CN103833242A - Retarding composite limestone powder admixture - Google Patents
Retarding composite limestone powder admixture Download PDFInfo
- Publication number
- CN103833242A CN103833242A CN201410024046.7A CN201410024046A CN103833242A CN 103833242 A CN103833242 A CN 103833242A CN 201410024046 A CN201410024046 A CN 201410024046A CN 103833242 A CN103833242 A CN 103833242A
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- China
- Prior art keywords
- concrete
- adulterant
- admixture
- limestone powder
- slag
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to a retarding composite limestone powder admixture which comprises the following components by weight: 75-90% of limestone powder; 15-20% of steel slag; 3-8% of phosphorus slag; 0.3-2% of grinding aid. The components are well mixed according to the ratios, and then grinded into fine powder with a fineness specific surface area of not less than 350 m2/kg to obtain the admixture. The admixture has retarding effect, reduces gradual loss in slump of concrete, facilitates smooth construction, and meets requirements of working performance, mechanical properties, and durability of concrete during construction; the admixture adopts limestone powder instead of cement or fly ash, thereby preventing resource waste; concrete prepared by the admixture of the invention is suitable for various building constructions.
Description
Technical field
The present invention relates to material of construction, particularly a kind of retardation setting type compound lime stone flour adulterant.
Background technology
At present concrete production adulterant used is take flyash and breeze as main, and along with the growth of concrete amount, the phenomenon that flyash is in short supply has appearred in many areas, finds a kind of material that can replace cement or flyash imperative.
In recent years, along with the increase year by year of concrete amount, also there is scarcity in the natural sand and stone resources in many places, occurred thus utilizing Wingdale to make the stone quarry of Machine-made Sand and rubble, produced many limestone powders in the process of production mechanism sand and rubble.Limestone powder is abandoned, not only wasted resource, take and stack place, and can have a negative impact to environment.In addition, too short for the concrete coagulating time that at present a lot of stirring stations are produced, particularly in summer, be unfavorable for that construction carries out smoothly, concrete slump through time loss more serious.Therefore, how to solve concrete coagulating time too short, find the material that can replace cement or flyash in adulterant, effectively utilizing resource is the problem that those skilled in the art pay close attention to.
Summary of the invention
The object of this invention is to provide a kind of retardation setting type compound lime stone flour adulterant, described adulterant has delayed coagulation, in addition this adulterant replaces cement or flyash with limestone powder, effectively utilize and produce the limestone powder producing in sandstone process, avoid the wasting of resources, can not only extend concrete coagulating time with the concrete of its preparation, reduce concrete slump through time lose, being conducive to construction carries out smoothly, can also meet concrete serviceability in construction, mechanical property, weather resistance, the concrete of adulterant preparation of the present invention is suitable for various building operation, solve concrete coagulating time too short, search out the adulterant that can replace cement or flyash, effectively utilize resource.
For achieving the above object, technical scheme of the present invention is, compound lime stone flour adulterant, is characterized in that, the weight percent of the each component of this adulterant is, limestone powder: 75-90%; Slag: 15-20%; Phosphorus slag: 3-8%; Grinding aid: 0.3-2%, gets each component by said ratio, after mixing, grinds to form fine powder, fineness ratio surface-area>=350m
2/ kg, obtains described adulterant.
The weight percent of the each component of described adulterant is, limestone powder: 75-80%; Slag: 15-20%; Phosphorus slag: 3-4%; Grinding aid: 1-2%.
CaCO3 content >=85% in described Wingdale.
Described grinding aid is trolamine.
The effect of phosphorus slag of the present invention is to provide concrete retarding effect, with reduce concrete slump through time lose; Slag mainly utilizes its grindability poor, and with phosphorus slag and Wingdale combined grinding, its product particle grating is good, utilizes the microdilatancy performance of slag self, makes concrete more closely knit, and then increases concrete mechanical property.
