CN106082753B - Superfine powder concrete admixture - Google Patents
Superfine powder concrete admixture Download PDFInfo
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- CN106082753B CN106082753B CN201610408898.5A CN201610408898A CN106082753B CN 106082753 B CN106082753 B CN 106082753B CN 201610408898 A CN201610408898 A CN 201610408898A CN 106082753 B CN106082753 B CN 106082753B
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- flyash
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- activator
- alkali
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of superfine powder concrete admixture is provided; in the material based on granulated blast-furnace slag and power plant's original state flyash; adjustment material and alkali-activator is added; it is superfined flyash through ultra-fine grinding mill combined grinding, wherein the parts by weight 10 of granulated blast-furnace slag; the parts by weight of flyash are 8; the parts by weight for adjusting material are 8, and the parts by weight of alkali-activator are 2, the ㎡/㎏ of the specific surface area of the superfined flyash >=600.The present invention utilizes alkali-activator and superfine powder deep process technology; granulated blast-furnace slag and flyash is set to obtain certain fineness and ph values in total mill; with generate higher sodium hydroxide solution in the common hydration process of cement; to enable in slag and flyash silane agent re-dissolve and secondary crystallization; hydrated calcium aluminate sulfate and carbonate crystal are ultimately formed, concrete early stage and later strength can be increased considerably.
Description
Technical field
The invention belongs to high-performance composite materials manufacture technology fields for building, and in particular to a kind of superfine powder concrete blending
Material.
Background technology
China's steel and thermoelectricity production capacity rank first in the world, cement and concrete yield ranking the first in the world, steel and fire
A large amount of slag and flyash are generated in electricity production, when these waste residues are used in the production of cement and concrete, is generally existed
Instead of cement rate it is only 20% or so in concrete production, utilization rate is relatively low, how to prepare the flyash of high effector function, improves
Volume of the flyash in cement is R＆D direction of the in-depth using flyash.Domestic present situation is a large amount of flyash at present
It is discharged, is occupied cultivated land without any processing, polluted source pollutes environment, therefore thorough pollution administration, and flyash is made to become useless
For treasured, be nature to it is proposed that severe project, currently, due to technical limitation, the extensive recycling of flyash
Problem never obtains important breakthrough, it is therefore necessary to propose to improve.
Invention content
Present invention solves the technical problem that：A kind of superfine powder concrete admixture is provided, alkali-activator and ultra-fine is utilized
Powder deep process technology makes granulated blast-furnace slag and flyash obtain certain fineness and ph values in total mill, common with cement
Higher sodium hydroxide solution is generated in hydration process, to enable silane agent in slag and flyash to re-dissolve and two
Secondary crystallization, ultimately forms hydrated calcium aluminate sulfate and carbonate crystal, can increase considerably concrete early stage and later strength.
The technical solution adopted by the present invention：Superfine powder concrete admixture, in granulated blast-furnace slag and power plant's original state powder
Adjustment material and alkali-activator is added in material based on coal ash, is superfined flyash through ultra-fine grinding mill combined grinding, wherein
The parts by weight of the parts by weight 10 of granulated blast-furnace slag, flyash are 8, and the parts by weight for adjusting material are 8, the weight of alkali-activator
Part it is 2, the ㎡/㎏ of the specific surface area of the superfined flyash >=600.
It is further, described to adjust two or more the mixing that material is calcium sulfate, calcium oxide, calcium carbonate, aluminite powder,
Wherein, the parts by weight of aluminite powder are 4, and other materials are substituted for each other in range.
Further, the exciting agent is between sulfonate high-efficient alkali aqua, triisopropanolamine and sodium carbonate and three
Ratio is 0.8:1：0.1.
The present invention compared with prior art the advantages of：
1, this programme is compared with traditional admixture, have it is at low cost, volume is big, and effect is good, easily transport and preserve use
The advantages that facilitating；
2, material is adjusted in this programme be all made of inorganic material, it is of low cost, it is easy to purchase, and can mutually replace；
3, agent material is excited to be all made of organic material in this programme, dosage is few, and effect is good, and weight is stablized；
4, the present invention makes the double increase of admixture dosage in concrete production, and cement consumption, which synchronizes, to be declined, and life is reduced
Cost and aquation heat number are produced, Cost of Concrete is made to significantly reduce.
Specific implementation mode
A kind of embodiment of the present invention is described below.
Superfine powder concrete admixture, it is characterised in that the material based on granulated blast-furnace slag and power plant's original state flyash
Adjustment material and alkali-activator is added in material, is superfined flyash through ultra-fine grinding mill combined grinding, wherein granulated blast-furnace slag
Parts by weight 10, the parts by weight of flyash are 8, and the parts by weight for adjusting material are 8, and the parts by weight of alkali-activator are 2, described super
The ㎡/㎏ of the specific surface area of fine powdered coal >=600.
Above-mentioned adjusting material is two or more mixing of calcium sulfate, calcium oxide, calcium carbonate, aluminite powder, wherein aluminite
The parts by weight of powder are 4, and other materials are substituted for each other in range；Above-mentioned exciting agent is sulfonate high-efficient alkali aqua, three isopropanols
Ratio between amine and sodium carbonate and three is 0.8:1：0.1.
The present invention utilizes alkali-activator and superfine powder deep process technology, and slag and flyash is made to be obtained in total mill centainly
Fineness and ph values, with generate higher sodium hydroxide solution in the common hydration process of cement, to make slag and flyash
Middle silane agent is able to re-dissolve and secondary crystallization, ultimately forms hydrated calcium aluminate sulfate and carbonate crystal, can significantly increase
Adding concrete early stage and later strength, is based on this technical advantage, KM superfine powders compare with traditional slag with flyash,
It replaces cement rate that can double to replace in concrete production, macroscopically says, increase the dynamics of digestion industrial residue, reduce cement
Dosage demand, has saved resources of production, reduces the exhaust gas discharge in production process, can generate good social benefit, specifically
To concrete production enterprise, production cost is not only reduced, improves fresh mixing concrete property, on the basis of proof strength, from
The aquation heat problem for fundamentally solving mass concrete keeps concrete almost nil because of the cracking probability of heat of hydration factor.
Above-described embodiment, only presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this
The equivalence changes that content is done described in invention claim should all be included within scope of the invention as claimed.
Claims (1)
1. superfine powder concrete admixture, it is characterised in that the material based on granulated blast-furnace slag and power plant's original state flyash,
Adjustment material and alkali-activator is added, is superfined flyash through ultra-fine grinding mill combined grinding, wherein the weight of granulated blast-furnace slag
Part 10 is measured, the parts by weight of flyash are 8, and the parts by weight for adjusting material are 8, and the parts by weight of alkali-activator are 2, the superfine powder
The ㎡/㎏ of the specific surface area of coal ash >=600；It is described adjust material be calcium sulfate, two kinds or several of calcium oxide, calcium carbonate, aluminite powder
The mixing of kind, wherein the parts by weight of aluminite powder are 4, and other materials are substituted for each other in range；The exciting agent is that sulfonate is high
Ratio between the agent of effect buck, triisopropanolamine and sodium carbonate and three is 0.8:1：0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408898.5A CN106082753B (en) | 2016-06-12 | 2016-06-12 | Superfine powder concrete admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610408898.5A CN106082753B (en) | 2016-06-12 | 2016-06-12 | Superfine powder concrete admixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106082753A CN106082753A (en) | 2016-11-09 |
| CN106082753B true CN106082753B (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610408898.5A Active CN106082753B (en) | 2016-06-12 | 2016-06-12 | Superfine powder concrete admixture |
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| CN (1) | CN106082753B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115140966A (en) * | 2022-03-31 | 2022-10-04 | 湖北工业大学 | Concrete composition free of steam curing and concrete member |
| CN115490449A (en) * | 2022-10-07 | 2022-12-20 | 江苏金木土科技有限公司 | Preparation method of superfine mineral admixture |
| CN115466070B (en) * | 2022-11-02 | 2023-02-10 | 唐山学院 | Ultra-low carbon silicon-rich mineral admixture for high-performance concrete and preparation method thereof |
| CN116040974A (en) * | 2023-03-20 | 2023-05-02 | 解婧秋 | Method for preparing superfine powder cement admixture |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070155C (en) * | 1997-01-29 | 2001-08-29 | 马文忠 | Powdered coal ash cement admixture |
| CN1207235C (en) * | 2002-10-14 | 2005-06-22 | 上海市建筑科学研究院 | Admixture specially for high-performance marine concrete |
| CN101475330B (en) * | 2009-01-22 | 2013-03-06 | 中国建筑材料科学研究总院 | Composite high-early strength blending material for unballasted track plate and use thereof |
| CN101851080B (en) * | 2010-03-19 | 2013-08-28 | 华东交通大学 | Acid rain corrosion resisting concrete additive and preparation method thereof |
| CN102311239B (en) * | 2011-06-15 | 2013-02-06 | 浙江天达环保股份有限公司 | Compound activation method for improving activity of coal ash |
| CN105130232A (en) * | 2015-08-28 | 2015-12-09 | 张冷晶 | Activator of blast furnace pelletized waste residues and application of activator |
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2016
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