CN102815909A - Gangue ready mixed mortar and preparation method thereof - Google Patents
Gangue ready mixed mortar and preparation method thereof Download PDFInfo
- Publication number
- CN102815909A CN102815909A CN2012103417934A CN201210341793A CN102815909A CN 102815909 A CN102815909 A CN 102815909A CN 2012103417934 A CN2012103417934 A CN 2012103417934A CN 201210341793 A CN201210341793 A CN 201210341793A CN 102815909 A CN102815909 A CN 102815909A
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- coal gangue
- gangue
- mortar
- mixed mortar
- premixing mortar
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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
Abstract
The invention discloses gangue ready mixed mortar and a preparation method of the gangue ready mixed mortar. The gangue ready mixed mortar is formed by mixing gangue fine powder, silicate cement clinker, silica fume, a composite fine aggregate, a composite exciter, an inner curing agent and gypsum mixing control agent according to proper mass percentages through a certain process, wherein the content of the gangue fine powder is 5 to 20 percent; and the content of the gangue fine aggregate is 15 to 60 percent. The physical performance indexes such as strength, viscosity, water-retaining property, condensation time and stretching adhesive strength of the gangue ready mixed mortar can meet the standard requirements in a building material industry, and demands for masonry and wall surface plastering can be met. With the adoption of the gangue ready mixed mortar, the problems of long-time accumulation of gangue and environment pollution are solved, and the gangue is turned into wealth; the industrial policies in energy conservation, emission reduction and environment protection in China are met; and the gangue ready mixed mortar is favorable for popularization and application.
Description
Technical field
The invention belongs to building material technical field, be specially a kind of coal gangue premixing mortar and preparation method thereof.
Background technology
Premixing mortar is meant by specialized manufacturer production, is used for the various mortar mixtures of construction project, is a kind of New Building Materials that China's developed recently gets up.At present, the scene is mixed the system mortar and demonstrated its inherent defective day by day, and is unstable like the mortar quality, waste of material big, the mortar kind is single, the civilized construction degree is low, makes construction engineering quality be difficult to be guaranteed, and simultaneously urban environment produced severe contamination.Therefore, six ministries and commissions such as the Ministry of Construction unite and issued " about in the part city time limit forbid the on-the-spot notice that stirs mortar working ", require 127 cities to 2009 to forbid using at the construction field (site) cement to stir mortar year July, and issued corresponding standard.With regard to China mortar enterprise, mainly exist production unit simple and crude, product price is higher, problems such as professional level is low, mortar function singleness, especially reducing product price is imperative with improving functionalization.
Coal gangue be mixed in carbon content in the coal seam lower, than the hard rock of coal; The solid waste general name of in coal separation and coal washing process, discharging is one of maximum industrial solid castoff of China quantity discharged, and annual coal gangue quantity discharged accounts for 10% to 15% of coal production then; Only 2010 annual emissions reach 3.8 hundred million tons; Coal gangue hill reaches more than 1500 at present, only more than 50 hundred million tons, takes up an area of 1.3 * 10
8Cm
2More than.A large amount of coal gangues are stacked not only land occupation for a long time, and cause environmental pollution.Reduce discharging coal gangue, make that it is innoxious, resource utilization is imperative.Though the coal gangue utilization ratio reaches more than 70%, utilize added value very low, as reclaim to build up fields and build the road and underground filling; Colliery wastes brick, low calorie fuelss etc. are in building material industry; Coal gangue is used for brickmaking and accounts for more than 90%, and other are used for cement mixture, concrete admixture, aggregate etc.Compare with other solid waste such as flyash, the activity that influences key that coal gangue effectively utilizes at building material industry and be coal gangue is not high, and the activity that how to improve coal gangue is the bottleneck that the restriction coal gangue utilizes.Existing main mode is high-temperature calcination and chemi-excitation.Utilizing coal gangue to prepare aspect the premixing mortar (or dry-mix); Relevant at home patent has 200910085856.2 and 200810246222.6, and the former does fine aggregate with coal gangue, and the existing problems utility value is low; The latter is used as blended material and fine aggregate to coal gangue; Wherein do blended material and partly need pass through 750-850 ℃ of calcination processing, energy consumption and equipment cost are big, make this technology popularization difficulty big.