In technique scheme, adopt the proportioning of Wingdale of the present invention, slag and phosphorus slag, the product obtaining belongs to powder adulterant, meets the condition of filling effect, nucleus effect, active effect, water suction effect and shape effect.Due to three's grindability difference separately, make the particle level collocation of adulterant of the present invention good, its comprehensive fineness requirement is slightly larger than cement, and Wingdale, slag and phosphorus slag can be filled to the particle gap of cement, discharge the water between cement granules, thereby mobility increases, the particle shape of adding Wingdale, slag and phosphorus slag is better, plays the effect of " ball ", has also played and has reduced friction, increase the effect of mobility, more effective performance filling effect.This filling effect, makes pore obtain refinement, and porosity reduces, and improves pore structure.After this product and aggregate gelling material stir, can be uniformly distributed in concrete, and limestone powder belongs to inert material, is evenly distributed in concrete system, the hydrated product of activity latex material can take for nucleus forms crystal, acceleration C
3the aquation of A, thus hydrated product is increased, and avoided the concentrated growth of crystal, effectively bring into play nucleus effect.The effect of nucleus effect can improve the early stage hydration reaction speed of concrete, and then improves concrete mechanical property.Active effect refers to the CaCO in this product
3with cement in C
3when A reaction Formed aluminate, also improve the condition of surface of this product particle, be conducive to the raising of cohesive strength between this product particle and hydrated product.The water suction effect that in this product, the porosity characteristic of limestone powder itself has makes the actual water cement ratio of chips concrete be less than the normal concrete of same proportioning, concrete water-retentivity is strengthened, bleeding rate reduces, and has reduced free water and has assembled on interface, thereby be beneficial to the improvement of slurry-bone interface; Aggregate chips surface irregularity, with sharp corners, not only makes the snap-in force of gathering materials with slurry be enhanced, and is conducive to the improvement of slurry-bone interface, shape effect that Here it is.In addition, slag also has certain microdilatancy effect, can effectively reduce concrete porosity, makes concrete more closely knit; And phosphorus slag has certain delayed coagulation, can suitably save slow setting component in admixture (a kind of chemical composition that extends concrete coagulating time in the admixture that stirring station uses), thereby turn waste into wealth.
Adulterant of the present invention, with limestone powder replacement cement or flyash, can effectively utilize the limestone powder producing in the sandstone production process of stone quarry, and the impact of limestone powder on concrete performance in Machine-made Sand, reduce the waste of the limestone powder producing in sandstone production process, turn waste into wealth, be beneficial to environmental protection, can solve again current Concrete Industry flyash problem in short supply.Described adulterant also has delayed coagulation, can extend concrete coagulating time, reduce concrete slump through time lose, be conducive to concrete construction and carry out smoothly, be of great immediate significance for the Sustainable development of concrete industry.
Adopt concrete work performance, mechanical property and the weather resistance of adulterant preparation of the present invention all can be suitable for various building operation.
Limestone powder of the present invention adopts CaCO
3the commercially available prod of content>=85%; Slag adopts the commercially available prod that meets GB/T20491-2006 regulation; Phosphorus slag adopts the commercially available prod that meets GB/T6645-2008 regulation, and trolamine adopts the commercially available prod that meets HG/T3268-2002 regulation.
Embodiment
Embodiment 1
To get each component by following weight percent proportioning,
Wingdale: 80%, slag 15%, phosphorus slag: 4%, trolamine: 1%
After above-mentioned each component mixes, grind to form fine powder, its specific surface area >=350 ㎡/kg, obtains described adulterant.
Embodiment 2
To get each component by following weight percent proportioning,
Wingdale: 75%, slag 20%, phosphorus slag: 3%, trolamine: 2%
After mixing, above-mentioned each component grinds to form fine powder, its specific surface area>=350m
2/ kg, obtains described adulterant.
The adulterant of getting embodiment 1-2 carries out following experiment:
1. serviceability and mechanical property experiment
2. endurance quality experiment (water resistant permeability test, anti-carbonization test, freeze-thaw-test)
The experiment of table 2 endurance quality
Table 3 label is the proportioning of C30 benchmark, C30 contrast experiment, C60 benchmark, C60 experiment
Unit: Kg
| Label | Numbering | Cement | Flyash | Adulterant | Fine aggregate | Coarse aggregate | Water | Admixture |
| C30 benchmark | S5 | 280 | 80 | 0 | 667 | 1177 | 180 | 7.2 |
| C30 experiment | S6 | 280 | 0 | 80 | 667 | 1177 | 180 | 7.2 |
Above-mentioned test shows: the concrete of the concrete of adulterant preparation of the present invention and flyash preparation is all suitable in serviceability, mechanical property, and weather resistance aspect carbonizing degree is close, impervious and frost resistance is all better than the concrete of flyash preparation, can extend concrete time of coagulation (changing along with the difference of adulterant volume) simultaneously thereupon, concrete is played to delayed coagulation.Adopt the equal concrete that can replace current flyash preparation of concrete work performance, mechanical property and weather resistance of adulterant preparation of the present invention to be suitable for various building operation.
Claims (4)
1. a retardation setting type compound lime stone flour adulterant, is characterized in that, the weight percent of the each component of this adulterant is, limestone powder: 75-90%; Slag: 15-20%; Phosphorus slag: 3-8%; Grinding aid: 0.3-2%, gets each component by said ratio, after mixing, grinds to form fine powder, fineness ratio surface-area>=350m
2/ kg, obtains described adulterant.
2. retardation setting type compound lime stone flour adulterant according to claim 1, is characterized in that, the weight percent of the each component of described adulterant is, limestone powder: 75-80%; Slag: 15-20%; Phosphorus slag: 3-4%; Grinding aid: 1-2%.
3. retardation setting type compound lime stone flour adulterant according to claim 1, is characterized in that: CaCO in described Wingdale
3content>=85%.
4. retardation setting type compound lime stone flour adulterant according to claim 1, is characterized in that: described grinding aid is trolamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024046.7A CN103833242A (en) | 2014-01-17 | 2014-01-17 | Retarding composite limestone powder admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024046.7A CN103833242A (en) | 2014-01-17 | 2014-01-17 | Retarding composite limestone powder admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103833242A true CN103833242A (en) | 2014-06-04 |
Family
ID=50797187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410024046.7A Pending CN103833242A (en) | 2014-01-17 | 2014-01-17 | Retarding composite limestone powder admixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103833242A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698991A (en) * | 2016-11-30 | 2017-05-24 | 汤利发 | Concrete admixture and preparation method thereof |
| CN107188441A (en) * | 2017-06-23 | 2017-09-22 | 安徽科博建材科技有限公司 | A kind of composite gypsum |
| CN107382277A (en) * | 2017-08-16 | 2017-11-24 | 江西省建筑材料工业科学研究设计院 | A kind of superfine composite modified agstone of concrete microdilatancy |
| CN109250941A (en) * | 2018-09-07 | 2019-01-22 | 青岛颢天绿色建筑科技有限公司 | A kind of regenerated aggregate concrete specific complex additive |
| CN110981235A (en) * | 2019-12-25 | 2020-04-10 | 中国葛洲坝集团水泥有限公司 | Hydraulic concrete composite cementing material and preparation method thereof |
| CN111233364A (en) * | 2020-03-06 | 2020-06-05 | 广州市圣丰混凝土有限公司 | Composite mineral admixture, preparation method thereof and artificial sand concrete material containing composite mineral admixture |
| CN114276081A (en) * | 2021-12-23 | 2022-04-05 | 福建省深宝建材有限公司 | Steel slag-containing concrete and preparation method thereof |
| CN115557765A (en) * | 2022-09-19 | 2023-01-03 | 江苏中建商品混凝土有限公司 | Limestone powder composite admixture and preparation method and application thereof |
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| CN100999394A (en) * | 2006-11-21 | 2007-07-18 | 云南华能澜沧江水电有限公司 | Concrete admixture for hydroelectric engineering and its application |
| CN101016198A (en) * | 2007-01-31 | 2007-08-15 | 北京恒坤混凝土有限公司 | Ultra-fine carbonate rock powder concrete composite blending material and preparing method thereof |
| CN102584063A (en) * | 2012-02-27 | 2012-07-18 | 中国铁道科学研究院铁道建筑研究所 | Functional admixture used for early tensioning prestressed structural concrete and purposes of functional admixture |
-
2014
- 2014-01-17 CN CN201410024046.7A patent/CN103833242A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999394A (en) * | 2006-11-21 | 2007-07-18 | 云南华能澜沧江水电有限公司 | Concrete admixture for hydroelectric engineering and its application |
| CN101016198A (en) * | 2007-01-31 | 2007-08-15 | 北京恒坤混凝土有限公司 | Ultra-fine carbonate rock powder concrete composite blending material and preparing method thereof |
| CN102584063A (en) * | 2012-02-27 | 2012-07-18 | 中国铁道科学研究院铁道建筑研究所 | Functional admixture used for early tensioning prestressed structural concrete and purposes of functional admixture |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698991A (en) * | 2016-11-30 | 2017-05-24 | 汤利发 | Concrete admixture and preparation method thereof |
| CN107188441A (en) * | 2017-06-23 | 2017-09-22 | 安徽科博建材科技有限公司 | A kind of composite gypsum |
| CN107382277A (en) * | 2017-08-16 | 2017-11-24 | 江西省建筑材料工业科学研究设计院 | A kind of superfine composite modified agstone of concrete microdilatancy |
| CN109250941A (en) * | 2018-09-07 | 2019-01-22 | 青岛颢天绿色建筑科技有限公司 | A kind of regenerated aggregate concrete specific complex additive |
| CN110981235A (en) * | 2019-12-25 | 2020-04-10 | 中国葛洲坝集团水泥有限公司 | Hydraulic concrete composite cementing material and preparation method thereof |
| CN111233364A (en) * | 2020-03-06 | 2020-06-05 | 广州市圣丰混凝土有限公司 | Composite mineral admixture, preparation method thereof and artificial sand concrete material containing composite mineral admixture |
| CN111233364B (en) * | 2020-03-06 | 2021-12-14 | 广州市圣丰混凝土有限公司 | Composite mineral admixture, preparation method thereof and artificial sand concrete material containing composite mineral admixture |
| CN114276081A (en) * | 2021-12-23 | 2022-04-05 | 福建省深宝建材有限公司 | Steel slag-containing concrete and preparation method thereof |
| CN115557765A (en) * | 2022-09-19 | 2023-01-03 | 江苏中建商品混凝土有限公司 | Limestone powder composite admixture and preparation method and application thereof |
| CN115557765B (en) * | 2022-09-19 | 2023-09-12 | 江苏中建商品混凝土有限公司 | Limestone powder composite admixture and preparation method and application thereof |
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Application publication date: 20140604 |