CN105503090A - Grade-G85 steel and iron slag micropowder cement-based cementing material and manufacturing method thereof - Google Patents
Grade-G85 steel and iron slag micropowder cement-based cementing material and manufacturing method thereof Download PDFInfo
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- CN105503090A CN105503090A CN201511028535.0A CN201511028535A CN105503090A CN 105503090 A CN105503090 A CN 105503090A CN 201511028535 A CN201511028535 A CN 201511028535A CN 105503090 A CN105503090 A CN 105503090A
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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
- 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
- C04B28/04—Portland cements
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building materials, relates to a grade-G85 steel and iron slag micropowder cement-based cementing material and a manufacturing method thereof. The grade-G85 steel and iron slag micropowder cement-based cementing material comprises the following components in parts by weight: 40 to 50 parts of cement, 50 to 55 parts of G85 steel and iron slag micropowder and 0 to 5 parts of fly ash. The manufacturing method of the material comprises the following steps: carrying out the magnetic separation for steel slag, and grinding the selected steel slag to obtain the steel slag micropowder; blending the steel slag micropowder and grade-S95 slag powder to obtain G85 steel and iron slag micropowder; and sufficiently mixing the G85 steel and iron slag micropowder, the cement and the fly ash. The cementing material is normal in cementing time, qualified in stability, high in later strength, capable of meeting the internal requirement on the physical and mechanical performance and good in durability.
Description
Technical field
The present invention relates to building material field, particularly a kind of G85 level steel slag micro mist cement-based gelling material and preparation method thereof.
Background technology
At present, steel industry produces the trade wastes such as a large amount of slags, slag every year, these trade wastes also do not obtain limited utilization, and the waste of bulk deposition can cause environmental pollution, how to utilize these trade wastes day by day to become the focus of people's concern efficiently.
In building industry, cement concrete is widely used, mineral admixture is mixed in cement concrete, can reduce the consumption of cement greatly, iron and steel ground-slag is a kind of efficient mineral admixture be composited by steel-making slag powder, slag powders, mixing of iron and steel ground-slag, have utilize slag, with the comprehensive utilization of slag, reduce engineering cost, increase the utilization ratio of trade waste, there is good economic benefit and environmental benefit.
In GB/T28293-2012 " iron and steel ground-slag ", propose the Three Estate of iron and steel ground-slag, but do not provide each grade collective's mixture proportion and to raw-material related request, in order to improve the utility value of iron and steel ground-slag, need to carry out rational stage treatment.
In GB/T18046-2008 " GBFS in cement and concrete ", give the slag powders of Three Estate, wherein S95 grade slag powder density>=2.8g/cm
3, ultimate compression strength activity index 7 days>=75%, 28 days>=95%.
In GB/T1596-2005 " flyash in cement and concrete ", give the flyash of Three Estate, wherein II grade of C class flyash 45um tail over≤25%, free calcium oxide content is less than 4.0%.
Summary of the invention
The object of this invention is to provide a kind of G85 level steel slag micro mist cement-based gelling material and preparation method thereof, the method not only can reduce the consumption of cement, the comprehensive utilization of slag and slag can also be promoted, there is the comprehensive utilization utilizing Steel Plant's trade waste, there is good economic benefit and environmental benefit.
A kind of G85 level steel slag micro mist cement-based gelling material, described material comprises following component by weight: cement 40-50 part, G85 steel slag micro mist 50-55 part, flyash 0-5 part.
Described cement is the cement of P.O.42.5 ordinary Portland cement and above label.
Described flyash used is II grade of C class flyash.
Described G85 level steel slag micro mist comprises following component by weight: slag micro powder 30-40 part, slag powders 60-70 part.
Described G85 level steel slag micro mist ultimate compression strength activity index meets 7d >=65%, 28d >=85%.
Described slag micro powder specific surface area>=600m
2/ kg, iron-holder≤0.5%, basicity factor>=2.2.Steel-making slag powder is levigate specific surface area>=600m
2/ kg, makes steel slag micro mist reach G85 grade, and adding of slag micro powder makes the activity index of its 7d be more than or equal to 75%, the requirement of 7d>=65% in GB, improves the hydratability in early stage.
Described slag powders is S95 grade slag powder, and its leading indicator is: density>=2.8g/cm
3, specific surface area>=400m
2/ kg, 7 days activity index>=75%, 28 days activity index>=95%.
Make the method for described material, it is as follows that described method comprises step:
1) select the slag of basicity factor >=2.2, carry out magnetic separation, make its iron-holder≤0.5%, the slag chosen is carried out grinding, obtains slag micro powder;
2) by slag micro powder, S95 grade slag powder at 25-55 DEG C, humidity≤30%, blended, the blended time is 15min, obtains G85 steel slag micro mist;
3) by G85 steel slag micro mist, flyash, cement Homogeneous phase mixing;
Complete the making of G85 steel slag micro mist cement-based gelling material.
Described step 2) blending condition is 25-55 DEG C, humidity≤30%, the blended time is 10-20min.
