CN102627426A - Slag-coal ash compound solid exciter and preparation method thereof - Google Patents
Slag-coal ash compound solid exciter and preparation method thereof Download PDFInfo
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- CN102627426A CN102627426A CN201210091991XA CN201210091991A CN102627426A CN 102627426 A CN102627426 A CN 102627426A CN 201210091991X A CN201210091991X A CN 201210091991XA CN 201210091991 A CN201210091991 A CN 201210091991A CN 102627426 A CN102627426 A CN 102627426A
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- slag
- exciter
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- exciting agent
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Abstract
The invention relates to a slag-coal ash compound solid exciter and a preparation method thereof, and belongs to the field of cement and concrete building materials. The preparation method for the slag-coal ash compound solid exciter comprises the steps as follows: carrying out compound modification on sodium hydroxide, sodium carbonate and low-modulus liquid water glass as well as a modifying agent-polyacrylamide or polyphosphate, ageing and digesting in vacuum condition, drying and grinding. The slag-coal ash compound solid exciter overcomes the defects of poor stability of the traditional solid base exciter and difficult field construction of the traditional liquid exciter, has the advantages of good stability, unsuitability for moisture absorption or air slaking and a wide range of material sources, and can be directly mixed and ground with the slag and the coal ash to prepare high-strength hydraulic cementing materials. The cement can be fully replaced with the cementing material obtained by the excitation of the exciter in the concrete, so that the concrete strength can be enhanced by about 20-30%, and the concrete durability can be improved.
Description
Technical field
The present invention relates to a kind of slag-fly ash composite solid exciting agent and working method thereof, belong to cement, concrete building material field.
Background technology
Flyash and slag micropowder are the most popular active mineral admixtures of current engineering circle; Add flyash and slag micropowder on coagulation simultaneously, " serviceability and the strength advantage complementary effect " of the two makes concrete have good workability, impermeability and pumpability.But in concrete, add supplementary cementitious materials such as a large amount of flyash, breeze; Particularly under the situation of volume big (＞50%); Ultimate compression strength on the coagulation, particularly early anti pressured intension are often very low, in this case; The hydration activity of supplementary cementitious material in how exciting on the coagulation improves concrete early strength and becomes the key of more extensively promoting the supplementary cementitious material use.
At present, excite flyash, the active method of gelling material such as slag has obtained some achievements in the application of mineral admixture, especially aspect the development of alkali-activator.Existing patent or document show, the most effectively NaOH and the composite solution system of liquid sodium silicate in the alkali-activator, but the liquid exciting agent has shortcomings such as instability, use inconvenience, and can not direct production go out alkali and excite gelling material.And many in the solid exciting agent be main with NaOH, KOH, NaOH, KOH very easily absorb the moisture deliquescence in air, levigate jointly with gelling material, and the hydration reaction of partial alkali-gelling material can take place, and cause alkali binding material to lose efficacy very soon.If use the solid base metal silicate, because their solubleness in water is little and dissolution rate is very slow, mineral admixture is excited to be difficult to be effective separately, even use the instant preferably powdery sodium silicate of solvability to excite, also be difficult to be effective.
Summary of the invention
It is strong, stable in the air, remarkable to slag powders, flyash stimulation effect to the purpose of this invention is to provide a kind of alkalescence, and with low cost, uses, a kind of slag-fly ash composite solid exciting agent and the working method thereof of convenient for storing.
Technical solution:
Slag-fly ash composite solid exciting agent provided by the invention comprises the component by weight percentage of following raw materials according: sodium hydroxide 10～25%, yellow soda ash 10～25%, low modulus liquid soluble glass 55～65%, properties-correcting agent 0.2～0.5%.
Said properties-correcting agent is SEPIGEL 305 or poly-phosphate or the mixture of the two.
Said low modulus liquid soluble glass is a modulus 2.5～2.8, the water glass of degree Beaume 40～50 degree.
The present invention provides a kind of working method of slag-fly ash composite solid exciting agent, comprises following method steps:
(1) by weight percentage: with sodium hydroxide 10～25%, yellow soda ash 10～25%, low modulus liquid soluble glass 55～65%, properties-correcting agent 0.2～0.5% mixes, is stirred to the formation uniform solution;
(2) uniform solution with preparation in the step (1) places under the vacuum condition, and 24～48h is cleared up in ageing;
(3) under vacuum condition, the solution after ageing in the step (2) cleared up is 140～170 ℃ of dryings, and after the drying, grinding to specific surface area is not less than 300m
2/ kg promptly makes the composite solid exciting agent.
