CN104803619A - Geopolymer composition and geopolymer material - Google Patents
Geopolymer composition and geopolymer material Download PDFInfo
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- CN104803619A CN104803619A CN201410037871.0A CN201410037871A CN104803619A CN 104803619 A CN104803619 A CN 104803619A CN 201410037871 A CN201410037871 A CN 201410037871A CN 104803619 A CN104803619 A CN 104803619A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention discloses a geopolymer composition and a geopolymer material. The geopolymer composition contains an alkaline excitant and fly ash, and the fly ash includes two or three of a component A, a component B and a component C according to different average particle sizes, wherein the average particle size of the component A is smaller than 5[mu]m, the average particle size of the component B is greater than 5[mu]m and not greater than 40[mu]m, and the average particle size of the component C is greater than 40[mu]m. The geopolymer material prepared from the geopolymer composition has high compressive strength and can meet application in the field of building engineering and the like.
Description
Technical field
The present invention relates to geopolymer formulation and geology polymer material.
Background technology
Along with the raising of people's environmental protection, awareness of saving energy and the regulation of national policy, all trades and professions all environmental protection, energy-conservation in strengthen research and development capabilities, to protect the environment of human lives better.
Geopolymer (Geopolymer) studies one of very active non-metallic material in recent years in the world.It is if clay, industrial residue or slag are for main raw material with silicon-containing solid material, through suitable art breading, by the class Novel Inorganic Polymers material that chemical reaction obtains under lower temperature conditions, can substitute cement for building, building the road, the field such as artificial island, prefabricated component, refractory materials.The many geopolymer raw material of current research is flyash.
Flyash is the solid waste that coal-fired electric field is discharged, and is one of industrial residue that quantity discharged is larger, if utilized, can greatly reduce it and stack occupation of land pollution.Flyash has the potential hydraulicity, replaces cement to reach required adhesive property etc., then if utilized except reducing the pollution of himself, highly energy-consuming, heavy-polluted cement can also be used less, realize environmental friendliness, therefore, the utilization of flyash is the important directions that current research is actively developed.
But in the prior art, the ultimate compression strength of geology polymer material also needs further improvement.
Summary of the invention
The object of this invention is to provide a kind of geopolymer formulation and the geology polymer material that can improve the ultimate compression strength of geology polymer material.
The present inventor is through experiment for several times and grope to find, when utilizing coal ash for manufacturing for geology polymer material, the particle size range of its flyash directly affects the ultimate compression strength of geology polymer material, when size distribution mode as flyash is identical, the ultimate compression strength of geology polymer material is lowered into non-linear increase with median size.On this basis, when utilizing coal ash for manufacturing for geology polymer material, compared with the geology polymer material that the flyash that the geology polymer material using the flyash of two or three size distribution to obtain and single particle size distribute is obtained, its ultimate compression strength will significantly improve further.
To achieve these goals, the invention provides a kind of geopolymer formulation, wherein, this geopolymer formulation contains alkali-activator and flyash, this flyash comprises the two or three in component A, B component and component C according to different median size, wherein, the median size of component A is less than 5 microns, the median size of B component is for being greater than 5 microns and being less than or equal to 40 microns, and the median size of component C is for being greater than 40 microns.
With the total amount of flyash for benchmark, the content of component A, B component and component C can be 0-98 % by weight independently of one another, and the content sum of component A, B component and component C is 100 % by weight.According to a kind of preferred implementation of the present invention, with the total amount of flyash for benchmark, the content of component A is 0-40 % by weight, is preferably 0-30 % by weight; The content of B component is 10-95 % by weight, is preferably 20-90 % by weight; The content of component C is 0-80 % by weight, be preferably 0-30 % by weight, and the content sum of component A, B component and component C is 100 % by weight.
