CN103553512A - Method for preparing concrete by using primarily ground steel slag active micro powder - Google Patents
Method for preparing concrete by using primarily ground steel slag active micro powder Download PDFInfo
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- CN103553512A CN103553512A CN201310309510.2A CN201310309510A CN103553512A CN 103553512 A CN103553512 A CN 103553512A CN 201310309510 A CN201310309510 A CN 201310309510A CN 103553512 A CN103553512 A CN 103553512A
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- concrete
- slag
- micro powder
- grinding
- steel slag
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- 239000002893 slag Substances 0.000 title claims abstract description 61
- 239000004567 concrete Substances 0.000 title claims abstract description 54
- 239000000843 powder Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 title abstract description 11
- 239000010959 steel Substances 0.000 title abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 6
- 239000003595 mist Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for preparing concrete by using steel slag active micro powder which is primarily ground, which is characterized by comprising the following steps: the steel slag raw material after iron removal is primarily ground to a specific surface area of 200-300 m2And (5) replacing cement in the cement concrete with the steel slag active micro powder obtained by primary grinding as an auxiliary cementing material, wherein the replacement mass of the steel slag active micro powder obtained by primary grinding is 5-20% of the mass of the cement in the cement concrete. The invention greatly reduces the energy consumption and the grinding body loss in the steel slag treatment process and greatly reduces the production cost of the steel slag micro powder; the strength and the volume stability of the concrete can be improved.
Description
Technical field
The present invention relates to building material field, particularly the first grinding slag activate micro powder of a kind of utilization is prepared concrete method.
Background technology
Along with the fast development of national economy, the dynamics of capital construction continues to increase, and market has reached unprecedented height to the demand of cement concrete.Due to the quickening of China's process of industrialization, make industrial solid castoff discharge in a large number, pile up, the physical environment that the severe contamination mankind depend on for existence on the other hand.By the industrial solid castoff complementary gelling material of grog or cement as an alternative, this not only can effectively improve the high energy consumption that cement concrete industry has, the state of the high comsumption of natural resources, has also fundamentally solved the processing problem of solid industrial residue.
The trade waste such as flyash, slag utilisation technology in cement concrete is ripe, and supply falls short of demand for the flyash of high-quality and slag.And another kind of industrial residue--slag, though applied for many years, but because slag exists the technical bottlenecks such as stability is bad, grindability is very poor, early activity is very low, thereby fail large-scale application in cement concrete, the discharge of slag has still caused huge pressure to environment always.
In order to solve the problems such as steel slag stability is bad, grindability is poor, early activity is low, many researchers and industrial enterprise improve constantly the fineness of slag micro powder, to improving its activity.Application number is 00124822.7, name is called < < high-activity fine steelslag powder as additive of concrete and prepares in the disclosed technical side's scheme of Chinese invention patent of concrete method > > the high-activity fine steelslag powder specific surface area>=400m of employing
2/ kg.Application number is 99116326.5, name is called in the technology of preparing of < < high-activity concrete additive and the disclosed technical side's scheme of Chinese invention patent of method > >, the Bo Shi surface-area 450～750m of slag
2/ kg.Application number is 200910060802.0, name is called in the disclosed technical side's scheme of Chinese invention patent of a < < low cost active powder concrete and preparation method thereof > >, the specific surface area>=450m of steel-making slag powder
2/ kg.Application number is 200910092758.1, name is called < < and utilizes ball-milling waste residue to prepare in the disclosed technical side's scheme of Chinese invention patent of method > > of high-performance concrete additive, and the specific surface area of steel-making slag powder is at least 4500m
2/ kg.Application number is 200910131849.1, name is called in the disclosed technical side's scheme of Chinese invention patent of a < < railway concrete beam support novel winter cement based grouting agent > >, and the specific surface area of steel-making slag powder is 400～600m
2/ kg.Application number is 201010256621.8, name is called < < high-strength high-performance concrete with compound mineral admixture and prepares in the disclosed technical side's scheme of Chinese invention patent of concrete method > > the specific surface area>=600m of steel-making slag powder
2/ kg.Application number is 201010611074.0, and name is called < < for concrete
in art side's scheme, the specific surface area>=600m of steel-making slag powder
2/ kg.Application number is 201110428021.X, name is called in the disclosed technical side's scheme of Chinese invention patent of a < < low shrinkage full-tailing fine aggregate sleeper concrete and preparation method thereof > >, the specific surface area 4000～6000cm of steel-making slag powder
2/ g.
But result shows, its fineness of raising simply can not effectively improve its reactive behavior.Excessive grinding due to slag causes the energy consumption of slag processing high on the contrary, has increased slag processing cost, makes slag micro powder on market, lack price advantage, and this has also limited promoting the use of of slag to a certain extent.
