CN107805026A - A kind of full slag steel fiber reinforced concrete - Google Patents
A kind of full slag steel fiber reinforced concrete Download PDFInfo
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- CN107805026A CN107805026A CN201711330244.6A CN201711330244A CN107805026A CN 107805026 A CN107805026 A CN 107805026A CN 201711330244 A CN201711330244 A CN 201711330244A CN 107805026 A CN107805026 A CN 107805026A
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- steel fiber
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
-
- 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
-
- 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
- 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)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of full slag steel fiber reinforced concrete, belong to technical field of concrete.Excellent workability and mechanical property, the full slag steel fiber reinforced concrete of endurance quality are had concurrently the technical problem to be solved in the present invention is to provide a kind of.A kind of full slag steel fiber reinforced concrete, it contains the component of following mass parts：260~350 parts of cement, 90~105 parts of flyash, 960~1060 parts of slag sand, 780~890 parts of slag stone, 200~230 parts of water, 6.0~8.7 parts of additive, 40~100 parts of steel fibre.The present invention effectively combines steel fibre and full mineral slag concrete, not only increase flexural capacity, the bending resistance of full mineral slag concrete, improve endurance quality, at the same avoid add steel fibre after concrete workability decline the problem of, can be widely applied for actual production.
Description
Technical field
The invention belongs to technical field of concrete, and in particular to a kind of full slag steel fiber reinforced concrete.
Background technology
High-titanium dry slag is that natural cooling or hot application are formed melted gangue in atmosphere caused by smelting vanadium titano-magnetite
A kind of stone material with some strength, per annual emissions be millions of tons, this kind of material has TiO2Content is high, hole
The features such as rate is big, by long-term experimental study and practical application, the concrete of Panzhihua City nearly 70% is using high titanium weight ore deposit
Slag sandstone carries out concrete production as concrete aggregate.High-titanium dry slag (hereinafter referred to as full slag) concrete and general aggregate
Concrete equally has high voltage intensity high but anti-the characteristics of rolling over bending resistance deficiency.Steel fiber reinforced concrete is as a kind of NEW TYPE OF COMPOSITE material
Material, split with its excellent tension, bending resistance, resistance, impact resistance, endurance, the physical and mechanical property such as high tenacity, be now widely used for
Architectural engineering, hydraulic engineering, bridges in highway engineering, highway pavement, railway public affairs journey, pipeline engineering and maintenance and reinforcement engineering etc. are each
Professional domain.As architectural engineering is to the increasingly strict of the requirements such as concrete bending resistance, anti-folding, tensile strength, steel fiber reinforced concrete
Application will progressively increase.
At present, for the coarse-fine aggregate that most domestic steel fiber reinforced concrete uses for natural sand stone, it does not contain fiber reinforcement
Material, it is a kind of fragile material, although compression strength is preferable, bending resistance flexural capacity is weaker.Panxi Diqu high-titanium dry slag
Ripe application, the following full slag steel fiber reinforced concrete of Panxi Diqu will play dominance in steel fiber reinforced concrete field and make
With.But because high-titanium dry slag aggregate has relative to natural sand stone porous water-absorbing, containing the characteristic such as powder is more in itself, steel is fine in addition
The addition of dimension can further increase the difficulty of control concrete workability, and how to adjust each raw material usage makes full slag steel fibre
It is crucial that concrete, which has workability and mechanical property, endurance quality etc. concurrently,.
The content of the invention
The technical problems to be solved by the invention, which are to provide, a kind of has excellent workability and mechanical property, endurance quality concurrently
Full slag steel fiber reinforced concrete.
Technical scheme there is provided a kind of full slag steel fiber reinforced concrete used by the present invention solves above-mentioned technical problem,
It contains the component of following mass parts：260~350 parts of cement, 90~105 parts of flyash, 960~1060 parts of slag sand, slag
780~890 parts of stone, 200~230 parts of water, 6.0~8.7 parts of additive, 40~100 parts of steel fibre.