Preferably, in component A, the flyash that particle diameter is less than 5 microns accounts for more than 70 % by weight of component A; More preferably, in component A, the flyash that particle diameter is less than 5 microns accounts for more than 75 % by weight of component A.In B component, particle diameter is less than 40 microns of flyash being greater than 5 microns and accounts for more than 70 % by weight of B component; More preferably, particle diameter is less than 40 microns of flyash being greater than 5 microns and accounts for more than 75 % by weight of B component.In component C, particle diameter is less than 300 microns of flyash being greater than 40 microns and accounts for more than 70 % by weight of component C; More preferably, particle diameter is less than 300 microns of flyash being greater than 40 microns and accounts for more than 75 % by weight of component C.According to this preferred implementation, the ultimate compression strength of obtained geology polymer material can be improved further.
Flyash is the solid waste produced after coal combustion, can comprise SiO
2, Al
2o
3, Fe
2o
3, the component such as CaO.
Component A, B component and component C can respectively by being ground to required particle size range and carrying out screening and obtain.
Preferably, the size distribution mode of described flyash can be bimodal or multimodal distribution mode.
To the kind of described alkali-activator and consumption, there is no particular limitation, makes flyash form geology polymer material as long as meet.
Relative to the flyash of 100 weight parts, the content of described alkali-activator can be 10-100 weight part, is preferably 30-60 weight part.
Described alkali-activator is the alkali-activator based on alkalimetal silicate and/or alkaline earth metal silicate, is preferably the alkali-activator based on alkalimetal silicate.
Based on modulus (the i.e. SiO of the alkali-activator of alkalimetal silicate
2/ M
2the mol ratio of O) be preferably not less than 2.2, be more preferably not less than 2.4, wherein M represents basic metal.
More preferably, described alkali-activator is water glass.Relative to the total amount of water glass, the solids content of water glass can for being not less than 34 % by weight but lower than 46 % by weight, and preferably 34.5 % by weight to 42 % by weight.
Preferably, said composition is also containing additive.Relative to the flyash of 100 weight parts, the content of described additive can be 0.5-25 weight part, is preferably 1-10 weight part.Described additive can be one or more in water reducer, hardening accelerator, water-resisting agent, catalyzer, whipping agent, suds-stabilizing agent and pumping agent.
Preferably, said composition is also containing ultimate compression strength toughener.Relative to the flyash of 100 weight parts, the content of described ultimate compression strength toughener can be 0.01-5 weight part, is preferably 0.05-2 weight part.Described ultimate compression strength toughener can be toughened fiber and/or slag.
Geopolymer formulation provided by the invention can be obtained by conventional preparation method, such as, mixed by various composition, obtain slurry.In mixing process, preferably stir, the rotating speed of stirring can be 50-150rpm, preferred 60-125rpm.The time of mixing can be 10 seconds to 10 minutes, preferably 10 seconds to 5 minutes.
Present invention also offers a kind of geology polymer material, this material is made up of geopolymer formulation provided by the invention.
The method being prepared geology polymer material by geopolymer formulation provided by the invention can for conventional method, such as, by the geopolymer formulation casting of pulp-like mixed, natural curing, also can cut, finished product as required further.
The geology polymer material obtained by geopolymer formulation of the present invention has higher ultimate compression strength, can meet the application in the fields such as construction work.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Fig. 1 is the grain size distribution of the flyash of the specific embodiment of the present invention Raw 4 and embodiment 2.
Embodiment
Below will be described the present invention by embodiment.
Preparation example
By grinding and screening, the flyash that obtained size distribution is as shown in table 1.
Table 1
Embodiment 1-4
Above-mentioned different material is mixed according to different median size according to the proportioning shown in following table 2, the flyash of obtained two or three size distribution.
Table 2
Fig. 1 shows the size distribution of the flyash of raw material 4 and embodiment 2, and the size distribution of its Raw 4 is single particle size distribution, and the size distribution of the flyash of embodiment 2 is bimodal distribution mode.
Embodiment 5-8
Embodiment 5 to 8 is for the preparation of geology polymer material of the present invention.
