CN107986643A - A kind of admixture prepared with gypsum activation slag and miberal powder and the high performance concrete prepared using admixture - Google Patents
A kind of admixture prepared with gypsum activation slag and miberal powder and the high performance concrete prepared using admixture Download PDFInfo
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- CN107986643A CN107986643A CN201711085055.7A CN201711085055A CN107986643A CN 107986643 A CN107986643 A CN 107986643A CN 201711085055 A CN201711085055 A CN 201711085055A CN 107986643 A CN107986643 A CN 107986643A
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- admixture
- slag
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- miberal powder
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
- C04B28/082—Steelmaking slags; Converter slags
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of admixture prepared with gypsum activation slag and miberal powder and the high performance concrete prepared using admixture.The admixture is by slag, miberal powder and gypsum with weight ratio（8~10）：（20~22）：（1~3）Mixing composition.The high performance concrete includes following component：300~500 parts of cementitious material；1000~1200 parts of building stones；600~700 parts of sand；100~150 parts of water；3~10 parts of water-reducing agent；Admixture is the 25%~35% of total cementitious material.Activity of the invention by using gypsum activation slag, and the mutual excitation between slag and miberal powder, improve slag and the mixed activity of miberal powder, by using the admixture of the high activity concrete is prepared instead of part of cement, while can ensureing working performance of concrete, it is obviously improved the early strength and later strength of concrete, and the activity index of concrete.
Description
Technical field
The invention belongs to building material technical field, is prepared more particularly, to one kind with gypsum activation slag and miberal powder
Admixture and using admixture prepare high performance concrete.
Background technology
In recent years, the concrete that there is nearly 30 billion cubic meter in China every year is used for infrastructure construction and key state project is built
If important function is played for growth of the national economic and social progress.But at the same time, the high speed hair of cement concrete industry
Exhibition consumes substantial amounts of energy resource, and gives off substantial amounts of greenhouse gases, and serious pollution is caused to environment.China is annual
Cement needed for the concrete of production needs the nearly CO 1.8 hundred million tons, directly produced of combustion standard coal2Nearly 900,000,000 tons, account for the whole world
CO2The 10% of discharge capacity.
Meanwhile China is important steel producing country, China's output of steel keeps the first in the world in continuous 14 years, and far away
Lead over other countries.With the fast development of steel and iron industry, the discharge capacity of its solid waste also rapid growth.2010,
National industrial solid wastes yield is 240943.5 ten thousand tons, and steel discharge capacity is 498.2 ten thousand tons.These solid waste are as obtained
Less than effectively utilize and accumulate for a long time will land occupation, silt river, welding up and pollute.Slag, slag with
Flyash is China's steel and iron industry key industry discarded object, and wherein slag has been obtained in cement and concrete industry at present with flyash
The utilization of mass efficient is arrived, the utilization rate of slag reaches more than 90%, two level above flyash answering in cement concrete
With also very universal.In contrast, slag is because its activity is low, stability problem causes its utilization rate relatively low always.
At present, the activity excitation method both at home and abroad on the mineral admixture such as flyash and slag, slag mainly has physics
Fine grinding, singly mix activator and add Calcium treatment etc..But the activity excitation effect and utilization rate of slag still need further to carry
Rise.Therefore suitable slag and miberal powder activity excitant is found so that the activity of slag and miberal powder admixture obtains further
Lifting, improves the blending ratio of slag while concrete strength is improved, for reducing cement producting material usage amount, cement
Energy consumption and manufacture of cement pollutant discharge amount, increase slag and miberal powder added value, meet that green low-carbon expanding economy has
There is great application value.
The content of the invention
It is an object of the invention to provide a kind of admixture standby with gypsum activation miberal powder and prepared from steel slag.By using gypsum
To the synergistic effect and mutual excitation of the excitation of slag, and slag and miberal powder so that slag, miberal powder and gypsum system
The activity of standby admixture is preferably lifted, and the concrete prepared by the admixture replacing partial cement has preferable early
Phase intensity and later strength.
Another object of the present invention is to provide application of the admixture in concrete is prepared.
