CN102633458B - Cement mixed material containing coal ash and method for preparing cement mixed material - Google Patents
Cement mixed material containing coal ash and method for preparing cement mixed material Download PDFInfo
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- CN102633458B CN102633458B CN2012100635477A CN201210063547A CN102633458B CN 102633458 B CN102633458 B CN 102633458B CN 2012100635477 A CN2012100635477 A CN 2012100635477A CN 201210063547 A CN201210063547 A CN 201210063547A CN 102633458 B CN102633458 B CN 102633458B
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- cement
- flyash
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a cement mixed material containing coal ash and a method for preparing the cement mixed material. The cement mixed material is formed by means of hybrid reaction of raw materials including, by weight, from 70 to 90 parts of the coal ash, from 5 to 20 parts of plaster stone, from 3 to 5 parts of zeolite, from 0.2 to 3 parts of potassium sulfate, from 2 to 4 parts of calcium carbonate, from 0.05 to 0.07 part of triethanolamine, from 1 to 2 parts of calcium chloride, from 1 to 3 parts of potassium nitride, from 0.5 to 3 parts of polymerized aluminum ferrum chloride and from 0.5 to 3.0 parts of anhydrous sodium metasilicate. The method includes weighing the raw materials according to a formula; realizing ball-milling of the raw materials to form pulp; and then drying the pulp. The cement mixed material containing the coal ash has the advantages of high activity, dosage and early strength, wide material sources and fine peaceability and frozen penetration resistance.
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of cement additive that contains flyash and preparation method thereof.
Background technology
Flyash is as the assorted slag of large Industry Waste, and its processing and comprehensive utilization extremely countries in the world are paid close attention to.In China, method commonly used is that original state flyash or levigate flyash are done the blended material of cement and concrete adulterant, brick, building block.Flyash is as blended material and the concrete adulterant of cement, and China standardizes, and formulates corresponding technical specifications.But use at present the dry row's top grade ash, the one-level that are preferably sorting grey, a large amount of wet ash discharges and the utilization ratio of inferior grade ash are still lower.Exciting with the method for Study of Activation of flyash is more, is mainly that mechanical grinding method, lime alkali excite, steam-cured method.At present, apply more complex excitation, be that lime, gypsum, sodium sulfate mix dry grinding with flyash, though early strength increases, activity is not high, volume is low, not higher than 30%, effect is undesirable, poor stability, add lime alkali high temperature and excite and evaporate because cost is high, the investment large, complex process, could not be used widely.
Summary of the invention
The invention discloses a kind of cement additive that contains flyash and preparation method thereof.The of the present invention cement additive that contains flyash has active high, and volume is large, and material source is wide, early strong high, the good characteristics of good, freeze proof the oozing property of workability.
The technical solution used in the present invention is as follows for achieving the above object:
A kind of cement additive that contains flyash, formed by the following raw materials according hybrid reaction, and the weight part of its each raw material is:
Flyash 70-90
Plaster stone 5-20
Zeolite 3-5
Vitriolate of tartar 0.2-3
Calcium carbonate 2-4
Trolamine 0.05-0.07
Calcium chloride 1-2
Potassium nitrite 1-3
Aluminium iron polychloride 0.5-3
Anhydrous sodium metasilicate 0.5-3.0.
The preparation method of the described cement additive that contains flyash, is characterized in that, comprises the following steps:
(1) press formula rate, take respectively each starting material;
(2) starting material that weigh up are added in ball mill, and add appropriate water ball milling together, cross 400 eye mesh screens to 95% slip;
(3) slurry of milled is dried and got final product, require moisture to be less than 0.5%.
The purposes of the described cement additive that contains flyash, its spy is characterised in that: described cement additive can be used as the mixing material of high-performance cement and the super fine powder additives of high performance concrete.
Beneficial effect of the present invention:
The of the present invention cement additive that contains flyash has active high, and doping quantity of fly ash is large, and material source is wide, and early epistasis can be high, the characteristics that freeze proof oozing property is good;
During production, do not produce secondary pollution, finished product can improve the stability of cement cementitious performance and Behavior of Hardened Cement Paste effectively, can also accelerate the early hydration speed of water, and guarantees the later strength development;
Can be used as the blended material of high-performance cement and the super fine powder additives of high performance concrete.
In formula, flyash used can be wet ash discharge and inferior grade ash, has improved the utilization ratio of wet ash discharge and inferior grade ash, and environmental contamination reduction, reduced the production material cost, played the effect of turning waste into wealth, and reduced the manufacture of cement cost.
Cement mixture of the present invention has high reactivity, contains a large amount of ultrafine powders, the characteristic such as multi-functional, can be used for Portland fly ash cement, composite Portland cement, ordinary Portland cement, high performance silicon acid salt cement blended material and levigate after for concrete batching, high performance concrete, masonry mortar.