Summary of the invention
The present invention seeks to provide in order to improve the deficiencies in the prior art the first grinding slag activate micro powder of a kind of utilization to prepare concrete method.
Technical scheme of the present invention is: concrete method is prepared in a kind of utilization just grinding slag activate micro powder, it is characterized in that: by the slag raw material after deironing, through first grinding to specific surface area, be 200～300m
2/ Kg, the slag activate micro powder that the first grinding of then usining obtains partly replaces cement in cement concrete as complementary gelling material, wherein just the replacement quality of grinding slag activate micro powder be in cement concrete cement quality 5～20%.
Preferred described slag raw material is middle high alkalinity bessemer furnace slag, and basicity scope is 1.8～3.5.Just the slag activate micro powder of grinding is 200～300m through first grinding to specific surface area
2/ Kg, its particle size range, between other gelling material and fine aggregate, can be filled the space between other gelling material and fine aggregate.Preferred described particle matching type slag activate micro powder is made through ball milling grinding or vertical mill grinding by slag raw material.
Cement concrete described in the present invention is applicable to all commerical ready-mixed concretes, the commerical ready-mixed concrete of the models such as preferred C20, C30, C40, C50.
Beneficial effect:
The present invention, from the angle of particle coupling, has abandoned and by promoting fineness, had improved the thinking of slag-metal reaction activity in the past, by steel slag grinding to specific surface area, is only 200～300m
2/ Kg.Transition material using slag as other gelling material and fine aggregate, slag micro powder is filled the space between other gelling material and fine aggregate on the one hand, promoted concrete degree of compactness, the reactive behavior that steel slag particle has also contributes to reduce the porosity of concrete system, and concrete intensity is improved; On the other hand, the reactive behavior that steel slag particle is lower can reduce the shrinkage character of cementitious material system, improves concrete volume stability.This disposal and utilization mode to slag has greatly reduced energy consumption and the grinding element loss in slag processing process, greatly reduces the production cost of slag micro powder.And in actual applications, controlling the consumption of slag micro powder well can not cause the problems such as stability is bad.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment mono-: a kind of particle matching type slag activate micro powder and preparation and application method thereof
Comparative example: the technical indicator of C20 commerical ready-mixed concrete of take is benchmark
C20 commerical ready-mixed concrete proportioning is as shown in the table, and (all raw materials are mass parts, units/kg/m
3):
Maturing 7d intensity is 14.2Mpa.
28d intensity is 24.1Mpa.
In 28d air, limiting contract with dry rate is 3.9 * 10
-4.
Slag raw material basicity after deironing is 3.5, and through vertical mill grinding, becoming specific surface area is 300m
2the micro mist of/Kg, in C20 concrete, mix 30Kg( replace cement consumption 15%), this concrete mix (kg/m
3) as shown in the table: this concrete mix (kg/m
3) as shown in the table:
According to benchmark proportioning mixing, become concrete.
Maturing 7d intensity is 14.0Mpa
28d intensity is 25.2Mpa.
In 28d air, limiting contract with dry rate is 2.8 * 10
-4.
Vs comparative examples, 7d intensity and comparative example are suitable, and 28d intensity is slightly improved, and in 28d air, limits contract with dry rate and have clear improvement.
Embodiment bis-: a kind of particle matching type slag activate micro powder and preparation and application method thereof
Comparative example: the technical indicator of C30 commerical ready-mixed concrete of take is benchmark
C30 commerical ready-mixed concrete proportioning is as shown in the table, and (all raw materials are mass parts, units/kg/m
3):
Maturing 7d intensity is 25.2Mpa.
28d intensity is 35.1Mpa.
In 28d air, limiting contract with dry rate is 5.0 * 10
-4.
Slag raw material basicity after deironing is 2.5, and through ball mill grinding, becoming specific surface area is 215m
2the micro mist of/Kg, in C30 concrete, mix 25Kg( replace cement consumption 10%), this concrete mix (kg/m
3) as shown in the table:
According to benchmark proportioning mixing, become concrete.
Maturing 7d intensity is 24.9Mpa
28d intensity is 36.2Mpa.
In 28d air, limiting contract with dry rate is 3.5 * 10
-4.
Vs comparative examples, 7d intensity and comparative example are suitable, and 28d intensity is slightly improved, and in 28d air, limits contract with dry rate and have clear improvement.
Embodiment tri-, a kind of particle matching type slag activate micro powder and preparation and application method thereof
Comparative example: the technical indicator of C40 commerical ready-mixed concrete of take is benchmark
C40 commerical ready-mixed concrete proportioning is as shown in the table, and (all raw materials are mass parts, units/kg/m
3):
Maturing 7d intensity is 32.5Mpa.
28d intensity is 46.3Mpa.
In 28d air, limiting contract with dry rate is 6.5 * 10
-4.
Slag raw material basicity after deironing is 1.8, and through ball mill grinding, becoming specific surface area is 300m
2the micro mist of/Kg, in C40 concrete, mix 60Kg( replace cement consumption 20%), this concrete mix (kg/m
3) as shown in the table:
According to benchmark proportioning mixing, become concrete.
Maturing 7d intensity is 31.9Mpa
28d intensity is 47.2Mpa.
In 28d air, limiting contract with dry rate is 4.9 * 10
-4.
Embodiment tetra-, a kind of particle matching type slag activate micro powder and preparation and application method thereof
Comparative example: the technical indicator of C50 commerical ready-mixed concrete of take is benchmark
C50 commerical ready-mixed concrete proportioning is as shown in the table, and (all raw materials are mass parts, units/kg/m
3):
Maturing 7d intensity is 41.5Mpa.
28d intensity is 58.7Mpa.
In 28d air, limiting contract with dry rate is 8.7 * 10
-4.
Slag raw material basicity after deironing is 3.1, and through ball mill grinding, becoming specific surface area is 245m
2the micro mist of/Kg, in C50 concrete, mix 16Kg( replace cement consumption 5%), this concrete mix (kg/m
3) as shown in the table:
According to benchmark proportioning mixing, become concrete.
Maturing 7d intensity is 42.9Mpa.
28d intensity is 59.5Mpa.
In 28d air, limiting contract with dry rate is 7.9 * 10
-4.
Vs comparative examples, 7d intensity and 28d intensity are all suitable with comparative example, and are slightly improved, and limit contract with dry rate and be also improved in 28d air.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (3)
1. the first grinding slag activate micro powder of utilization is prepared a concrete method, it is characterized in that: by the slag raw material after deironing, through first grinding to specific surface area, be 200～300m
2/ Kg, the slag activate micro powder that the first grinding of then usining obtains partly replaces cement in cement concrete as complementary gelling material, wherein just the replacement quality of grinding slag activate micro powder be in cement concrete cement quality 5～20%.
2. method according to claim 1, is characterized in that: described slag raw material is middle high alkalinity bessemer furnace slag, and basicity scope is 1.8～3.5.
3. method according to claim 1, is characterized in that just grinding is ball milling grinding or vertical mill grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310309510.2A CN103553512A (en) | 2013-07-22 | 2013-07-22 | Method for preparing concrete by using primarily ground steel slag active micro powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310309510.2A CN103553512A (en) | 2013-07-22 | 2013-07-22 | Method for preparing concrete by using primarily ground steel slag active micro powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103553512A true CN103553512A (en) | 2014-02-05 |
Family
ID=50007932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310309510.2A Pending CN103553512A (en) | 2013-07-22 | 2013-07-22 | Method for preparing concrete by using primarily ground steel slag active micro powder |
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| Country | Link |
|---|---|
| CN (1) | CN103553512A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608066A (en) * | 2018-12-13 | 2019-04-12 | 江苏沂淮水泥有限公司 | A kind of early-strength mine filling cementitious material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100826A (en) * | 1987-02-13 | 1987-12-16 | 本溪钢铁公司 | Utilize the high reactivity bessemer furnace slag to produce the method for ferric-cement |
| JPH06321590A (en) * | 1992-05-25 | 1994-11-22 | Pelt & Hooykaas Bv | Cement composition and its preparation |
| CN1290667A (en) * | 2000-09-18 | 2001-04-11 | 中国建筑材料科学研究院 | Mixed cement material with fine active steel slag powder and method of preparing high grade cement with it |
| CN1792982A (en) * | 2005-11-25 | 2006-06-28 | 华南理工大学 | Silicate cement of precenting chlorate corrosion |
-
2013
- 2013-07-22 CN CN201310309510.2A patent/CN103553512A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100826A (en) * | 1987-02-13 | 1987-12-16 | 本溪钢铁公司 | Utilize the high reactivity bessemer furnace slag to produce the method for ferric-cement |
| JPH06321590A (en) * | 1992-05-25 | 1994-11-22 | Pelt & Hooykaas Bv | Cement composition and its preparation |
| CN1290667A (en) * | 2000-09-18 | 2001-04-11 | 中国建筑材料科学研究院 | Mixed cement material with fine active steel slag powder and method of preparing high grade cement with it |
| CN1792982A (en) * | 2005-11-25 | 2006-06-28 | 华南理工大学 | Silicate cement of precenting chlorate corrosion |
Non-Patent Citations (1)
| Title |
|---|
| 王强等: "转炉钢渣粉在水泥混凝土中应用的研究进展", 《混凝土》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608066A (en) * | 2018-12-13 | 2019-04-12 | 江苏沂淮水泥有限公司 | A kind of early-strength mine filling cementitious material and preparation method thereof |
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Application publication date: 20140205 |