CN1473785A - Flyash excitant - Google Patents
Flyash excitant Download PDFInfo
- Publication number
- CN1473785A CN1473785A CNA031336574A CN03133657A CN1473785A CN 1473785 A CN1473785 A CN 1473785A CN A031336574 A CNA031336574 A CN A031336574A CN 03133657 A CN03133657 A CN 03133657A CN 1473785 A CN1473785 A CN 1473785A
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- CN
- China
- Prior art keywords
- flyash
- calcium
- excitant
- surplus
- solid support
- 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.)
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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 flyash excitant has two different compositions. That for no-steel bar concrete consists of mirabilite 10-30 wt%, calcium chloride 10-30 wt%, sodium chloride 10-20 wt%, efficient water reducing agent 10-25 wt%, calcium lignosulfonate 1.5-7.0 wt% and ardealite 5-15 wt% other than carrier material. That for reinforced concrete consists of mirabilite 10-30 wt%, calcium chloride 10-15 wt%, sodium chloride 10-20 wt%, calcium nitrite 20-30 wt% efficient water reducing agent 6-10 wt%, calcium lignosulfonate 2-5 wt% and ardealite 5-15 wt% other than carrier material. The flyash excitant can excite the latent activity of flyash effectively so as to increase the added amount of flyash in concrete and lower the cost of concrete product.
Description
Technical field
The invention belongs to improving the flyash excitant of the special development of the filling properties of flyash in concrete and mortar.
Background technology
Have at present both at home and abroad multiplely, conclude and get up to have mechanical activation, chemical activation, physically activated and mechanochemistry activation etc. about the measure that improves flyash activity.The trend of domestic comprehensive utilization flyash is to pay attention to the direct application of the flyash of discharge, and make every effort to high volume, like this in the hope of cutting down finished cost, obtain high economic benefit and social benefit, so the development research of flyash excitant is the important topic of total utilization of PCA always.Existing flyash excitant is used alkali (calcium oxide, sodium hydroxide etc.), vitriol (gypsum, saltcake etc.), muriate (sodium-chlor, calcium chloride etc.), yellow soda ash, silicic acid more; And efficient water reducer such as naphthalenesulfonate formaldehyde condensation compound and calcium lignosulfonate ordinary water-reducing agent.Except that adding water reducer (fluidizer), when mixing inorganicss such as above-mentioned alkali, salt, often incorporation is higher, not only increase cost, and at incorporation during more or improper use, also can produce some disadvantage,, corrosion take place and destroy concrete durability etc. because of alkali-aggregate reaction as the whiting frosting occurring.
Summary of the invention
The purpose of this invention is to provide a kind of flyash excitant, so that excite the lateral reactivity of flyash effectively, increase fly-ash-contained, and reduce the cost of this flyash excitant as far as possible, under the prerequisite that guarantees remarkable technique effect, improve economic benefit and society's (environmental protection) benefit of concrete and goods industry thereof.
Technical scheme of the present invention is as follows:
Scheme 1
A kind of flyash excitant, (be used for non-reinforced concrete, volume is the 3%---5% of cement and flyash total amount), it comprises following component and content (weight percent):
Component concentration
Sodium sulfate anhydrous.min(99) (Na
2SO
4) 10--30
Calcium chloride (CaCl
2) 10--30
Sodium-chlor (NaCl) 10--20
Solid support material (flyash or zeolite powder) surplus.
In order to improve concrete flowability, and reduce contraction ratio, on the basis of such scheme, increase:
High efficiency water reducing agent (UNF-5 or FDN etc.) 10--25
Calcium lignin sulphonate (wooden calcium) 1.5--7.0
Solid support material (flyash or zeolite powder) surplus.
In order further to improve the intensity of flyash concrete, on the basis of such scheme, increase:
Phosphogypsum 5---15
Solid support material (flyash or zeolite powder) surplus.
