CN105060752A - Concrete admixture - Google Patents
Concrete admixture Download PDFInfo
- Publication number
- CN105060752A CN105060752A CN201510482752.0A CN201510482752A CN105060752A CN 105060752 A CN105060752 A CN 105060752A CN 201510482752 A CN201510482752 A CN 201510482752A CN 105060752 A CN105060752 A CN 105060752A
- Authority
- CN
- China
- Prior art keywords
- powder
- concrete admixture
- flyash
- cobble
- weight percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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 present invention discloses a concrete admixture with higher activity and lower production cost. The concrete admixture comprises raw materials of cobble powder, coal ash, limestone powder, wherein the cobble powder, the coal ash and the limestone powder are mixed uniformly.
Description
Technical field
The present invention relates to technical field of concrete, particularly relate to a kind of concrete admixture.
Background technology
Concrete admixture is to improve concrete performance, water saving, regulates strength grade of concrete, mixes the natural or artificial powdered ore material that can improve concrete performance when concrete mixing.Usually adopt flyash as adulterant in existing the middle and low grade concrete.
The silica containing ratio of flyash is lower, and therefore, activity is lower, and the volume of flyash is general all many, and between 10 ~ 40%, and the purchase cost of flyash is higher.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of activity higher, the concrete admixture that cost of manufacture is lower.
The object of the present invention is achieved like this:
A kind of concrete admixture, the starting material of concrete admixture comprise cobble powder, flyash, limestone powder, and described cobble powder, flyash, limestone powder mix.
In order to improve the dioxide-containing silica of concrete admixture, and then improve the activity of concrete admixture, the weight percent of described cobble powder is 35%-60%, and the weight percent of described flyash is 20%-45%, and the weight percent of described limestone powder is 10%-20%.
In order to make concrete admixture reach flyash II grade of technical requirements completely, the weight percent of described cobble powder is 55%, and the weight percent of described flyash is 25%, and the weight percent of described limestone powder is 20%.
In order to ensure the fineness of concrete admixture, described cobble powder, flyash, limestone powder adopt ball mill to grind and form.
Grind efficiency in order to what ensure cobble powder, flyash, limestone powder, improve the fineness of concrete admixture, described ball mill is three storehouse closed-circuit ball mills.
In order to improve adulterant to concrete reinforced effects, the specific surface area of described cobble powder, flyash, limestone powder is all more than or equal to 360cm
2/ g.
In order to ensure the SiO of concrete admixture
2content, the SiO of described cobble powder
2content is more than 65%.
In order to ensure the CaO content of concrete admixture, the CaO content of described limestone powder is more than 50%.
Owing to adopting technique scheme, the activity of solidifying native adulterant of the present invention is higher, better to concrete reinforced effects, and cost is more cheap.
Embodiment
A kind of concrete admixture, the starting material of concrete admixture comprise cobble powder (pebbles crushed powder), flyash, the limestone powder (powder that Wingdale is made, main containing CaO), described cobble powder, flyash, limestone powder mix.In order to ensure the SiO of concrete admixture
2content, the SiO of described cobble powder
2content is more than 65%.In order to ensure the CaO content of concrete admixture, the CaO content of described limestone powder is more than 50%.The weight percent of described cobble powder is 35%-60%, and be preferably 55%, the weight percent of described flyash is 20%-45%, and be preferably 25%, the weight percent of described limestone powder is 10%-20%, is preferably 10%.
Described cobble powder, flyash, limestone powder adopt computer batching ball mill to grind and form, and the specific surface area of described cobble powder, flyash, limestone powder is all more than or equal to 360cm
2/ g.In the present embodiment, described ball mill is three storehouse closed-circuit ball mills.
5 kinds of formulas of concrete admixture of the present invention are as following table:
As can be seen from above table, concrete admixture technical formula is than being cobble powder 35%-60%, flyash 20%-45%, limestone powder 20%, preferred embodiment is numbering 4: fineness 20%, water demand ratio 98%, loss on ignition 7.5%, reach flyash II grade of technical requirements completely, account for clear superiority from economic benefits comparison, cheap 30 yuan/ton of cost ratio flyash.