Wherein, in full slag steel fiber reinforced concrete described above, the slag sand is high-titanium dry slag sand, modulus of fineness
For 2.6~2.9, single-stage maximum crush index≤25%, bulk density is 1720~1760kg/m3, apparent density be 3200~
3300kg/m3, voidage is 46~48%, Han Fen Liang≤10%.
Wherein, in full slag steel fiber reinforced concrete described above, the slag stone is high-titanium dry slag rubble, 5-25mm
Continuous grading, crush index are 12~15%, and voidage is 51~52%, and bulk density is 1300~1350kg/m3, it is apparent close
Spend for 2800~2830kg/m3。
Wherein, in full slag steel fiber reinforced concrete described above, the additive is efficient retarding and water reducing agent.
Wherein, in full slag steel fiber reinforced concrete described above, the steel fibre is shear model steel fiber, and draw ratio is
30~100,7.75~7.85g/cm of density3。
Wherein, in full slag steel fiber reinforced concrete described above, the cement is Portland cement 42.5R.
Wherein, in full slag steel fiber reinforced concrete described above, the flyash is II grade of flyash.
Wherein, in full slag steel fiber reinforced concrete described above, the sand coarse aggregate ratio of the full slag steel fiber reinforced concrete is
54.3%~58.6%, water-cement ratio is 0.50~0.61, strength grade C30-C40.
On the basis of above-mentioned full slag steel fiber reinforced concrete, it is fine that the present invention have also been devised three kinds of more specifically full slag steel
Tie up concrete.
Specifically, a kind of full slag steel fiber reinforced concretes of C30, it contains the component of following mass parts：267 parts of cement, powder
101 parts of coal ash, 1045 parts of slag sand, 847 parts of slag stone, 226 parts of water, 6.62 parts of additive, 78 parts of steel fibre.
The sand coarse aggregate ratio of the full slag steel fiber reinforced concretes of C30 described above is 55.4%, water-cement ratio 0.61, steel fiber volume ratio
1.0%.
Specifically, a kind of full slag steel fiber reinforced concretes of C35, it contains the component of following mass parts：305 parts of cement, powder
92 parts of coal ash, 1060 parts of slag sand, 806 parts of slag stone, 223 parts of water, 7.54 parts of additive, 78 parts of steel fibre.
The sand coarse aggregate ratio of the full slag steel fiber reinforced concretes of C35 described above is 57.0%, water-cement ratio 0.56, steel fiber volume ratio
1.0%.
Specifically, a kind of full slag steel fiber reinforced concretes of C40, it contains the component of following mass parts：Cement 345kg, powder
90 parts of coal ash, 1046 parts of slag sand, 785 parts of slag stone, 219 parts of water, 8.70 parts of additive, 78 parts of steel fibre.
The sand coarse aggregate ratio of the full slag steel fiber reinforced concretes of C40 described above is 56.8%, water-cement ratio 0.50, steel fiber volume ratio
1.0%.
The beneficial effects of the invention are as follows：
The present invention with the addition of steel fibre on the basis of full mineral slag concrete, by being adjusted to the dosage of each component, effectively
Steel fibre and full mineral slag concrete are combined, not only increase flexural capacity, the bending resistance of full mineral slag concrete, is improved
Endurance quality, while avoid and add the problem of concrete workability after steel fibre declines；Full slag steel fibre of the invention mixes
Solidifying soil has the characteristics of high excellent workability, compression strength, good endurance concurrently, while high-titanium dry slag contains in concrete of the present invention
Amount is high, significantly improves the utilization rate of discarded object high-titanium dry slag, can be widely applied for actual production.
Embodiment
Specifically, a kind of full slag steel fiber reinforced concrete, it contains the component of following mass parts：260~350 parts of cement,
90~105 parts of flyash, 960~1060 parts of slag sand, 780~890 parts of slag stone, 200~230 parts of water, additive 6.0~
8.7 parts, 40~100 parts of steel fibre.