Therefore, how reasonably to excite the activity of coal gangue, improve its utility value and economic benefit, make it have market application foreground widely, have bigger practical significance.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art; The present invention proposes a kind of is the preparation method of the coal gangue premixing mortar of raw material with the coal gangue; Physical performance indexs such as the intensity of coal gangue premixing mortar, denseness, water-retentivity, time of coagulation, tensile bond strength all satisfy the building material industry standard requirement, can satisfy and build by laying bricks or stones and the wall plastering needs.This invention has not only helped solving coal gangue and has piled up the problems such as pollution that reach environment for a long time, and coal gangue is turned waste into wealth, and meets the industry policy that country is energy-conservation, reduce discharging, protect environment, helps applying.
The objective of the invention is to realize like this:
A kind of coal gangue premixing mortar; It is characterized in that, combine according to mass percent: curing agent, 0.5-4.5% compound activator, 0.3-1.5% gypsum adjustable solidification agent in the standard quartz sand of 5%-20% coal gangue fine powder, 10-30% Portland clinker, 15-60% coal gangue fine aggregate, 15-60%, 2% silicon ash, 0.1-1% high efficiency water reducing agent, the 0.01-0.1% by following raw materials according;
Described compound activator is made up of terra alba and calcium hydroxide;
Described gypsum adjustable solidification agent is terra alba or calcium sulphate hemihydrate;
How described high efficiency water reducing agent for being FDN or polycarboxylic acid series PC, solid powder;
Curing agent is SEPIGEL 305 or methyl cellulose ether in described;
Described standard quartz sand is 2 district's medium sands;
Described silicon ash median size is at 0.15-0.20 μ m, and specific surface area is 15000 ~ 20000m
2/ kg;
The coal gangue premixing mortar, its concrete preparing method's step is following:
(1) earlier coal gangue is broken into separated into two parts behind the particulate in crusher, part I carries out classification according to 2 district sand requirements, as the coal gangue fine aggregate; Grinding is to requiring fineness in ball mill for part II, and specific surface area is controlled at 350-450m
2/ kg;
(2) Portland clinker and gypsum adjustable solidification agent are by usage ratio grinding to requirement fineness in ball mill, and specific surface area is controlled at 350-450m
2/ kg;
(3) levigated coal gangue fine powder, cement clinker, compound activator, high efficiency water reducing agent, interior curing agent, coal gangue fine aggregate, silica sand are mixed according to the above ratio, process coal gangue cement mortar.
Positive beneficial effect:The coal gangue fine powder is a kind of gelling material in the cement; Have certain hydration activity, this activity need just can show under the exciting agent existence condition, though hydrated cementitious can provide calcium hydroxide to excite; But this excitation is limited; Need mix exciting agent again,, make the aquation of coal gangue not exclusively depend on quantity and the speed that hydrated cementitious produces calcium hydroxide like components such as calcium hydroxide, calcium sulfate.
Interior curing agent mainly is in order to make externally water scarcity or when being not easy to maintenance of mortar; Rely on the moisture that self absorbs to discharge gradually; Keep the inner suitable humidity of mortar, in order to avoid the dry shrinkage cracking is mainly used big and some the slower materials of dehydration of a little water regains; Like Vestolen PP 7052 hydramine, methyl cellulose ether etc., the effect that the present invention adopts is the Vestolen PP 7052 hydramine preferably.
High efficiency water reducing agent for reducing the amount of water of mortar, thereby improves the intensity and the weather resistance of mortar mainly under the prerequisite that guarantees the normal construction performance.At present commonly used how based water reducer and polycarboxylate water-reducer, the present invention adopts effect polycarboxylate water-reducer preferably.
The gypsum adjustable solidification agent is used to regulate the time of coagulation of mortar.In suitable volume scope, can regulate the hydration rate of cement and coal gangue, thereby adjust the time of coagulation of coal gangue premixing mortar, generally with dihydrate gypsum or semi-hydrated gypsum.
Because the hardness of coal gangue, cement clinker, exciting agent is different, it is different to reach regulation fineness required time, requires separately grinding.
The coal gangue premixing mortar of the present invention's preparation has following advantage:
(1) adopt compound activator that coal gangue is carried out activity excitation, make its latent hydraulicity obtain performance to a certain degree, but only by chemically sensitized method, the coal gangue activity is on the low side.Therefore, the present invention requires lower characteristics by mortar for strength of cement, uses the active admixture of coal gangue as mortar, has avoided increasing because of the cost that the active effect of excessively pursuing coal gangue brings; Simultaneously utilize coal gangue to have the characteristics of higher-strength again, reach the abundant recycling of coal gangue.
(2) physical performance indexs such as the denseness of coal gangue premixing mortar, water-retentivity, time of coagulation, tensile bond strength all satisfy JG/T230-2007 requirement.When coal gangue fine powder volume during at 5-10%, the premixing mortar strength grade reaches 20; When coal gangue fine powder volume during at 10-15% the premixing mortar strength grade reach 15; When coal gangue fine powder volume during at 15-20% the premixing mortar strength grade reach 10.
(3) not only the general property of coal gangue premixing mortar meets the demands; And impermeability, cohesiveness, splitting resistance etc. are good; Can be used as uses such as masonry mortar, motar, ground mortar; Have simultaneously that steady quality, construction are simple, the characteristic of environment underload, meet China's strategy of sustainable development.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further:
A kind of coal gangue premixing mortar; It is characterized in that, combine according to mass percent: curing agent, 0.5-4.5% compound activator, 0.3-1.5% gypsum adjustable solidification agent in the standard quartz sand of 5%-20% coal gangue fine powder, 10-30% Portland clinker, 15-60% coal gangue fine aggregate, 15-60%, 2% silicon ash, 0.1-1% high efficiency water reducing agent, the 0.01-0.1% by following raw materials according;
Described compound activator is made up of terra alba and calcium hydroxide;
Described gypsum adjustable solidification agent is terra alba or calcium sulphate hemihydrate;
How described high efficiency water reducing agent for being FDN or polycarboxylic acid series PC, solid powder;
Curing agent is SEPIGEL 305 or methyl cellulose ether in described;
Described standard quartz sand is 2 district's medium sands;
Described silicon ash median size is at 0.15-0.20 μ m, and specific surface area is 15000 ~ 20000m
2/ kg;
The coal gangue premixing mortar, its concrete preparing method's step is following:
(1) earlier coal gangue is broken into separated into two parts behind the particulate in crusher, part I carries out classification according to 2 district sand requirements, as the coal gangue fine aggregate; Grinding is to requiring fineness in ball mill for part II, and specific surface area is controlled at 350-450m
2/ kg;
(2) Portland clinker and gypsum adjustable solidification agent are by usage ratio grinding to requirement fineness in ball mill, and specific surface area is controlled at 350-450m
2/ kg;
(3) levigated coal gangue fine powder, cement clinker, compound activator, high efficiency water reducing agent, interior curing agent, coal gangue fine aggregate, silica sand are mixed according to the above ratio, process coal gangue cement mortar.
Embodiment 1
Through various components are ground into fine powder as stated above, mix in following ratio mass percent then.
Coal gangue fine powder 5.0%
Portland clinker 30.4%
Gypsum adjustable solidification agent 1.0%
Compound activator 0.5%
Silicon ash 2.0%
High efficiency water reducing agent 1.0%
Interior curing agent 0.1 %
Coal gangue fine aggregate 45.0%
Silica sand 15.0%
The Main physical performance index that record are: time of coagulation 4h, 28 days intensity 26.6MPa, 95%, 14 day cohesive strength 1.64MPa of water-retentivity, impervious grade is P6, the mortar expansion rate is 1.5 * 10
-2%.
Embodiment 2
Through various components are ground into fine powder as stated above, mix in following ratio mass percent then.
Coal gangue fine powder 10.0%
Portland clinker 25.9%
Silicon ash 2.0%
Gypsum adjustable solidification agent 1.0%
Compound activator 2.0%
High efficiency water reducing agent 1.0%
Interior curing agent 0.1 %
Coal gangue fine aggregate 45.0%
Silica sand 15.0%
The Main physical performance index that record are: time of coagulation 4h, 28 days intensity 20.1MPa, 92%, 14 day cohesive strength 1.20MPa of water-retentivity, impervious grade is P6, rate of expansion is 1.1 * 10
-2%.
Embodiment 3
Through various components are ground into fine powder as stated above, mix in following ratio mass percent then.
Coal gangue fine powder 15.0%
Portland clinker 19.9%
Silicon ash 2.0%
Gypsum adjustable solidification agent 1.0%
Compound activator 3.0%
High efficiency water reducing agent 1.0%
Interior curing agent 0.1 %
Coal gangue fine aggregate 45.0%
Silica sand 15.0%
The Main physical performance index that record are: time of coagulation 4h, 28 days intensity 17.6MPa, 90%, 14 day cohesive strength 0.82MPa of water-retentivity, impervious grade is P6, rate of expansion is 0.9 * 10
-2%.
The coal gangue premixing mortar of the present invention's preparation has following advantage:
(1) adopt compound activator that coal gangue is carried out activity excitation, make its latent hydraulicity obtain performance to a certain degree, but only by chemically sensitized method, the coal gangue activity is on the low side.Therefore, the present invention requires lower characteristics by mortar for strength of cement, uses the active admixture of coal gangue as mortar, has avoided increasing because of the cost that the active effect of excessively pursuing coal gangue brings; Simultaneously utilize coal gangue to have the characteristics of higher-strength again, reach the abundant recycling of coal gangue.
(2) physical performance indexs such as the denseness of coal gangue premixing mortar, water-retentivity, time of coagulation, tensile bond strength all satisfy JG/T230-2007 requirement.When coal gangue fine powder volume during at 5-10%, the premixing mortar strength grade reaches 20; When coal gangue fine powder volume during at 10-15% the premixing mortar strength grade reach 15; When coal gangue fine powder volume during at 15-20% the premixing mortar strength grade reach 10.
(3) not only the general property of coal gangue premixing mortar meets the demands; And impermeability, cohesiveness, splitting resistance etc. are good; Can be used as uses such as masonry mortar, motar, ground mortar; Have simultaneously that steady quality, construction are simple, the characteristic of environment underload, meet China's strategy of sustainable development.
Above embodiment only is used to explain preferred implementation of the present invention; But the present invention is not limited to above-mentioned embodiment; In the ken that said field those of ordinary skill is possessed; Any modification of being done within spirit of the present invention and the principle, be equal to and substitute and improvement etc., it all should be encompassed within the technical scheme scope that the present invention asks for protection.
Claims (8)
1. coal gangue premixing mortar; It is characterized in that, combine according to mass percent: curing agent, 0.5-4.5% compound activator, 0.3-1.5% gypsum adjustable solidification agent in the standard quartz sand of 5%-20% coal gangue fine powder, 10-30% Portland clinker, 15-60% coal gangue fine aggregate, 15-60%, 2% silicon ash, 0.1-1% high efficiency water reducing agent, the 0.01-0.1% by following raw materials according.
2. the coal gangue premixing mortar that requires according to right 1, it is characterized in that: described compound activator is made up of terra alba and calcium hydroxide.
3. the coal gangue premixing mortar that requires according to right 1, it is characterized in that: described gypsum adjustable solidification agent is terra alba or calcium sulphate hemihydrate.
4. the coal gangue premixing mortar that requires according to right 1 is characterized in that: how described high efficiency water reducing agent for being FDN or polycarboxylic acid series PC, solid powder.
5. the coal gangue premixing mortar that requires according to right 1 is characterized in that: curing agent is SEPIGEL 305 or methyl cellulose ether in described.
6. the coal gangue premixing mortar that requires according to right 1, it is characterized in that: described standard quartz sand is 2 district's medium sands.
7. the coal gangue premixing mortar that requires according to right 1 is characterized in that: described silicon ash median size is at 0.15-0.20 μ m, and specific surface area is 15000 ~ 20000m
2/ kg.
8. coal gangue premixing mortar as claimed in claim 1, its concrete preparing method's step is following:
(1) earlier coal gangue is broken into separated into two parts behind the particulate in crusher, part I carries out classification according to 2 district sand requirements, as the coal gangue fine aggregate; Grinding is to requiring fineness in ball mill for part II, and specific surface area is controlled at 350-450m
2/ kg;
(2) Portland clinker and gypsum adjustable solidification agent are by usage ratio grinding to requirement fineness in ball mill, and specific surface area is controlled at 350-450m
2/ kg;
(3) levigated coal gangue fine powder, cement clinker, compound activator, high efficiency water reducing agent, interior curing agent, coal gangue fine aggregate, silica sand are mixed according to the above ratio, process coal gangue cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341793.4A CN102815909B (en) | 2012-09-17 | 2012-09-17 | Gangue ready mixed mortar and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210341793.4A CN102815909B (en) | 2012-09-17 | 2012-09-17 | Gangue ready mixed mortar and preparation method thereof |
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|---|---|
| CN102815909A true CN102815909A (en) | 2012-12-12 |
| CN102815909B CN102815909B (en) | 2015-03-11 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174834A (en) * | 2015-08-25 | 2015-12-23 | 西安建筑科技大学 | Coal-gangue lightweight aggregate concrete |
| CN105294003A (en) * | 2014-06-27 | 2016-02-03 | 贵州中建建筑科研设计院有限公司 | Method for preparing cement mortar with gangue particles |
| CN110482888A (en) * | 2019-09-18 | 2019-11-22 | 贵州中能高新材料有限公司 | A method of utilizing waste standby gypsum based self-leveling mortar made of stones |
| CN112537917A (en) * | 2020-12-19 | 2021-03-23 | 湖北工业大学 | Application method of support mortar coagulant prepared from coal gangue |
| CN113582625A (en) * | 2021-08-24 | 2021-11-02 | 江苏金立方环保科技有限公司 | Premixed mortar suitable for plastering various walls and preparation method thereof |
| CN114105560A (en) * | 2021-11-24 | 2022-03-01 | 内蒙古工业大学 | Dry-mixed bonding mortar prepared from coal gangue and fly ash and preparation method thereof |
| CN114276102A (en) * | 2021-10-31 | 2022-04-05 | 平安电气股份有限公司 | Coal gangue modified bottom layer plastering gypsum and preparation method thereof |
| CN115286296A (en) * | 2021-12-23 | 2022-11-04 | 昆明理工大学 | Dry-mixed mortar produced by using high-calcium coal gangue and production method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546410A (en) * | 2003-12-01 | 2004-11-17 | 同济大学 | Composite cement with large amount of coal gangue and its preparation method |
| CN101445347A (en) * | 2008-12-30 | 2009-06-03 | 淮南东辰集团有限责任公司 | Dry-mixed mortar with coal gangue, and preparation method thereof |
| CN102503318A (en) * | 2011-10-24 | 2012-06-20 | 沈阳建筑大学 | High bending strength cement-based grouting material |
-
2012
- 2012-09-17 CN CN201210341793.4A patent/CN102815909B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546410A (en) * | 2003-12-01 | 2004-11-17 | 同济大学 | Composite cement with large amount of coal gangue and its preparation method |
| CN101445347A (en) * | 2008-12-30 | 2009-06-03 | 淮南东辰集团有限责任公司 | Dry-mixed mortar with coal gangue, and preparation method thereof |
| CN102503318A (en) * | 2011-10-24 | 2012-06-20 | 沈阳建筑大学 | High bending strength cement-based grouting material |
Non-Patent Citations (1)
| Title |
|---|
| 马先伟 等: "煤矸石活性激发方法探讨", 《矿产综合利用》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105294003A (en) * | 2014-06-27 | 2016-02-03 | 贵州中建建筑科研设计院有限公司 | Method for preparing cement mortar with gangue particles |
| CN105174834A (en) * | 2015-08-25 | 2015-12-23 | 西安建筑科技大学 | Coal-gangue lightweight aggregate concrete |
| CN110482888A (en) * | 2019-09-18 | 2019-11-22 | 贵州中能高新材料有限公司 | A method of utilizing waste standby gypsum based self-leveling mortar made of stones |
| CN112537917A (en) * | 2020-12-19 | 2021-03-23 | 湖北工业大学 | Application method of support mortar coagulant prepared from coal gangue |
| CN113582625A (en) * | 2021-08-24 | 2021-11-02 | 江苏金立方环保科技有限公司 | Premixed mortar suitable for plastering various walls and preparation method thereof |
| CN114276102A (en) * | 2021-10-31 | 2022-04-05 | 平安电气股份有限公司 | Coal gangue modified bottom layer plastering gypsum and preparation method thereof |
| CN114105560A (en) * | 2021-11-24 | 2022-03-01 | 内蒙古工业大学 | Dry-mixed bonding mortar prepared from coal gangue and fly ash and preparation method thereof |
| CN115286296A (en) * | 2021-12-23 | 2022-11-04 | 昆明理工大学 | Dry-mixed mortar produced by using high-calcium coal gangue and production method thereof |
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| CN102815909B (en) | 2015-03-11 |
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Inventor after: Ma Xianwei Inventor after: Niu Jishou Inventor after: Zhu Kai Inventor after: Yao Liyang Inventor after: Gao Wenying Inventor before: Ma Xianwei Inventor before: Niu Jishou Inventor before: Zhang Guoqiang Inventor before: Zhu Kai Inventor before: Yao Liyang |
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Free format text: CORRECT: INVENTOR; FROM: MA XIANWEI NIU JISHOU ZHANG GUOQIANG ZHU KAI YAO LIYANG TO: MA XIANWEI NIU JISHOU ZHU KAI YAO LIYANG GAO WENYING |
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Granted publication date: 20150311 Termination date: 20170917 |