Another object of the present invention is a kind of high performance concrete.The high performance concrete with the addition of of the present invention
Admixture, concrete is prepared to replacing partial cement；The coagulation singly mixed slag and brought not only is overcome using the admixture
The reduction of native intensity, also enhances the working performance, early strength and later strength of concrete.
The above-mentioned purpose of the present invention is achieved by the following technical programs：
A kind of admixture prepared with gypsum activation slag and miberal powder, the admixture is by slag, miberal powder and gypsum with weight
Amount is than (8~10)：(20~22)：(1~3) mixing composition.
The principle of slag and the mutual stimulating activity of miberal powder：Ground steel slag is compound with miberal powder, steel-making slag powder used in one side
It is more than cement with the specific surface area of miberal powder, more preferably grain composition can be provided so that concrete reaches more preferably closely knit
State；Another aspect miberal powder can reduce the C/S ratios of slag blending cementitious material so that the eakleite generation in hydrated product
Amount increase, the intensity for showing as Behavior of Hardened Cement Paste improves, in addition, SiO in miberal powder2It can be generated with MgO, FeO etc. and possess higher intensity
Hydrated product.At mutually coordinated aspect, miberal powder with slag is compound is used as admixture, one side miberal powder can absorb the trip in slag
Overcome the bad problem of slag stability that may be present from calcium oxide, free calcium oxide and its aquation in another aspect slag
Product calcium hydroxide equally also can be as the exciting agent of miberal powder secondary reaction of hydration, the two is compound to have higher practical value.
Activity excitation principle of the gypsum to slag and miberal powder：Although slag and ore deposit contain more CaO, its trip formed
From Ca+Seldom, and gypsum is capable of providing more Free Ca+, Free Ca+After aquation again with the SiO in slag2、Fe2O3、Al2O3
Corresponding hydrated product, i.e. hydrated calcium silicate, hydrated calcium ferrite, drated calcium aluminate etc. are generated Deng reaction；In addition, gypsum is carried
The SO of confession4- with slag and miberal powder in C3A、C4AF can react generation entringite.Because with the addition of the gypsum of proper ratio, make
The increase of hydrated calcium silicate in admixture, hydrated calcium ferrite, drated calcium aluminate etc. and entringite content must be mixed, so that
The activity raising of admixture is obtained, and then is carried using the getting up early intensity and later strength of the concrete prepared using the admixture
It is high.
Preferably, the admixture by slag, miberal powder and gypsum with weight ratio 9：21：2 mixing compositions.
Preferably, the slag is splendid steel converter slag, and specific surface area is 500~700m2/kg；Slag calcium oxide contains
Amount is less than 50%.The slag is the converter slag that Shao Gang steel enterprises Co., Ltd provides, main component in its chemical composition
For CaO, SiO2、Fe2O3, and CaO, SiO2、MgO、Fe2O3Content is similar to the chemical composition of cement, possesses potential gelling
Activity.
Preferably, the S95 level graining blast-furnace cinder micro-powders that the miberal powder provides for Shao Gang steel enterprises Co., Ltd, density
For 2.83g/cm3, specific surface area 413m2/kg.Main component is CaO, SiO in its chemical composition2、Al2O3Although CaO contains
Amount is higher, but free CaO content and few.And wherein CaO, SiO2、Al2O3、Fe2O3With content of MgO and the chemical group of cement
It is similar into component, possess potential gelation activity.
The present invention also protects application of the admixture in high performance concrete is prepared at the same time.
The present invention goes back high performance concrete prepared by admixture described in Sustainable use at the same time, and the high performance concrete includes
Following component：300~500 parts of cementitious material；1000~1200 parts of building stones；600~700 parts of sand；100~150 parts of water；Water-reducing agent
3~10 parts；The admixture is the 25%~35% of total cementitious material.Total cementitious material is by cementitious material and admixture group
Into.
Preferably, the admixture accounts for the 30% of total cementitious material.
Preferably, the water-cement ratio of the high performance concrete is 0.25~0.28, is water consumption and total gel rubber material dosage
Ratio.