High-titanium dry slag aggregate (slag sand and slag stone) has porous water-absorbing, more containing powder in itself relative to natural sand stone
Etc. characteristic, the addition of steel fibre in addition can further increase the difficulty of control concrete workability, and the present invention is by a large amount of creation
Property work each component content is adjusted, obtain a suitable component proportion, so as to obtain have concurrently it is excellent and easy
Property and mechanical property, the full slag steel fiber reinforced concrete of endurance quality.
Slag sand is high-titanium dry slag sand in the present invention, and its modulus of fineness is 2.6~2.9, single-stage maximum crush index≤
25%, bulk density is 1720~1760kg/m3, apparent density is 3200~3300kg/m3, voidage is 46~48%, containing powder
Liang≤10%；Slag stone is high-titanium dry slag rubble, and it is melted gangue caused by smelting vanadium-titanium magnetite by blast furnace in air
A kind of stone material by based on the mineral such as titanaugite, perovskite that middle natural cooling or water cooling are formed, 5-25mm continuous gradings,
Crush index is 12~15%, and voidage is 51~52%, and bulk density is 1300~1350kg/m3, apparent density 2800
~2830kg/m3。
Cement is Portland cement 42.5R in the present invention；Flyash is II grade of flyash；Additive is retardation setting high efficiency
Water reducer.
Steel fibre is shear model steel fiber in the present invention, and draw ratio is 30~100,1.75~7.85g/cm of density3.This hair
The volume fraction (i.e. the dosage of steel fibre) of bright middle steel fibre is very crucial to the performance of concrete, and volume fraction is too big, concrete without
Method produces, and can not construct, too small, does not have effect, therefore, inventor in concrete how by steel fibre and other components
And content control carries out lot of experiments in suitable scope.
For the present invention by the adjustment to each component content, volume fraction of the steel fibre in concrete is 0.5~2.0%, is made
Full slag steel fiber reinforced concrete has excellent workability and mechanical property, endurance quality concurrently, and its sand coarse aggregate ratio is 54.3%~58.6%,
Water-cement ratio is 0.50~0.61, strength grade C30-C40, and the intensity of concrete is high and workability is excellent.
On the basis of above-mentioned full slag steel fiber reinforced concrete, using each raw material, the present invention have also been devised three kinds more specifically
Full slag steel fiber reinforced concrete.
Specifically, a kind of full slag steel fiber reinforced concretes of C30, it contains the component of following mass parts：267 parts of cement, powder
101 parts of coal ash, 1045 parts of slag sand, 847 parts of slag stone, 226 parts of water, 6.62 parts of additive, 78 parts of steel fibre.
The sand coarse aggregate ratio of the full slag steel fiber reinforced concretes of C30 described above is 55.4%, water-cement ratio 0.61, steel fiber volume ratio
1.0%.
Specifically, a kind of full slag steel fiber reinforced concretes of C35, it contains the component of following mass parts：305 parts of cement, powder
92 parts of coal ash, 1060 parts of slag sand, 806 parts of slag stone, 223 parts of water, 7.54 parts of additive, 78 parts of steel fibre.
The sand coarse aggregate ratio of the full slag steel fiber reinforced concretes of C35 described above is 57.0%, water-cement ratio 0.56, steel fiber volume ratio
1.0%.
Specifically, a kind of full slag steel fiber reinforced concretes of C40, it contains the component of following mass parts：Cement 345kg, powder
90 parts of coal ash, 1046 parts of slag sand, 785 parts of slag stone, 219 parts of water, 8.70 parts of additive, 78 parts of steel fibre.
The sand coarse aggregate ratio of the full slag steel fiber reinforced concretes of C40 described above is 56.8%, water-cement ratio 0.50, steel fiber volume ratio
1.0%.
Full slag steel fiber reinforced concrete can be constructed by the following method in the present invention：First by sandstone aggregate (flyash, ore deposit
Slag sand and slag stone) stir (generally 5~20s), and add steel fibre and stir (generally 15~45s), then
Cement mixing uniformly (generally 5~20s) is added, water is eventually adding and additive stirs, overall mixing time preferably controls
In 90~150s or so.Needed when pouring according to scene using directly putting, the mode such as pump, it is necessary to strictly the control slump and use water
Amount, in case there is phenomena such as isolation bleeding in full slag steel fiber reinforced concrete.It should be noted that not take up top layer steel fibre leads when receiving light
Cause concrete surface to form cut, timely cover film or straw mattress and watering maintenance is carried out after the completion of pouring.