Sodium hydroxide according to the invention, low modulus liquid soluble glass, sodium carbonate components are slag-fly ash mixed system aquation; Competent OH-ion is provided on the one hand; Make the system pH value improve, hydration reaction quickens, and slag, flyash mixed system are had early strength function preferably; Make the slag Ca (OH) that aquation produces in basic soln on the other hand
2Further carry out pozzolanic reaction, guaranteed the later strength of system with fly vitreous.
Said yellow soda ash also has certain diminishing function except that having the activity excitation effect, thereby improves the flowing property of slag, flyash mixed system;
The effect that said properties-correcting agent SEPIGEL 305 or poly-phosphate play modification, stablize composite solid alkalescence ability polycomponent alkali.
Advantage of the present invention is: this exciting agent is to utilize that various ingredients is composite modified to form; Poor stability, the difficult drawback of liquid exciting agent site operation of solid alkali exciting agent at present commonly used have at first been overcome; Simultaneously the compound back of polycomponent can excite the lateral reactivity of various types of slags and flyash effectively because the synergistic effect of each component makes the exciting agent excitability after compound strengthen; Use slag-fly ash composite solid exciting agent of the present invention to produce mineral admixture or concrete; Under the condition that guarantees same intensity; Can make slag powders, the flyash total volume in cement, concrete reach more than 90% of starting material composition; Utilize industrial residue in large quantities, reduced cement consumption significantly, realized the target of energy-saving and emission-reduction.
Description of drawings
Fig. 1 starches the 3d ESEM collection of illustrative plates in the length of time only for slag-fly ash gel material in detecting;
Fig. 2 starches the 28d ESEM collection of illustrative plates in the length of time only for slag-fly ash gel material in detecting;
Fig. 3 starches the 3d XRD diffracting spectrum in the length of time only for slag-fly ash gel material in detecting;
Fig. 4 starches the 28d XRD diffracting spectrum in the length of time only for slag-fly ash gel material in detecting.
Embodiment
Form series by the listed raw material of table 1 and carry out the preparation of slag-fly ash composite solid exciting agent.
The assembly of table 1 slag-fly ash composite solid exciting agent
Annotate: 1) material purity is technical grade, liquid soluble glass in the table:
Embodiment 1: modulus 2.5, degree Beaume 40 degree;
Embodiment 2: modulus 2.6, degree Beaume 45 degree;
Embodiment 3: modulus 2.7, degree Beaume 48 degree.
2) after each component of embodiment mixed in the table, ageing was 36 hours under vacuum condition, and is dry under 150 ℃, and dry back grinding is to specific surface area 305-310m
2/ kg obtains pressed powder, uses as the finished product exciting agent.
The performance test of slag-fly ash composite solid exciting agent:
1, the slag-fly ash gelling material is starched form only, is constituted and detect
Composite solid exciting agent 24g with slag powders 180g, flyash 120g and above embodiment 2; Mix after adding water 96g; The die trial of packing into, form removal after 1 day changes standard curing room over to; Maintenance is processed after 3 days, 28 days and is detected appearance, handles and observes microtexture detection and X-ray diffraction detection under the laggard line scanning Electronic Speculum.Detected result is seen Fig. 1, Fig. 2, Fig. 3 and Fig. 4.Fig. 1, Fig. 2 starch 3d, the 28d ESEM collection of illustrative plates in the length of time only for the slag-fly ash gelling material, and Fig. 3, Fig. 4 starch 3d, the 28d XRD diffracting spectrum in the length of time only for the slag-fly ash gelling material.Synthesizing map 1, Fig. 3 can know; The slag-fly ash system early hydration product that is mixed with composite solid exciting agent of the present invention mainly is by being that main C-S-H gel is main with the floc sedimentation shape in pelletized form; Fly ash grain is wrapped in the hydrated product; And some fly ash grain surfaces are corroded, and are coupled to each other with hydrated product and are in the same place.Fig. 3, Fig. 4 show the prolongation along with hydration age; It is perfect that CSH number of gels showed increased and crystalline texture more become; Can find out that simultaneously to be with the C-S-H gel that master's hydrated product combines good, this good combination coacervate is being filled harmful space, makes the macropore minimizing; Porosity reduces, thereby improves the intensity and the weather resistance of matrix.
2, slag-fly ash cement mortar strength Performance Detection
With slag powders 270g, the composite solid exciting agent 45g of flyash 180g and above embodiment 1 (or the composite solid exciting agent 36g of embodiment 2, or the composite solid exciting agent 41g of embodiment 3); Standard sand 1350g; Mix the die trial of packing into, form removal after 1 day after adding suitable quantity of water (institute adds water is getting final product mortar fluidity more than the 180mm); Change standard curing room over to, maintenance is processed after 3 days and 28 days and is mixed composite solid exciting agent slag-fly ash cement mortar strength test samples respectively.