Preferably, the water-cement ratio of the high performance concrete is 0.26, is the ratio of water consumption and total gel rubber material dosage.
Preferably, the high performance concrete includes following component：343 parts of cementitious material；1090 parts of building stones；668 parts of sand；
125 parts of water；9.8 parts of water-reducing agent；Admixture is the 30% of total cementitious material.
The advantages of the present invention：
Activity of the invention by using gypsum activation slag, and the mutual excitation between slag and miberal powder, carry
High slag and the mixed activity of miberal powder, concrete is prepared by using the admixture of the high activity instead of part of cement, can
While to ensure working performance of concrete, hence it is evident that improve the early strength and later strength and the activity of concrete of concrete
Index.Raw material of the present invention is cheap, easily obtains, and has not only alleviated pressure of the high-strength concrete to cement consumption, but also improve slag
Or effect of the miberal powder as admixture, meet the needs of sustainable development.
Embodiment
The present invention is described in further detail with reference to embodiments, but the implementation of the present invention is not limited to this.
Following embodiments are the preferable embodiment of the present invention, but embodiments of the present invention and are not restricted to the described embodiments, its
His any Spirit Essence without departing from the present invention with made under principle change, modification, replacement, combine, simplification, should be
The substitute mode of effect, is included within protection scope of the present invention.
The preparation of 1 admixture of embodiment
The preparation process of admixture：After splendid steel converter slag mechanical grinding, it is 500~700m to obtain specific surface area2/kg
Steel-making slag powder；The S95 level graining blast-furnace cinder micro-powders that Shao Gang steel enterprises Co., Ltd provides, density 2.83g/cm3, compare table
Area is 413m2/kg；The gypsum bought on the market；By three using mass ratio as 9:21:2 mixing, up to admixture, are denoted as GF.
Wherein the chemical composition of slag and miberal powder see the table below 1 and table 2 respectively.
1 slag chemical composition (%) of table
2 miberal powder chemical composition (%) of table
The preparation of 2 concrete of embodiment
GF prepared by embodiment 1 is used to prepare high performance concrete, it is the Guangzhou Zhujiang River to prepare cement used in concrete
The P.II42.5R cement of Cement Co., Ltd's production；Rubble is the rubble provided using Guangzhou An De building elements Co., Ltd,
The place of production is Zengcheng Yonghe County, and rock kind is granite；The polycarboxylic acids that water-reducing agent Guangzhou An De building elements Co., Ltd provides is high
Performance water-reducing agent HPC-R, water-reducing agent are light brown liquid.
Concrete prepares raw materials used and dosage and is shown in Table 3.10 groups of concrete are in preparation process, in addition to cementitious material, its
His raw material dosage and preparation method are consistent.Admixture replaces cement by the 30% of total cementitious material quality in cementitious material,
Singly mix slag with water purification cement concrete, equal volume respectively, singly mix miberal powder and slag and miberal powder with 15：15 or 21：9 mixing
Admixture prepare concrete contrast.Gypsum activation agent is wherein directed to, using blank control and quick lime positive control.Prepare
Concrete working performance and each age compression strength be shown in Table 4.
3 concrete mix of table
4 working performance of concrete of table and compression strength
To the interpretation of result in table 4, from the point of view of the 2nd~4 group of data, compared with slag or miberal powder list are mixed, even if not adding
Add exciting agent, working performance of concrete, compression strength and the activity index that slag is prepared with miberal powder binary after compound slightly increase
Add.It follows that after slag and miberal powder binary are compound, there is preferable collaboration and mutual excitation between the two.
From the point of view of the 4th group and the 8th~10 group of data, in the case where slag is identical with miberal powder blending ratio, stone with the addition of
Concrete prepared by cream is substantially improved in terms of working performance, compression strength and activity index；Wherein work as slag：Ore deposit
Powder：The weight ratio of gypsum is 9:21:When 2, the working performance of concrete, compression strength and activity index are optimal, i.e., the 9th in table 4
Group data, have in terms of early strength and later strength and are obviously improved.From the point of view of the 7th group of data and the 8th~10 group of data,
When the dosage of gypsum is on the low side, i.e., when the dosage of gypsum is not in the scope of the present invention, it is imitated for the activity excitation of slag
Fruit is poor, the early strength and later strength improvement unobvious of the concrete of preparation.It follows that gypsum for slag and
The activity of miberal powder has excitation, and when the dosage of three is only in proportion of the present invention, the activity of admixture
Preferably, the early strength and later strength of concrete can be significantly improved.