The invention provides and the object of this invention is to provide a kind of G85 level steel slag micro mist cement-based gelling material and preparation method thereof, beneficial effect is as follows:
1, steel slag micro mist is composited by slag micro powder and slag powders, and wherein slag micro powder carries out separate grinding, is milled down to specific surface area>=600m
2/ kg, mix with S95 grade slag powder again, steel-making slag powder levigate is conducive to exciting of active ingredient in slag, reduce the content of free calcium oxide in steel slag (f-CaO), slag micro powder mixes with slag powders, make bi-material in hydration process, have activity excitation effect, make the cement-based gelling material mixing steel slag micro mist have good mechanical property;
2, the G85 level steel slag micro mist cement-based gelling material for preparing of the present invention, a series of hydration reaction can be there is, there is higher hydration activity, levigate due to steel-making slag powder, slag micro powder activity increases, then mixes with S95 slag powders, and slag micro powder and slag powders produce activity excitation effect, further increase the hydration activity of slag micro powder, therefore can be used for preparing a kind of highly active cement-based gelling material;
3, gelling material of the present invention is normal for time of coagulation, and stability is qualified, has very high later strength, and physical mechanics property all can meet Standard, and has good weather resistance;
4, G85 level steel slag micro mist cement-based gelling material, preparation technology is simple, significantly can increase the utilization ratio of slag micro powder, the collaborative utilization of slag micro powder and slag powders, the comprehensive utilization ratio of Steel Plant to trade waste can be improved, reduce trade waste to the pollution of environment;
5, the cement-based gelling material that prepared by G85 level steel slag micro mist has good physicals, and has good weather resistance.
Embodiment
Further illustrate the present invention below in conjunction with embodiment, but the scope of protection of present invention is not limited to the scope of embodiment statement.
Embodiment 1
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, and described material comprises following component by weight: cement 40 parts, G85 steel slag micro mist 55 parts, 5 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 30 parts, slag powders 70 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
Embodiment 2
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 40 parts, G85 steel slag micro mist 52 parts, 3 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, each constituent mass per-cent: slag micro powder 35 parts, slag powders 65 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
Embodiment 3
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 48 parts, G85 steel slag micro mist 52 parts, 2 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 38 parts, slag powders 64 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
5) it the results are shown in Table 1.
Embodiment 4
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 50 parts, G85 steel slag micro mist 53 parts, 3 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 32 parts, slag powders 68 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
5) it the results are shown in Table 1
Embodiment 5
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 50 parts, G85 steel slag micro mist 45 parts, 5 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 34 parts, slag powders 66 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
5) it the results are shown in Table 1.
Embodiment 6
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 50 parts, G85 steel slag micro mist 45 parts, 5 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 36 parts, slag powders 64 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
5) it the results are shown in Table 1.
Embodiment 7
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 50 parts, G85 steel slag micro mist 45 parts, 5 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 38 parts, slag powders 62 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
5) it the results are shown in Table 1.
Embodiment 8
1) cement-based gelling material is mixed by cement, G85 level steel slag micro mist, flyash, by weight: cement 50 parts, G85 steel slag micro mist 45 parts, 5 parts, flyash;
2) cement is selected to be P.O.42.5 ordinary Portland cement; Select slag micro powder meet specific surface area>=600m
2/ kg, control iron-holder≤0.5%, water content≤0.5%, basicity factor is 2.3; Slag powders is selected to be S95 grade slag powder;
3) G85 level steel slag micro mist is configured, by weight: slag micro powder 40 parts, slag powders 60 parts;
4) cement, flyash, G85 level steel slag micro mist are fully mixed, prepare cement-based gelling material, measure the standard consistency water requirement of cement-based gelling material, time of coagulation, stability according to the method for GB1346-2011-T; The mortar fluidity of cement-based gelling material is measured according to the method for GB/T2419-2005; Cement mortar strength and the activity index of cement-based gelling material is measured according to GB/T17671-1999.
5) it the results are shown in Table 1.
Table 1G85 level steel slag micro mist cement-based gelling material test-results
The above embodiments are only the preferred technical solution of the present invention, and should not be considered as restriction of the present invention, and the embodiment in the application and the feature in embodiment, can arbitrary combination mutually when not conflicting.The technical scheme that protection scope of the present invention should be recorded with claim, the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection scope of the present invention.
Claims (9)
1. a G85 level steel slag micro mist cement-based gelling material, is characterized in that: described material comprises following component by weight: cement 40-50 part, G85 steel slag micro mist 50-55 part, flyash 0-5 part.
2. material according to claim 1, is characterized in that: described cement is the cement of P.O.42.5 ordinary Portland cement and above label.
3. material according to claim 1, is characterized in that: described flyash used is II grade of C class flyash.
4. material according to claim 1, is characterized in that: described G85 level steel slag micro mist ultimate compression strength meets 7 days activity index >=65%, 28 days activity index >=85%.
5. the material according to claim 1-4 any one, is characterized in that: described G85 level steel slag micro mist comprises following component by weight: slag micro powder 30-40 part, slag powders 60-70 part.
6. material according to claim 5, is characterized in that: described slag powders is S95 grade slag powder, and its leading indicator is: density>=2.8g/cm
3, specific surface area>=400m
2/ kg, 7 days activity index>=75%, 28 days activity index>=95%.
7. material according to claim 5, is characterized in that: described slag micro powder specific surface area>=600m
2/ kg, iron-holder≤0.5%, basicity factor>=2.2.
8. make the method for material described in claim 1-4 or 6 or 7 any one, it is characterized in that, said method comprising the steps of:
1) magnetic separation is carried out to slag, make its iron-holder≤0.5%, the slag chosen is carried out grinding, obtains slag micro powder;
2) slag micro powder, S95 grade slag powder is blended, obtain G85 steel slag micro mist;
3) G85 steel slag micro mist, cement, flyash are fully mixed;
Complete the making of G85 steel slag micro mist cement-based gelling material.
9. method according to claim 8, is characterized in that: described step 2) blending condition is 25-55 DEG C, humidity≤30%, the blended time is 10-20min.
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| CN107935419A (en) * | 2017-12-12 | 2018-04-20 | 常州明华运输有限公司 | A kind of modified steel scoria cement |
| CN109020337A (en) * | 2018-09-13 | 2018-12-18 | 北京浩德互动科技有限公司 | A kind of modified ground granulated blast furnace slag and preparation method thereof |
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