Detection method: after above-mentioned glue sand mixes, press GB/T 2419-2005 and measure mortar fluidity; When 3 days and the 28 day length of time, press the anti-folding and the compression strength value of GB/T 17671-1999 test intensity detection sample, and calculation result.
Table 2 has shown the intensity detection result; Can know the standard that composite solid exciting agent slag-fly ash cement mortar strength of the present invention can reach 325R composite Portland cement intensity of mixing; And its 28d intensity reaches the standard of 42.5 ordinary Portland cements; No matter this exciting agent is described, still flyash all there is good stimulation effect to slag.
Table 2 is mixed the strength detection result of composite solid exciting agent slag-fly ash
The application examples of slag-fly ash composite solid exciting agent
Can composite solid exciting agent of the present invention be applied in the concrete product.Certain concrete product plant uses the slag-fly ash gelling material that is mixed with slag-fly ash composite solid exciting agent to produce concrete member (C1); And with use 425 ordinary Portland cements to produce concrete members (C0) to contrast, concrete material mix proportion is as shown in table 3, wherein the composite solid exciting agent is embodiment 2 assembly; Volume is the 8wt% of gelling material; Gelling material is made up of slag powders, flyash, and S75 grade slag powder consumption is 60wt% in the gelling material, and II level flyash consumption is 40wt%.Adopt GB/T 50081-2002 standard method carrying out concrete strength to detect, adopt GB/T 50082-2009 standard method carrying out concrete impermeability and anti-freezing property to detect, its result sees table 4.
The every side's concrete mix of table 3 (Kg)
Table 4 concrete performance
Table 4 data presentation, slag-fly ash agglutination material concrete (C1) intensity index, anti-permeability performance and the anti-freezing property of mixing composite solid exciting agent of the present invention all are superior to contrasting concrete (C0) significantly.And the site operation effect shows: the slag-fly ash agglutination material concrete that mixes composite solid exciting agent of the present invention need not to change former concrete for making technology in structure manufacture; Workability satisfies construction requirement; Need bigger humidity than former maintenance when being (3d) maintenance in early days, need after final set, water moist curing.After the maintenance demoulding in 3 days, surface of concrete structure is bright and clean, closely knit, and color and luster is even, flawless, bubble, and smooth finish is far superior to contrast the member of concrete for making.The cost of composite solid exciting agent of the present invention adopts the slag-fly ash agglutination material concrete of composite solid exciting agent preparation of the present invention about 2200 yuan/ton, than not practicing thrift the about 15 yuan/m of cost with the portland cement concrete of composite solid exciting agent preparation of the present invention
3
This shows, composite solid exciting agent of the present invention is applied in the concrete, can not only utilize industrial residue in a large number; Reduce cement consumption, reduce cost, realize the target of energy-saving and emission-reduction; Can also improve concrete strength, increase concrete durability, guarantee construction quality better.
Claims (4)
1. a slag-fly ash composite solid exciting agent is characterized in that, comprises the component by weight percentage of following raw materials according: sodium hydroxide 10～25%, yellow soda ash 10～25%, low modulus liquid soluble glass 55～65%, properties-correcting agent 0.2～0.5%.
2. a kind of slag-fly ash composite solid exciting agent according to claim 1 is characterized in that, properties-correcting agent is SEPIGEL 305 or poly-phosphate or the mixture of the two.
3. a kind of slag-fly ash composite solid exciting agent according to claim 1 is characterized in that, low modulus liquid soluble glass is a modulus 2.5～2.8, the water glass of degree Beaume 40～50 degree.