Concrete admixture production technique provided by the invention is simple, produce concrete admixture and adopt ф 3.0 × 13 meter of three storehouse closed-circuit system, computer is prepared burden, there is accurate measurement, precision is high, and ball mill is the cement mill of my company's efficient energy-saving, has output high, reach 40t/h, fine ground slag specific surface area reaches 360cm
2/ more than g.Concrete admixture uses divergence to reach more than 550mm at business's concrete station, the slump 220 ± 20mm, result of use is good.
Concrete admixture and the flyash composition of numbering 4 scheme contrast as following table:
It can be seen from the table flyash differs 20% with concrete admixture, silicon-dioxide, and concrete admixture provided by the invention has stronger excitation for concrete strength.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (8)
1. a concrete admixture, is characterized in that: concrete admixture comprises cobble powder, flyash, limestone powder, and described cobble powder, flyash, limestone powder mix.
2. concrete admixture according to claim 1, is characterized in that: the weight percent of described cobble powder is 35%-60%, and the weight percent of described flyash is 20%-45%, and the weight percent of described limestone powder is 10%-20%.
3. concrete admixture according to claim 2, is characterized in that: the weight percent of described cobble powder is 55%, and the weight percent of described flyash is 25%, and the weight percent of described limestone powder is 20%.
4. concrete admixture according to claim 1, is characterized in that: described cobble powder, flyash, limestone powder adopt ball mill to grind and form.
5. concrete admixture according to claim 4, is characterized in that: described ball mill is three storehouse closed-circuit ball mills.
6. concrete admixture according to claim 1, is characterized in that: the specific surface area of described cobble powder, flyash, limestone powder is all more than or equal to 360cm
2/ g.
7. concrete admixture according to claim 1, is characterized in that: the SiO of described cobble powder
2content is more than 65%.
8. concrete admixture according to claim 1, is characterized in that: the CaO content of described limestone powder is more than 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482752.0A CN105060752A (en) | 2015-08-07 | 2015-08-07 | Concrete admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482752.0A CN105060752A (en) | 2015-08-07 | 2015-08-07 | Concrete admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105060752A true CN105060752A (en) | 2015-11-18 |
Family
ID=54490336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482752.0A Pending CN105060752A (en) | 2015-08-07 | 2015-08-07 | Concrete admixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105060752A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538136A (en) * | 2009-04-29 | 2009-09-23 | 华南理工大学 | Premixing mortar with high moisture retention and production method thereof |
| CN101805139A (en) * | 2009-02-12 | 2010-08-18 | 北京清迈信息材料有限公司 | High performance concrete produced by high silicon tailings and preparation method thereof |
| CN102001839A (en) * | 2010-03-29 | 2011-04-06 | 中国铁道科学研究院铁道建筑研究所 | Silica micropowder-containing concrete composite admixture and preparation method thereof |
| CN103435287A (en) * | 2013-07-31 | 2013-12-11 | 朔州市巨光建材开发有限公司 | Fly ash composite admixture for concrete and preparation method of admixture |
-
2015
- 2015-08-07 CN CN201510482752.0A patent/CN105060752A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805139A (en) * | 2009-02-12 | 2010-08-18 | 北京清迈信息材料有限公司 | High performance concrete produced by high silicon tailings and preparation method thereof |
| CN101538136A (en) * | 2009-04-29 | 2009-09-23 | 华南理工大学 | Premixing mortar with high moisture retention and production method thereof |
| CN102001839A (en) * | 2010-03-29 | 2011-04-06 | 中国铁道科学研究院铁道建筑研究所 | Silica micropowder-containing concrete composite admixture and preparation method thereof |
| CN103435287A (en) * | 2013-07-31 | 2013-12-11 | 朔州市巨光建材开发有限公司 | Fly ash composite admixture for concrete and preparation method of admixture |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |