium cement being prepared, the compression strength of its 4h improves 23.54%, 1d
Compression strength improve 69.93%, 7d compression strength improve 14.68%.
Embodiment 2
The preparation process of the aluminium hydrate nano slurry of the present embodiment is as follows：
Weigh 37.52g Al (NO3)3For stirring and dissolving after deionized water, 0.2mol/L is made in 500mL volumetric flasks in constant volume
Aluminum nitrate solution；The ammonium hydroxide stirring and dissolving that measurement 108.70mL mass fractions are 25% is after deionized water, constant volume to 500mL
In volumetric flask, the ammonia spirit of 3mol/L is made.Two kinds of solution are mixed rapidly in full back-mixing explosive nucleation reactor, instead
3min is answered, then pours into slurries in high-temperature high-pressure reaction kettle, 24h is reacted in 120 DEG C of vacuum drying chamber, is taken after cooling
Go out, afterwards with deionized water centrifuge washing 3 times, be neutrality to pH value, obtain aluminium hydrate nano slurry, take part size, use
In vacuum drying, the solid content for obtaining slurry is 13.099%.
Sulphoaluminate cement clinker 279g, anhydrite 208.125g, quick lime 69.375g, sodium bentonite 43.5g, receives
The solid total amount of folding of rice aluminium hydroxide slurry is the 4% of sulphoaluminate cement clinker, anhydrite and Lime Quality.By nano pulp
Be dissolved in 480ml mass fractions be 0.5% naphthalene water reducer solution in, stir and ultrasound after five minutes, by itself and clinker, admant
Cream, lime and sodium bentonite mixing, pour into mould molding.
Test result indicates that the above-mentioned sulphate aluminium cement being prepared, the compression strength of its 4h improves 30.19%, 1d
Compression strength improve 31.16%, 7d compression strength improve 63.36%.
Embodiment 3
The preparation process of the aluminium hydrate nano slurry of the present embodiment is as follows：
Weigh 37.52g Al (NO3)3For stirring and dissolving after deionized water, 0.2mol/L is made in 500mL volumetric flasks in constant volume
Aluminum nitrate solution；The ammonium hydroxide stirring and dissolving that measurement 144.93mL mass fractions are 25% is after deionized water, constant volume to 500mL
In volumetric flask, the ammonia spirit of 4mol/L is made.Two kinds of solution are mixed rapidly in full back-mixing explosive nucleation reactor, instead
3min is answered, then pours into slurries in high-temperature high-pressure reaction kettle, 24h is reacted in 120 DEG C of vacuum drying chamber, is taken after cooling
Go out, afterwards with deionized water centrifuge washing 3 times, be neutrality to pH value, obtain aluminium hydrate nano slurry, take part size, use
In vacuum drying, the solid content for obtaining slurry is 19.048%.
Sulphoaluminate cement clinker 279g, anhydrite 208.125g, quick lime 69.375g, sodium bentonite 43.5g, receives
The solid total amount of folding of rice aluminium hydroxide slurry is the 4% of sulphoaluminate cement clinker, anhydrite and Lime Quality.By nano pulp
Be dissolved in the naphthalene water reducer solution of 480ml0.5%, stir and ultrasound after five minutes, by itself and clinker, anhydrite, lime and sodium
Base bentonite mixes, and pours into mould molding.
Test result indicates that the above-mentioned sulphate aluminium cement being prepared, the compression strength of its 4h improves 20.55%, 1d
Compression strength improve 90.01%, 7d compression strength improve 41.76%.
Embodiment 4
The preparation process of the aluminium hydrate nano slurry of the present embodiment is as follows：
Weigh 37.52g Al (NO3)3For stirring and dissolving after deionized water, 0.2mol/L is made in 500mL volumetric flasks in constant volume
Aluminum nitrate solution；The ammonium hydroxide stirring and dissolving that measurement 181.16mL mass fractions are 25% is after deionized water, constant volume to 500mL
In volumetric flask, the ammonia spirit of 5mol/L is made.Two kinds of solution are mixed rapidly in full back-mixing explosive nucleation reactor, instead
3min is answered, then pours into slurries in high-temperature high-pressure reaction kettle, 24h is reacted in 120 DEG C of vacuum drying chamber, is taken after cooling
Go out, afterwards with deionized water centrifuge washing 3 times, be neutrality to pH value, obtain aluminium hydrate nano slurry, take part size, use
In vacuum drying, the solid content for obtaining slurry is 23.188%.