Scheme 2
A kind of flyash excitant (be used for Steel Concrete, volume is with scheme 1), it comprises following component and content (weight percent)
Component concentration
Sodium sulfate anhydrous.min(99) (Na
2SO
4) 10--30
Calcium chloride (CaCl
2) 10--15
Sodium-chlor (NaCl) 10--20
Calcium nitrite 20--30
Solid support material (flyash or zeolite powder) surplus.
The purpose that increases calcium nitrite in this scheme be in and the corrosion of sodium-chlor, improve concrete weather resistance.
In order to improve concrete flowability, and reduce contraction ratio, on the basis of such scheme, increase:
High efficiency water reducing agent (UNF-5 or FDN etc.) 6---10
Calcium lignin sulphonate (wooden calcium) 2---5
Solid support material (flyash or zeolite powder) surplus.
In order further to improve the intensity and the resistant to tarnishing ability of the flyash concrete that mixes this exciting agent, on the basis of such scheme, increase:
Phosphogypsum 5---15
Solid support material (flyash or zeolite powder) surplus.
The exciting agent that scheme 2 is remembered (exciting agent that is used for Steel Concrete) also can be used for non-reinforced concrete, and technique effect is better, and only cost is high.
The preparation technology of this exciting agent is that accurately above-mentioned each component raw material of weighing utilizes the mixing, the pulverizer that have the mixing stirring and pulverize function to make through homogenizing, stirring, grinding (or pulverizing).Its fineness be controlled at can be all by the 0.63mm sieve, and 0.315mm tails over and is not more than 12%.
The performance index of this exciting agent are pressed table 1 control.(videing infra)
Table 1 is mixed the concrete performance index of this exciting agent
| Test subject | Flyash excitant | ||
| 1 type | 2 types | ||
| Flyash replaces cement rate 30% | Flyash replaces cement rate 40% | ||
| Compressive strength rate % is not less than | ?7d | ??75 | ??75 |
| ?28d | ??100 | ??100 | |
| ?56d | ??110 | ??105 | |
| Contraction ratio % is not more than | ?28d | ??110 | ??110 |
Annotate: 1 type is for to mix this exciting agent of 3% in the table in cement and flyash, and 2 types are for to mix this exciting agent of 4% in the table in cement and flyash.
This exciting agent is used for fly-ash mortar and flyash concrete, and the measured result of its mechanical property (compressive strength rate) sees Table 2 and table 3 respectively.
Table 2 is mixed the mortar mechanical property measured result (by standard GB1596-91 test) of this exciting agent
| Numbering | Ultimate compression strength MPa/ compares per-cent | ||
| ?7d | ?28d | ?56d | |
| ?K 0(100% cement) | ?32.6/100 | ?50.4/100 | ?58.3/100 |
| K-F (70% cement+30% flyash) | ?19.2/58.9 | ?39.7/78.8 | ?45.3/77.7 |
| ?K-F-S 1 | ?25.1/77.0 | ?43.2/85.7 | ?50.2/86.1 |
| ?K-F-S 2 | ?26.2/80.4 | ?44.7/89.0 | ?55.5/95.2 |
| ?K-F-S 3 | ?24.0/73.6 | ?41.8/82.9 | ?53.0/90.9 |
Annotate: K-F-S
1, K-F-S
2, K-F-S
3Be respectively and on the basis of K-F, mix 3% embodiment 1, embodiment 2, the exciting agent of embodiment 3.
Table 3 is mixed the mechanical performance of concrete measured result (by 5.6.1 test among the standard GB8076-1997) (videing infra) of this exciting agent
| Numbering | Ultimate compression strength MPa/ relative percentage | ||
| 7d | ?28d | ?56d | |
| ?C 0(100% cement) | 17.7/100 | ?26.4/100 | ?33.4/100 |
| ?C-F 0(70% cement+30% flyash) | 11.0/62.1 | ?17.2/64.9 | ?22.2/66.5 |
| ?C-F-S 1 | 15.1/85.3 | ?27.3/103.2 | ?35.3/105.6 |
| ?C-F-S 2 | 22.6/127.6 | ?32.5/123.1 | ?36.1/108.2 |
| ?C-F-S 3 | 15.2/86.0 | ?32.7/124.0 | ?39.8/119.2 |
Annotate: C-F-S
1, C-F-S
2, C-F-S
3Be respectively at C-F
0The basis on respectively mix 3% embodiment 1, embodiment 2, the exciting agent of embodiment 3.