From the point of view of the 1st group and the 5th group of data, compared with concrete prepared by striaght cement, when quick lime is as exciting agent,
Concrete crushing strength and activity index all make moderate progress, but improvement unobvious.Come from the 5th group and the 8th~10 group of data
See, when using gypsum as exciting agent, the compression strength and activity index of concrete are used as obviously higher than quick lime to be excited
Concrete prepared by agent.It can be seen from the above that gypsum to the excitation of slag and miberal powder composite blend activity substantially by force with raw stone
Ash.
To sum up, when using gypsum as the exciting agent of slag and miberal powder, the activity of slag and miberal powder has obtained greatly
Excitation, concrete is prepared using this admixture, in the case where ensureing the precondition of working performance of concrete, can significantly improve concrete
Compression strength and activity index.
Claims (10)
- A kind of 1. admixture prepared with gypsum activation slag and miberal powder, it is characterised in that the admixture by slag, miberal powder and Gypsum is with mass ratio（8~10）：（20~22）：（1~3）Mixing composition.
- 2. admixture according to claim 1, it is characterised in that the admixture is by slag, miberal powder and gypsum with quality Than 9：21：2 mixing compositions.
- 3. admixture according to claim 1, it is characterised in that the slag is splendid steel converter slag, and specific surface area is 500~700m2/kg；The content of slag calcium oxide is less than 50%.
- 4. admixture according to claim 1, it is characterised in that the slag is S95 grades of graining blast-furnace cinder micro-powders, close Spend for 2.83g/cm3, specific surface area 413m2/kg。
- A kind of 5. application of any admixture of Claims 1 to 4 in high performance concrete is prepared.
- 6. a kind of high performance concrete, it is characterised in that the high performance concrete includes following component：Cementitious material 300~ 500 parts；1000~1200 parts of building stones；600~700 parts of sand；100~150 parts of water；3~10 parts of water-reducing agent；Claims 1 to 4 is appointed One admixture is the 25%~35% of total cementitious material.
- 7. high performance concrete according to claim 6, it is characterised in that admixture accounts for the 30% of total cementitious material.
- 8. high performance concrete according to claim 6, it is characterised in that the water-cement ratio of the high performance concrete is 0.25~0.28.
- 9. high performance concrete according to claim 8, it is characterised in that the water-cement ratio of the high performance concrete is 0.26。
- 10. high performance concrete according to claim 6, it is characterised in that the high performance concrete includes such as the following group Point：343 parts of cementitious material；1090 parts of building stones；668 parts of sand；125 parts of water；9.8 parts of water-reducing agent；Admixture is total cementitious material 30%。
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608068A (en) * | 2018-12-19 | 2019-04-12 | 北京科技大学 | A kind of cementitious material, the preparation method of precast concrete and precast concrete |
| CN110615658A (en) * | 2019-10-25 | 2019-12-27 | 东营新基业建筑材料有限公司 | Composite ash for paving roadbed |
| CN110803934A (en) * | 2019-11-28 | 2020-02-18 | 武汉钢铁有限公司 | Light artificial pebble and preparation method thereof |
| CN111499228A (en) * | 2020-03-10 | 2020-08-07 | 涉县清漳水泥制造有限公司 | Cementing material for mortar and application thereof |
| CN111925148A (en) * | 2020-07-31 | 2020-11-13 | 日照钢铁控股集团有限公司 | Composite admixture for cement and concrete production and preparation method thereof |
| CN112010617A (en) * | 2020-08-31 | 2020-12-01 | 常州坚鹏建材有限公司 | Durable stable steel slag-mineral powder concrete and preparation method thereof |
| CN112537914A (en) * | 2020-11-03 | 2021-03-23 | 河北博天建材科技有限公司 | Building gel material, preparation method and application thereof, concrete and preparation method thereof |
| CN112919876A (en) * | 2021-03-23 | 2021-06-08 | 上海市建筑科学研究院有限公司 | Low-cost high-activity admixture for thermal curing concrete product and application |
| CN113754323A (en) * | 2021-05-13 | 2021-12-07 | 北方民族大学 | Steel slag substituted cement and method for improving early activity of steel slag substituted cement |
| CN113845317A (en) * | 2021-09-24 | 2021-12-28 | 广西源盛矿渣综合利用有限公司 | Clinker-free solid waste system cement and manufacturing method thereof |
| CN113912308A (en) * | 2021-09-24 | 2022-01-11 | 上海中冶环境工程科技有限公司 | Gelling admixture capable of replacing part of cement, cement mortar and preparation method and application thereof |
| CN115650649A (en) * | 2022-08-31 | 2023-01-31 | 上海市建筑科学研究院有限公司 | C80 solid waste concrete and preparation method thereof |
| CN116715472A (en) * | 2023-05-31 | 2023-09-08 | 铜陵铜冠建安新型环保建材科技有限公司 | Steel slag-based cementing material and preparation method thereof |
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| CN109608068A (en) * | 2018-12-19 | 2019-04-12 | 北京科技大学 | A kind of cementitious material, the preparation method of precast concrete and precast concrete |
| CN110615658A (en) * | 2019-10-25 | 2019-12-27 | 东营新基业建筑材料有限公司 | Composite ash for paving roadbed |
| CN110803934A (en) * | 2019-11-28 | 2020-02-18 | 武汉钢铁有限公司 | Light artificial pebble and preparation method thereof |
| CN111499228B (en) * | 2020-03-10 | 2021-11-02 | 涉县清漳水泥制造有限公司 | Cementing material for mortar and application thereof |
| CN111499228A (en) * | 2020-03-10 | 2020-08-07 | 涉县清漳水泥制造有限公司 | Cementing material for mortar and application thereof |
| CN111925148A (en) * | 2020-07-31 | 2020-11-13 | 日照钢铁控股集团有限公司 | Composite admixture for cement and concrete production and preparation method thereof |
| CN112010617A (en) * | 2020-08-31 | 2020-12-01 | 常州坚鹏建材有限公司 | Durable stable steel slag-mineral powder concrete and preparation method thereof |
| CN112537914A (en) * | 2020-11-03 | 2021-03-23 | 河北博天建材科技有限公司 | Building gel material, preparation method and application thereof, concrete and preparation method thereof |
| CN112919876A (en) * | 2021-03-23 | 2021-06-08 | 上海市建筑科学研究院有限公司 | Low-cost high-activity admixture for thermal curing concrete product and application |
| CN113754323A (en) * | 2021-05-13 | 2021-12-07 | 北方民族大学 | Steel slag substituted cement and method for improving early activity of steel slag substituted cement |
| CN113845317A (en) * | 2021-09-24 | 2021-12-28 | 广西源盛矿渣综合利用有限公司 | Clinker-free solid waste system cement and manufacturing method thereof |
| CN113912308A (en) * | 2021-09-24 | 2022-01-11 | 上海中冶环境工程科技有限公司 | Gelling admixture capable of replacing part of cement, cement mortar and preparation method and application thereof |
| CN113912308B (en) * | 2021-09-24 | 2023-01-31 | 上海中冶环境工程科技有限公司 | Gelling admixture capable of replacing part of cement, cement mortar and preparation method and application thereof |
| CN115650649A (en) * | 2022-08-31 | 2023-01-31 | 上海市建筑科学研究院有限公司 | C80 solid waste concrete and preparation method thereof |
| CN116715472A (en) * | 2023-05-31 | 2023-09-08 | 铜陵铜冠建安新型环保建材科技有限公司 | Steel slag-based cementing material and preparation method thereof |
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Application publication date: 20180504 |