4. the working method of a slag-fly ash composite solid exciting agent is characterized in that, comprises the steps:
(1) by weight percentage: with sodium hydroxide 10～25%, yellow soda ash 10～25%, low modulus liquid soluble glass 55～65%, properties-correcting agent 0.2～0.5% mixes, is stirred to the formation uniform solution;
(2) uniform solution with preparation in the step (1) places under the vacuum condition, and 24～48h is cleared up in ageing;
(3) under vacuum condition, the solution after ageing in the step (2) cleared up is 140～170 ℃ of dryings, and after the drying, grinding to specific surface area is not less than 300m
2/ kg promptly makes the composite solid exciting agent.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030592A (en) * | 2014-07-01 | 2014-09-10 | 把正春 | Method for preparing environment-friendly activation mineral material addition exciting agent of ferrochrome slag |
| CN104386937A (en) * | 2014-10-22 | 2015-03-04 | 中北大学 | Composite activator for coal ash baking-free bricks and preparation method and use method thereof |
| CN105461255A (en) * | 2015-11-27 | 2016-04-06 | 徐州工程学院 | Compound activator and preparation method and application thereof |
| CN106045361A (en) * | 2016-05-30 | 2016-10-26 | 张彭成 | Alkali slag concrete composite activator and preparation method of concrete mixture |
| CN109574609A (en) * | 2019-01-18 | 2019-04-05 | 安徽理工大学 | A method of alkali-activated carbonatite concrete shrinkage cracking is effectively relieved |
| CN111362631A (en) * | 2020-04-09 | 2020-07-03 | 华电国际电力股份有限公司朔州热电分公司 | Full-solid waste type alkali-activated concrete and preparation method thereof |
| CN113666706A (en) * | 2021-08-16 | 2021-11-19 | 成都精准混凝土有限公司 | Cement-based composite alkali-activated cementing material and preparation method thereof |
| CN115259702A (en) * | 2022-08-11 | 2022-11-01 | 武汉理工大学 | Slag fly ash-based alkali-activated cementing material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1167319A1 (en) * | 2000-05-29 | 2002-01-02 | Maquelri, S.L. | Process for making cementitious agglomerates using waste building and demolition materials and agglomerating them with a chemical additive |
| CN101051691A (en) * | 2007-05-14 | 2007-10-10 | 武汉理工大学 | Geo polymer base composite material double pole plate and its preparing method |
| CN101328029A (en) * | 2008-07-18 | 2008-12-24 | 桂林工学院 | Preparation of manganese slag groundmass geopolymer cementing material |
| CN101708983A (en) * | 2009-09-07 | 2010-05-19 | 中国地质大学（北京） | Burning-free geology polymer material of red mud coal ash and preparation method thereof |
| CN102180629A (en) * | 2011-01-27 | 2011-09-14 | 武汉理工大学 | Geopolymer taking stone coal vanadium extracted tailings as major raw materials and preparation method thereof |
| CN102219425A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Alkali-free liquid accelerating agent and preparation method thereof |
-
2012
- 2012-03-22 CN CN 201210091991 patent/CN102627426B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1167319A1 (en) * | 2000-05-29 | 2002-01-02 | Maquelri, S.L. | Process for making cementitious agglomerates using waste building and demolition materials and agglomerating them with a chemical additive |
| CN101051691A (en) * | 2007-05-14 | 2007-10-10 | 武汉理工大学 | Geo polymer base composite material double pole plate and its preparing method |
| CN101328029A (en) * | 2008-07-18 | 2008-12-24 | 桂林工学院 | Preparation of manganese slag groundmass geopolymer cementing material |
| CN101708983A (en) * | 2009-09-07 | 2010-05-19 | 中国地质大学（北京） | Burning-free geology polymer material of red mud coal ash and preparation method thereof |
| CN102180629A (en) * | 2011-01-27 | 2011-09-14 | 武汉理工大学 | Geopolymer taking stone coal vanadium extracted tailings as major raw materials and preparation method thereof |
| CN102219425A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Alkali-free liquid accelerating agent and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030592A (en) * | 2014-07-01 | 2014-09-10 | 把正春 | Method for preparing environment-friendly activation mineral material addition exciting agent of ferrochrome slag |
| CN104386937A (en) * | 2014-10-22 | 2015-03-04 | 中北大学 | Composite activator for coal ash baking-free bricks and preparation method and use method thereof |
| CN105461255A (en) * | 2015-11-27 | 2016-04-06 | 徐州工程学院 | Compound activator and preparation method and application thereof |
| CN106045361A (en) * | 2016-05-30 | 2016-10-26 | 张彭成 | Alkali slag concrete composite activator and preparation method of concrete mixture |
| CN106045361B (en) * | 2016-05-30 | 2019-08-13 | 张彭成 | Using the preparation method of the alkali-slag concrete of composite exciting agent |
| CN109574609A (en) * | 2019-01-18 | 2019-04-05 | 安徽理工大学 | A method of alkali-activated carbonatite concrete shrinkage cracking is effectively relieved |
| CN111362631A (en) * | 2020-04-09 | 2020-07-03 | 华电国际电力股份有限公司朔州热电分公司 | Full-solid waste type alkali-activated concrete and preparation method thereof |
| CN113666706A (en) * | 2021-08-16 | 2021-11-19 | 成都精准混凝土有限公司 | Cement-based composite alkali-activated cementing material and preparation method thereof |
| CN115259702A (en) * | 2022-08-11 | 2022-11-01 | 武汉理工大学 | Slag fly ash-based alkali-activated cementing material and preparation method thereof |
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