Sulphoaluminate cement clinker 279g, anhydrite 208.125g, quick lime 69.375g, sodium bentonite 43.5g, receives
The solid total amount of folding of rice aluminium hydroxide slurry is the 4% of sulphoaluminate cement clinker, anhydrite and Lime Quality.By nano pulp
Be dissolved in 480ml mass fractions be 0.5% naphthalene water reducer solution in, stir and ultrasound after five minutes, by itself and clinker, admant
Cream, lime and sodium bentonite mixing, pour into mould molding.
Test result indicates that the above-mentioned sulphate aluminium cement being prepared, the compression strength of its 4h improves 50.57%, 1d
Compression strength improve 74.98%, 7d compression strength improve 50.31%.
The constituent of sulphate aluminium cement used is as shown in table 1 in above-described embodiment.
The composition (%wt) of 1 sulphate aluminium cement of table
The compression strength of the sulphoaluminate cement base material each age prepared in above-described embodiment is as shown in table 2, wherein, ginseng
Represented than sample without addition aluminium hydrate nano slurry, Al (OH)3-2、Al(OH)3-3、Al(OH)3- 4 and Al (OH)3- 5 points
The aluminium hydrate nano slurry synthesized when what Biao Shi be do not added for ammonia spirit solubility is 2M, 3M, 4M and 5M.
The compression strength (MPa) of 2 sulphoaluminate cement base material each age of table
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of preparation method of aluminium hydrate nano slurry, it is characterised in that first by the use of water or organic solvent as solvent, divide
Not Rong Xie aluminium salt and ammonium hydroxide, prepare aluminum salt solution and ammonia spirit；Then two kinds of solution are poured into the quick-fried formula of full back-mixing at the same time to be nucleated
Reacted in reactor；Obtained liquid is poured into reaction kettle after completion of the reaction, 2 ~ 72h is reacted at 110 ~ 200 DEG C；Reaction knot
Aluminium hydrate nano slurry is made to neutrality in centrifuge washing after beam.
2. the preparation method of a kind of aluminium hydrate nano slurry according to claim 1, it is characterised in that described organic molten
Agent is its in ethanol, isopropanol, butanol, acetone, ethanol water, isopropyl acetone aqueous solution, butanol aqueous solution, aqueous acetone solution
Middle one kind.
3. the preparation method of a kind of aluminium hydrate nano slurry according to claim 1, it is characterised in that the aluminium salt is
One of which in aluminium chloride, aluminum sulfate, aluminum nitrate, alum.
4. the preparation method of a kind of aluminium hydrate nano slurry according to claim 1, it is characterised in that the aluminium salt is molten
Liquid concentration is 0.01 ~ 20mol/L, and ammonia spirit concentration is 0.02 ~ 15mol/L, both mix in equal volume.
5. the preparation method of a kind of aluminium hydrate nano slurry according to claim 1, it is characterised in that the aluminium salt is molten
Liquid concentration is 0.2mol/L, and ammonia spirit concentration is 2mol/L ~ 5mol/L, both mix in equal volume.
6. the preparation method of a kind of aluminium hydrate nano slurry according to claim 1, it is characterised in that ammonium hydroxide used
Mass fraction is 25% ~ 28%.
A kind of 7. preparation method of aluminium hydrate nano slurry according to claim 1, it is characterised in that the aluminium salt and
Two kinds of solution of ammonium hydroxide are in the quick-fried formula of full back-mixing into reacting 2 ~ 3min in nuclear reactor.
A kind of 8. preparation method of aluminium hydrate nano slurry according to claim 1, it is characterised in that the reaction kettle
Reacted at 120 ~ 160 DEG C.
9. the aluminium hydrate nano slurry prepared according to claim 1 ~ 8 any one of them preparation method.
10. existed according to aluminium hydrate nano slurry prepared by claim 1 ~ 8 any one of them preparation method as early strength agent
Application in cement-based material.
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