The present invention has following advantage: this flyash excitant can excite the lateral reactivity of flyash effectively, increase the volume of flyash in concrete and goods thereof, and can improve the intensity of concrete early stage (1d, 3d, 7d), 28 days intensity increases the longterm strength sustainable growth with comparing of fly ash not.Because the increase of doping quantity of fly ash can be saved cement, reduce the cost of concrete and goods thereof.Because this exciting agent uses the sodium-chlor of a certain amount of cheapness and industrial residue phosphogypsum to make raw material, and when using high efficiency water reducing agent and the ordinary water-reducing agent science compound, thereby can reduce the cost of this kind flyash excitant effectively.Through budgetary estimate, 1 ton of this flyash excitant of every application can fully utilize the flyash about 10 tons, saves about 10 tons of cement, economizes on the use of funds 1500 yuan, and as seen its economic benefit and social benefit are very remarkable.
Embodiment (videing infra) table 4 embodiment
Claims (6)
1, a kind of flyash excitant, (be used for non-reinforced concrete, volume is the 3%---5% of cement and flyash total amount), it comprises following component and content (weight percent):
Component concentration
Sodium sulfate anhydrous.min(99) (Na
2SO
4) 10--30
Calcium chloride (CaCl
2) 10--30
Sodium-chlor (NaCl) 10--20
Solid support material (flyash or zeolite powder) surplus.
2,, it is characterized in that it also comprises following component and content (weight percent) according to the said flyash excitant of claim 1:
High efficiency water reducing agent (UNF-5 or FDN etc.) 10--25
Calcium lignin sulphonate (wooden calcium) 1.5--7.0
Solid support material (flyash or zeolite powder) surplus.
3,, it is characterized in that it also comprises following component and content (weight percent) according to claim 1 or 2 said flyash excitants
Phosphogypsum 5---15
Solid support material (flyash or zeolite powder) surplus.
4, a kind of flyash excitant (be used for Steel Concrete, volume is with scheme 1), it comprises following component and content (weight percent)
Component concentration
Sodium sulfate anhydrous.min(99) (Na
2SO
4) 10--30
Calcium chloride (CaCl
2) 10--15
Sodium-chlor (NaCl) 10--20
Calcium nitrite 20--30
Solid support material (flyash or zeolite powder) surplus.
5,, it is characterized in that it also comprises following component and content (weight percent) according to the said flyash excitant of claim 4:
High efficiency water reducing agent (UNF-5 or FDN etc.) 6---10
Calcium lignin sulphonate (wooden calcium) 2---5
Solid support material (flyash or zeolite powder) surplus.