Embodiment
Embodiment 1:
A kind of cement additive that contains flyash, formed by the following raw materials according hybrid reaction, and the weight part of its each raw material is:
Flyash 85
Plaster stone 6.24
Zeolite 3
Vitriolate of tartar 0.3
Calcium carbonate 2
Trolamine 0.06
Calcium chloride 1.0
Potassium nitrite 1.0
Aluminium iron polychloride 0.6
Anhydrous sodium metasilicate 0.8.
2, the preparation method comprises the following steps:
(1) press formula rate, take respectively each starting material;
(2) starting material that weigh up are added in ball mill, and add appropriate water ball milling together, cross 400 eye mesh screens to 95% slip;
(3) slurry of milled is put into to drying room and dried 4.5 hours, when measuring its moisture content and being less than 0.5%, get final product, obtain cement additive of the present invention.
testing data
?cement additive of the present invention is mixed with the 52.2R silicate cement, press GB/T1767T1-1999 " Test method for strength of hydraulic cement mortar detection ", its intensity index reaches 42.5 grades, and other index all reaches GB GB12958-1999 " composite Portland cement ".There is early strong, freeze proof, impervious, low hydration heat, good workability.For concrete admixture, can equivalent replace cement, the 40-50% that weight percent is the concrete total amount.The present invention contains a small amount of aluminium iron polychloride and has water retaining function, and aluminium iron polychloride is dispersed in cement, makes exterior wall polymerize aluminum chloride concrete surface can not produce tiny crackle, improves the quality of exterior wall.
Claims (2)
1. a cement additive that contains flyash, it is characterized in that: by the following raw materials according hybrid reaction, formed, the weight part of its each raw material is:
Flyash 70-90
Plaster stone 5-20
Zeolite 3-5
Vitriolate of tartar 0.2-3
Calcium carbonate 2-4
Trolamine 0.05-0.07
Calcium chloride 1-2
Potassium nitrite 1-3
Aluminium iron polychloride 0.5-3
Anhydrous sodium metasilicate 0.5-3.0;
Its preparation method comprises the following steps:
(1) press formula rate, take respectively each starting material;
(2) starting material that weigh up are added in ball mill, and add appropriate water ball milling together, cross 400 eye mesh screens to 95% slip;
(3) slurry of milled is dried and got final product, require moisture to be less than 0.5%.
2. the purposes of the cement additive that contains flyash according to claim 1, it is characterized in that: described cement additive can be used as the mixing material of high-performance cement and the super fine powder additives of high performance concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100635477A CN102633458B (en) | 2012-03-13 | 2012-03-13 | Cement mixed material containing coal ash and method for preparing cement mixed material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100635477A CN102633458B (en) | 2012-03-13 | 2012-03-13 | Cement mixed material containing coal ash and method for preparing cement mixed material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102633458A CN102633458A (en) | 2012-08-15 |
| CN102633458B true CN102633458B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100635477A Expired - Fee Related CN102633458B (en) | 2012-03-13 | 2012-03-13 | Cement mixed material containing coal ash and method for preparing cement mixed material |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478261A (en) * | 2014-12-12 | 2015-04-01 | 宜兴天力化工纳米科技有限公司 | Calcium carbonate and calcium chloride complexing agent and preparation method thereof |
| CN108395124A (en) * | 2018-05-28 | 2018-08-14 | 贵州隆盛源建材有限公司 | A method of configuring cement and its configuration using flyash |
| CN108609932A (en) * | 2018-06-05 | 2018-10-02 | 遵义联合建材有限公司 | A method of configuring cement using flyash |
| CN110746173B (en) * | 2019-11-25 | 2022-03-25 | 和县明生环保材料有限责任公司 | Preparation method of baking-free brick with good freezing resistance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401606A (en) * | 2002-09-11 | 2003-03-12 | 李国栋 | Method for making high performance cement mixed material from flyash |
| CN101337791A (en) * | 2008-08-13 | 2009-01-07 | 大庆石油管理局 | Grinding assistant modifier for complex cement |
| CN101508557A (en) * | 2009-04-09 | 2009-08-19 | 中国铁道科学研究院铁道建筑研究所 | Blending material for high-early-strength concrete |
-
2012
- 2012-03-13 CN CN2012100635477A patent/CN102633458B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401606A (en) * | 2002-09-11 | 2003-03-12 | 李国栋 | Method for making high performance cement mixed material from flyash |
| CN101337791A (en) * | 2008-08-13 | 2009-01-07 | 大庆石油管理局 | Grinding assistant modifier for complex cement |
| CN101508557A (en) * | 2009-04-09 | 2009-08-19 | 中国铁道科学研究院铁道建筑研究所 | Blending material for high-early-strength concrete |
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| CN102633458A (en) | 2012-08-15 |
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Granted publication date: 20131211 Termination date: 20140313 |