In the embodiment of the present invention, NaOH used is chemical pure product, purchased from Chinese Medicine group Beijing Company.Water used is deionized water.
(1) solution preparation
Water glass is diluted with water to set concentration.The aqueous solution setting concentration is configured to according to modulus set in following table 3.
(2) slurry preparation
According to the consumption shown in table 3, the flyash of embodiment 1-4 is poured in NJ-16A cement mixer, then adds water glass, and setting speed is stir under 60rpm.Stir and obtain a homogeneous mixture after 2 minutes, then the grout obtained is poured in testing mould.
(3) sample test
For intensity test, condition of molding is room temperature and relative humidity is (50 ± 10) %.After shaping, sample is transferred in cement standard maintaining box, places 28 days under normal curing condition (20 ± 1 DEG C, relative humidity >=90%).Then the sample demoulding is tested its 1 day according to GB/T17671-1999,14 days and 28 days ultimate compression strength.For the sample of 28 days intensity, after the 24h demoulding, continue maintenance in constant-temp. and-moisture maintenance.The results are shown in following table 3.
Comparative example 1-3
According to the method identical with embodiment 5-8, use the flyash of preparation example obtain sample and measure, result is as shown in table 3.
Table 3
As can be seen from the result shown in table 3, median size close even median size is larger time, 28 days normal temperature maintenance ultimate compression strength of the sample that the flyash containing two or three average particle size distribution provided by the invention is made are apparently higher than only containing the sample that the flyash of single particle size distribution is made.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. a geopolymer formulation, wherein, this geopolymer formulation contains flyash and alkali-activator, described flyash comprises the two or three in component A, B component and component C according to different median size, wherein, the median size of component A is less than 5 microns, and the median size of B component is for being greater than 5 microns and being less than or equal to 40 microns, and the median size of component C is for being greater than 40 microns.
2. composition according to claim 1, wherein, with the total amount of flyash for benchmark, the content of component A, B component and component C is 0-98 % by weight independently of one another, and the content sum of component A, B component and component C is 100 % by weight.
3. composition according to claim 2, wherein, with the total amount of flyash for benchmark, the content of component A is 0-40 % by weight, is preferably 0-30 % by weight; The content of B component is 10-95 % by weight, is preferably 20-90 % by weight; The content of component C is 0-80 % by weight, be preferably 0-30 % by weight, and the content sum of component A, B component and component C is 100 % by weight.
4. the composition according to any one of claim 1-3, wherein, in component A, the flyash that particle diameter is less than 5 microns accounts for more than 70 % by weight of component A.
5. the composition according to any one of claim 1-4, wherein, in B component, particle diameter is less than 40 microns of flyash being greater than 5 microns and accounts for more than 70 % by weight of B component.
6. the composition according to any one of claim 1-5, wherein, in component C, particle diameter is less than 300 microns of flyash being greater than 40 microns and accounts for more than 70 % by weight of component C.
7. according to the composition in claim 1-6 described in any one, wherein, the size distribution mode of described flyash is bimodal or multimodal distribution mode.
8. the composition according to any one of claim 1-7, wherein, relative to the flyash of 100 weight parts, the content of described alkali-activator is 10-100 weight part, is preferably 30-60 weight part.
9. the composition according to any one of claim 1-8, wherein, described alkali-activator is the alkali-activator based on alkalimetal silicate and/or alkaline earth metal silicate, and modulus is not less than 2.2, is preferably not less than 2.4, and wherein M represents basic metal.
10. composition according to claim 9, wherein, described alkali-activator is water glass, and its solids content is not less than 34 % by weight but lower than 46 % by weight, preferably 34.5 % by weight to 42 % by weight.
11. compositions according to any one of claim 1-10, wherein, said composition is also containing additive, and relative to the flyash of 100 weight parts, the content of described additive is 0.5-25 weight part, is preferably 1-10 weight part; Described additive is one or more in water reducer, hardening accelerator, water-resisting agent, catalyzer, whipping agent, suds-stabilizing agent and pumping agent.
12. compositions according to any one of claim 1-11, wherein, said composition is also containing ultimate compression strength toughener, and relative to the flyash of 100 weight parts, the content of described ultimate compression strength toughener is 0.01-5 weight part, is preferably 0.05-2 weight part; Described ultimate compression strength toughener is toughened fiber and/or slag.
13. 1 kinds of geology polymer materials, this material is made up of the composition in claim 1-12 described in any one.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776910A (en) * | 2016-04-08 | 2016-07-20 | 济南大学 | Ferronickel slag geopolymer and preparation method thereof |
| CN105837066A (en) * | 2016-04-08 | 2016-08-10 | 济南大学 | A foamed nickel-iron slag geopolymer and a preparing method thereof |
| CN106565210A (en) * | 2016-11-10 | 2017-04-19 | 神华集团有限责任公司 | Composition for preparing spherical ceramic particles, and spherical ceramic particles as well as preparation method and application thereof |
| CN109206033A (en) * | 2017-06-29 | 2019-01-15 | 润泰精密材料股份有限公司 | Non- calcination cement composition, non-calcination concrete composition, non-calcination concrete and its preparation method |
| CN109476544A (en) * | 2016-07-20 | 2019-03-15 | 西索斯公司 | For production geology polymer or the method for geopolymer composite material |
| CN110078426A (en) * | 2019-05-14 | 2019-08-02 | 安徽扬采材料科技有限公司 | A kind of geo-polymer modified polyphenyl insulation board |
| US11440843B2 (en) | 2016-07-20 | 2022-09-13 | Synthos S.A. | Modified geopolymer and modified geopolymer composite and process for the production thereof |
| US11993691B2 (en) | 2016-07-20 | 2024-05-28 | Synthos S.A. | Use of geopolymeric additive in combination with non-brominated flame retardant in polymer foams |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776910A (en) * | 2016-04-08 | 2016-07-20 | 济南大学 | Ferronickel slag geopolymer and preparation method thereof |
| CN105837066A (en) * | 2016-04-08 | 2016-08-10 | 济南大学 | A foamed nickel-iron slag geopolymer and a preparing method thereof |
| CN105837066B (en) * | 2016-04-08 | 2018-01-02 | 济南大学 | A kind of Foamed Nickel scum geo-polymer and preparation method thereof |
| CN105776910B (en) * | 2016-04-08 | 2018-03-27 | 济南大学 | A kind of ferronickel slag geo-polymer and preparation method thereof |
| CN109476544A (en) * | 2016-07-20 | 2019-03-15 | 西索斯公司 | For production geology polymer or the method for geopolymer composite material |
| US11440843B2 (en) | 2016-07-20 | 2022-09-13 | Synthos S.A. | Modified geopolymer and modified geopolymer composite and process for the production thereof |
| US11993691B2 (en) | 2016-07-20 | 2024-05-28 | Synthos S.A. | Use of geopolymeric additive in combination with non-brominated flame retardant in polymer foams |
| CN106565210A (en) * | 2016-11-10 | 2017-04-19 | 神华集团有限责任公司 | Composition for preparing spherical ceramic particles, and spherical ceramic particles as well as preparation method and application thereof |
| CN109206033A (en) * | 2017-06-29 | 2019-01-15 | 润泰精密材料股份有限公司 | Non- calcination cement composition, non-calcination concrete composition, non-calcination concrete and its preparation method |
| CN109206033B (en) * | 2017-06-29 | 2022-01-21 | 润泰精密材料股份有限公司 | Non-calcined cement composition, non-calcined concrete and method for producing the same |
| CN110078426A (en) * | 2019-05-14 | 2019-08-02 | 安徽扬采材料科技有限公司 | A kind of geo-polymer modified polyphenyl insulation board |
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Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: Beijing low carbon clean energy research institute Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: SHENHUA GROUP Corp.,Ltd. Patentee before: Beijing low carbon clean energy research institute |