6,, it is characterized in that it also comprises following component and content (weight percent) according to claim 4 or 5 said flyash excitants:
Phosphogypsum 5--15
Solid support material (flyash or zeolite powder) surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031336574A CN1186289C (en) | 2003-08-08 | 2003-08-08 | Flyash excitant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031336574A CN1186289C (en) | 2003-08-08 | 2003-08-08 | Flyash excitant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1473785A true CN1473785A (en) | 2004-02-11 |
| CN1186289C CN1186289C (en) | 2005-01-26 |
Family
ID=34154283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031336574A Expired - Fee Related CN1186289C (en) | 2003-08-08 | 2003-08-08 | Flyash excitant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1186289C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357212C (en) * | 2006-03-02 | 2007-12-26 | 姜齐洋 | Cement composite exciting agent |
| CN100425559C (en) * | 2005-11-25 | 2008-10-15 | 沈阳理工大学 | Multifunctional cement grinding aid |
| CN101549977A (en) * | 2009-05-14 | 2009-10-07 | 吕运征 | Composite gelate material and method of producing the same |
| CN1730423B (en) * | 2005-06-30 | 2010-06-23 | 吕迎智 | Cement rapid hardening excitant |
| CN102173633A (en) * | 2011-03-04 | 2011-09-07 | 攀枝花九鼎建材有限责任公司 | Activator for improving reactivity of fly ash in cement |
| CN101475326B (en) * | 2007-04-18 | 2012-05-30 | 天津城市建设学院 | Technology for preparing low-heat cement by dry desulfurizing fly ash |
| CN104108893A (en) * | 2013-04-17 | 2014-10-22 | 哈尔滨工业大学强石混凝土技术开发有限责任公司 | Fly ash activator |
| 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 |
| CN104591576A (en) * | 2015-01-30 | 2015-05-06 | 宁夏中亿节能新材料有限公司 | Fly ash composite cement reinforced grade-increasing agent and preparation method thereof |
| CN105330189A (en) * | 2015-12-03 | 2016-02-17 | 甘肃土木工程科学研究院 | Coal ash activating agent and low-cost cement prepared through same |
| CN112679131A (en) * | 2021-01-26 | 2021-04-20 | 内蒙古宏尔高新材料科技有限公司 | Powder modification excitant for pulverized coal ash and preparation method thereof |
-
2003
- 2003-08-08 CN CNB031336574A patent/CN1186289C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730423B (en) * | 2005-06-30 | 2010-06-23 | 吕迎智 | Cement rapid hardening excitant |
| CN100425559C (en) * | 2005-11-25 | 2008-10-15 | 沈阳理工大学 | Multifunctional cement grinding aid |
| CN100357212C (en) * | 2006-03-02 | 2007-12-26 | 姜齐洋 | Cement composite exciting agent |
| CN101475326B (en) * | 2007-04-18 | 2012-05-30 | 天津城市建设学院 | Technology for preparing low-heat cement by dry desulfurizing fly ash |
| CN101549977A (en) * | 2009-05-14 | 2009-10-07 | 吕运征 | Composite gelate material and method of producing the same |
| CN102173633A (en) * | 2011-03-04 | 2011-09-07 | 攀枝花九鼎建材有限责任公司 | Activator for improving reactivity of fly ash in cement |
| CN102173633B (en) * | 2011-03-04 | 2012-11-21 | 攀枝花九鼎建材有限责任公司 | Activator for improving reactivity of fly ash in cement |
| CN104108893A (en) * | 2013-04-17 | 2014-10-22 | 哈尔滨工业大学强石混凝土技术开发有限责任公司 | Fly ash activator |
| 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 |
| CN104591576A (en) * | 2015-01-30 | 2015-05-06 | 宁夏中亿节能新材料有限公司 | Fly ash composite cement reinforced grade-increasing agent and preparation method thereof |
| CN105330189A (en) * | 2015-12-03 | 2016-02-17 | 甘肃土木工程科学研究院 | Coal ash activating agent and low-cost cement prepared through same |
| CN112679131A (en) * | 2021-01-26 | 2021-04-20 | 内蒙古宏尔高新材料科技有限公司 | Powder modification excitant for pulverized coal ash and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186289C (en) | 2005-01-26 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HULUDAO CITY LIAOXI CONCRETE ADMIXTURE CO., LTD. Free format text: FORMER OWNER: JU BINGXIU; ZHAN XUEBIN Effective date: 20061110 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061110 Address after: 125018 Liaoning province Huludao city lianshanqu Venus Village town of Buddha Patentee after: Liaoxi Concrete Additive Co., Ltd., Huludao City Address before: 121001, 63-15 South District, Guta District, Liaoning, Jinzhou Co-patentee before: Zhan Xuebin Patentee before: Ju Bingxiu |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |