CN103435287B - The reinforcement of concrete flyash composite blending material and preparation method thereof - Google Patents
The reinforcement of concrete flyash composite blending material and preparation method thereof Download PDFInfo
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- CN103435287B CN103435287B CN201310329709.1A CN201310329709A CN103435287B CN 103435287 B CN103435287 B CN 103435287B CN 201310329709 A CN201310329709 A CN 201310329709A CN 103435287 B CN103435287 B CN 103435287B
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- flyash
- concrete
- slag
- desulfurated plaster
- aggregate chips
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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 present invention relates to a kind of the reinforcement of concrete flyash composite blending material and preparation method thereof, it belongs to a kind of material of construction for building and preparation method thereof.The present invention mainly solves that the slump that existing mineral admixture exists is too large, chemical shrinkage and self-constriction is comparatively large and use cost is high technological difficulties.The technical solution used in the present invention is: the reinforcement of concrete flyash composite blending material, it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described raw material is: slag 20 ~ 30%, aggregate chips 4 ~ 15%, flyash 58 ~ 73% and desulfurated plaster 1 ~ 4%.Preparation method, it comprises the following steps: first to adopt research of super-pine crush equipment to be crushed into superfined flyash in flyash, then slag, aggregate chips and desulfurated plaster are mixed also ball milling and become powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
Description
Technical field
The present invention relates to a kind of the reinforcement of concrete flyash composite blending material and preparation method thereof, it belongs to a kind of material of construction for building and preparation method thereof.
Background technology
Along with the development of modern concrete technology, the diversification of concrete component has become a kind of trend.Except cement, coarse-fine aggregate and water, modern concrete also comprises two kinds of important outer permeations, and a kind of is the chemical admixture that is representative with new and effective water reducer, retardant etc., and a kind of is the mineral admixture that is representative with ground slag powder, flyash etc.
GB/T18736-2002 " mineral admixture for high-strength high-performance concrete " clear stipulaties: to add for improving endurance performance of concrete, levigate various mineral admixtures, also known as mineral additive, its principal character is levigate mineral material, fineness ratio cement granules is little, is mainly used in improving concrete weather resistance and serviceability.
Flyash, blast-furnace slag and silicon ash etc. is mineral admixture conventional at present.But still there are some technical problems when being used alone a certain mineral admixture.When using flyash as concrete admixture, although improve the application property of mix, the slump is too large; Use slag as concrete admixture time, concrete chemical shrinkage and self-constriction larger; When using silicon ash for concrete admixture, because silicon ash has high-specific surface area, thus its water requirement is very large, therefore need be equipped with water reducer, can ensure concrete workability, and use cost is higher.
At present, the main Energy Base of China, while the national rapid economic development of support, creates a large amount of industrial solid castoffs.The problems such as the environmental pollution brought is serious of storing up of the solid waste especially coal-based waste such as flyash, desulfurated plaster constrain economic Sustainable development, and therefore, the recycling of solid waste becomes the problem needing urgent solution.
Summary of the invention
The object of the invention is to solve that the slump that existing mineral admixture exists is too large, chemical shrinkage and self-constriction is comparatively large and use cost is high technological difficulties, a kind of save energy, environmental pollution is little and production cost is low the reinforcement of concrete flyash composite blending material and preparation method thereof are provided.
The technical scheme that the present invention adopts for achieving the above object is: the reinforcement of concrete flyash composite blending material, it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described slag, aggregate chips, flyash and desulfurated plaster is: slag 20 ~ 30%, aggregate chips 4 ~ 15%, flyash 58 ~ 73% and desulfurated plaster 1 ~ 4%.
A kind of method preparing above-mentioned the reinforcement of concrete flyash composite blending material, its comprise the following steps: first by weight percent be 58 ~ 73% flyash adopt research of super-pine crush equipment be crushed into superfined flyash, then be the slag of 20 ~ 30% by weight percent, weight percent be 4 ~ 15% aggregate chips and the weight percent desulfurated plaster that is 1 ~ 4% to mix and ball milling becomes powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
Al in described flyash
2o
3content>=20%, the Al in described slag
2o
3content>=20%, the SO in described desulfurated plaster
3content>=30%, the CaCO in described aggregate chips
3content>=50%.
Described research of super-pine crush equipment be steam kinetic energy mill or ball mill in any one.
The particle diameter of described superfined flyash is D
50≤ 10 μm.
Because the present invention adopts slag, aggregate chips, flyash, desulfurated plaster are raw material and use technique scheme, prepare the reinforcement of concrete flyash composite blending material, therefore, compared with background technology, had the following advantages:
1, the present invention is raw materials used is industrial solid castoff, energy-saving production technology environmental protection, reduces the pollution to environment, solves storing up and the problem such as land occupation of solid waste;
2, the concrete flyash composite blending material that obtains of the present invention, adopts slag, aggregate chips, flyash, desulfurized gypsum and other solid waste to be raw material, low production cost;
3, the concrete flyash composite blending material that obtains of the present invention, have higher density, water ratio is low, water demand ratio is little, and specific surface area is large, the advantages such as activity index is large, alternative cement joins in strong concrete, is conducive to improving concrete workability and weather resistance.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
The reinforcement of concrete flyash composite blending material in the present embodiment, it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described slag, aggregate chips, flyash and desulfurated plaster is: slag 23%, aggregate chips 15%, flyash 58% and desulfurated plaster 4%.
The preparation method of above-mentioned the reinforcement of concrete flyash composite blending material, its comprise the following steps: first by weight percent be 58% flyash adopt ball mill to be crushed into particle diameter be D
50the superfined flyash of=9.24 μm, then be the slag of 23% by weight percent, weight percent be 15% aggregate chips and the weight percent desulfurated plaster that is 4% to mix and ball milling becomes powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
Al in above-mentioned flyash
2o
3content>=20%, the Al in described slag
2o
3content>=20%, the SO in described desulfurated plaster
3content>=30%, the CaCO in described aggregate chips
3content>=50%.
The performance of the reinforcement of concrete flyash composite blending material that the present embodiment obtains is: water ratio is 1.0%, and water demand ratio is that the activity index of 99%, 3 days, 7 days, 28 days is respectively 81%, 87%, 106%, and specific surface area is 675m2/kg.C50 concrete prepared by the cement that the reinforcement of concrete flyash composite blending material that the present embodiment obtains substitutes 35%, and concrete workability can be good, and 7 days and 28 days intensity are respectively 42.6MPa, 60.3MPa, and seepage-resistant grade reaches P12.
Embodiment 2
The reinforcement of concrete flyash composite blending material in the present embodiment, it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described slag, aggregate chips, flyash and desulfurated plaster is: slag 30%, aggregate chips 4%, flyash 65% and desulfurated plaster 1%.
The preparation method of above-mentioned the reinforcement of concrete flyash composite blending material, its comprise the following steps: first by weight percent be 65% flyash adopt ball mill to be crushed into particle diameter be D
50the superfined flyash of=7.84 μm, then be the slag of 30% by weight percent, weight percent be 4% aggregate chips and the weight percent desulfurated plaster that is 1% to mix and ball milling becomes powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
Al in above-mentioned flyash
2o
3content>=20%, the Al in described slag
2o
3content>=20%, the SO in described desulfurated plaster
3content>=30%, the CaCO in described aggregate chips
3content>=50%.
The performance of the reinforcement of concrete flyash composite blending material that the present embodiment obtains is: water ratio is 0.9%, and water demand ratio is that the activity index of 99%, 3 days, 7 days, 28 days is respectively 85%, 87%, 108%, and specific surface area is 677m2/kg.C50 concrete prepared by the cement that the reinforcement of concrete flyash composite blending material that the present embodiment obtains substitutes 35%, and concrete workability can be good, and 7 days and 28 days intensity are respectively 48.3MPa, 62.1MPa, and seepage-resistant grade reaches P12.
Embodiment 3
The reinforcement of concrete flyash composite blending material in the present embodiment, it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described slag, aggregate chips, flyash and desulfurated plaster is: slag 21%, aggregate chips 5%, flyash 73% and desulfurated plaster 1%.
The preparation method of above-mentioned the reinforcement of concrete flyash composite blending material, its comprise the following steps: first by weight percent be 73% flyash to adopt steam kinetic energy mill to be crushed into particle diameter be D
50the superfined flyash of=6.70 μm, then be the slag of 21% by weight percent, weight percent be 5% aggregate chips and the weight percent desulfurated plaster that is 1% to mix and ball milling becomes powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
Al2O3 content >=20% in above-mentioned flyash, Al2O3 content >=20% in described slag, SO3 content >=30% in described desulfurated plaster, CaCO3 content >=50% in described aggregate chips.
The performance of the reinforcement of concrete flyash composite blending material that the present embodiment obtains is: water ratio is 0.8%, and water demand ratio is that the activity index of 98%, 3 days, 7 days, 28 days is respectively 85%, 88%, 109%, and specific surface area is 679m2/kg.C50 concrete prepared by the cement that the reinforcement of concrete flyash composite blending material that the present embodiment obtains substitutes 35%, and concrete workability can be good, and 7 days and 28 days intensity are respectively 49.0MPa, 63.6MPa, and seepage-resistant grade reaches P12.
Embodiment 4
The reinforcement of concrete flyash composite blending material in the present embodiment, it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described slag, aggregate chips, flyash and desulfurated plaster is: slag 25%, aggregate chips 10%, flyash 63% and desulfurated plaster 2%.
The preparation method of above-mentioned the reinforcement of concrete flyash composite blending material, its comprise the following steps: first by weight percent be 63% flyash to adopt steam kinetic energy mill to be crushed into particle diameter be D
50the superfined flyash of=4.21 μm, then be the slag of 25% by weight percent, weight percent be 10% aggregate chips and the weight percent desulfurated plaster that is 2% to mix and ball milling becomes powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
Al2O3 content >=20% in above-mentioned flyash, Al2O3 content >=20% in described slag, SO3 content >=30% in described desulfurated plaster, CaCO3 content >=50% in described aggregate chips.
The performance of the reinforcement of concrete flyash composite blending material that the present embodiment obtains is: water ratio is 0.8%, and water demand ratio is that the activity index of 98%, 3 days, 7 days, 28 days is respectively 86%, 87%, 109%, and specific surface area is 688m2/kg.C50 concrete prepared by the cement that the reinforcement of concrete flyash composite blending material that the present embodiment obtains substitutes 35%, and concrete workability can be good, and 7 days and 28 days intensity are respectively 50.6MPa, 64.7MPa, and seepage-resistant grade reaches P12.
The weight percent of slag of the present invention, aggregate chips, flyash and desulfurated plaster can also be: slag 20 ~ 30%, aggregate chips 4 ~ 15%, and in flyash 58 ~ 73% and desulfurated plaster 1 ~ 4%, arbitrary combination is selected, not being restricted to the described embodiments of its protection domain.
Claims (6)
1. a reinforcement of concrete flyash composite blending material, it is characterized in that: it is that raw material is prepared from by slag, aggregate chips, flyash and desulfurated plaster, the weight percent of described slag, aggregate chips, flyash and desulfurated plaster is: slag 20 ~ 30%, aggregate chips 4 ~ 15%, flyash 58 ~ 73% and desulfurated plaster 1 ~ 4%.
2. the reinforcement of concrete flyash composite blending material according to claim 1, is characterized in that: the Al in described flyash
2o
3content>=20%, the Al in described slag
2o
3content>=20%, the SO in described desulfurated plaster
3content>=30%, the CaCO in described aggregate chips
3content>=50%.
3. prepare the method for the reinforcement of concrete flyash composite blending material according to claim 1 for one kind, it is characterized in that: it comprise the following steps: first by weight percent be 58 ~ 73% flyash adopt research of super-pine crush equipment be crushed into superfined flyash, then be the slag of 20 ~ 30% by weight percent, weight percent be 4 ~ 15% aggregate chips and the weight percent desulfurated plaster that is 1 ~ 4% to mix and ball milling becomes powder, finally superfined flyash mixed with the powder after ball milling and carry out homogenizing process, making concrete flyash composite blending material.
4. method according to claim 3, is characterized in that: the Al in described flyash
2o
3content>=20%, the Al in described slag
2o
3content>=20%, the SO in described desulfurated plaster
3content>=30%, the CaCO in described aggregate chips
3content>=50%.
5. method according to claim 3, is characterized in that: described research of super-pine crush equipment be steam kinetic energy mill or ball mill in any one.
6. method according to claim 3, is characterized in that: the particle diameter of described superfined flyash is D
50≤ 10 μm.
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| CN201310329709.1A CN103435287B (en) | 2013-07-31 | 2013-07-31 | The reinforcement of concrete flyash composite blending material and preparation method thereof |
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| CN201310329709.1A CN103435287B (en) | 2013-07-31 | 2013-07-31 | The reinforcement of concrete flyash composite blending material and preparation method thereof |
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| CN103435287B true CN103435287B (en) | 2016-03-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060752A (en) * | 2015-08-07 | 2015-11-18 | 重庆金铂实业（集团）有限公司 | Concrete admixture |
| CN106477928A (en) * | 2015-08-28 | 2017-03-08 | 陈瑞文 | Slag coal ash is reused in the manufacture method of concrete |
| CN105238472B (en) * | 2015-09-12 | 2017-11-21 | 西南科技大学 | A kind of method that Filter Tuber For Clean Coal is produced using industrial exhaust heat |
| CN105777041A (en) * | 2016-04-15 | 2016-07-20 | 河北绿藤再生资源利用有限公司 | Building material synthesis powder and preparation method thereof |
| CN106587685A (en) * | 2016-12-15 | 2017-04-26 | 上海宝田新型建材有限公司 | Compound coal ash admixture for concrete |
| CN106800381A (en) * | 2017-01-11 | 2017-06-06 | 沧州临港金隅水泥有限公司 | A kind of concrete combined addition material |
| CN108341618A (en) * | 2018-02-05 | 2018-07-31 | 无锡金木土科技有限公司 | A kind of non-steamed reactive powder concrete admixture and production method |
| CN109721262A (en) * | 2019-03-11 | 2019-05-07 | 无锡市金希达新型建材有限公司 | A kind of superfined flyash and preparation method thereof |
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Patent Citations (4)
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| 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 |
| CN102070317A (en) * | 2010-11-26 | 2011-05-25 | 北京新奥混凝土集团有限公司 | Mineral admixture concrete |
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Effective date of registration: 20170607 Address after: 036800 Shanxi city in Shuozhou Province, Pinglu District in Antaibao Mine Industrial Square Co-patentee after: Shanxi Pinshuo Waste Coal Power Generation Co., Ltd. Patentee after: Shuozhou Juguang Building Material Development Co., Ltd. Address before: 036800 Shanxi city in Shuozhou Province, Pinglu District Antaibao Industrial Square Patentee before: Shuozhou Juguang Building Material Development Co., Ltd. |