The present invention is described in further detail below by embodiment, but therefore not limited the scope of the present invention
Among described scope of embodiments.
Primary raw material used in the embodiment of the present invention is：
Cement：Portland cement 42.5R；
Flyash：II grade of flyash；
Slag sand：High-titanium dry slag sand, modulus of fineness are 2.8 or so, single-stage maximum crush index≤25%, bulk density
For 1720kg/m3, apparent density 3300kg/m3, voidage 48%, Han Fen Liang≤10%；
Slag stone：High-titanium dry slag rubble, 5-25mm continuous gradings, crush index 15%, voidage 52%, accumulation
Density is 1360kg/m3, apparent density 2830kg/m3；
Additive：Efficient retarding and water reducing agent；
Steel fibre：Shear model steel fiber, draw ratio 100, density 7.85g/cm3。
Embodiment 1
First, prepared by full slag steel fiber reinforced concrete
The component proportion of three groups of full slag steel fiber reinforced concretes is present embodiments provided, is specifically matched as shown in table 1 below：
The component proportion of the full slag steel fiber reinforced concrete of table 1
Above-mentioned three kinds full slag steel fiber reinforced concretes are prepared as follows：First flyash, slag sand and slag stone are stirred
10s is mixed, steel fibre stirring 30s is added, then adds cement mixing 10s, be eventually adding water and additive stirs, it is overall
Mixing time is preferably controlled in 120s or so, produces full slag steel fiber reinforced concrete.
2nd, full slag steel fiber reinforced concrete test result
The performance of above-mentioned full slag steel fiber reinforced concrete is shown in Table 2：
The performance test of the full slag steel fiber reinforced concrete of table 2
From Tables 1 and 2 data, the present invention is complete, and slag proportion of steel fibrous-concrete compares conventional concrete match ratio
Have the advantage that：On the premise of keeping workability (slump) to meet to require, effective lifting full mineral slag concrete compression strength,
Rupture strength；The failure mode of full mineral slag concrete is changed, improves its fragility.
Claims (10)
1. full slag steel fiber reinforced concrete, it is characterised in that：Component containing following mass parts：260~350 parts of cement, fine coal
90~105 parts of ash, 900~1200 parts of slag sand, 750~950 parts of slag stone, 200~230 parts of water, 6.0~8.7 parts of additive,
40~100 parts of steel fibre.
2. full slag steel fiber reinforced concrete according to claim 1, it is characterised in that：The slag sand is high-titanium dry slag
Sand, modulus of fineness are 2.6~2.9, and single-stage maximum crush index≤25%, bulk density is 1720~1760kg/m3, it is apparent close
Spend for 3200~3300kg/m3, voidage is 46~48%, Han Fen Liang≤10%.
3. full slag steel fiber reinforced concrete according to claim 1, it is characterised in that：The slag stone is high-titanium dry slag
Rubble, 5~25mm continuous gradings, crush index be 12~15%, voidage be 51~52%, bulk density be 1300~
1350kg/m3, apparent density is 2800~2830kg/m3。
4. full slag steel fiber reinforced concrete according to claim 1, it is characterised in that：The additive subtracts for retardation setting high efficiency
Aqua.
5. full slag steel fiber reinforced concrete according to claim 1, it is characterised in that：The steel fibre is fine for shearing shaped steel
Dimension, draw ratio are 30~100, and density is 7.75~7.85g/cm3。
6. full slag steel fiber reinforced concrete according to claim 1, it is characterised in that：The cement is normal silicate water
Mud 42.5R；The flyash is II grade of flyash.
7. the full slag steel fiber reinforced concrete according to any one of claim 1~6, it is characterised in that：The full slag steel
The sand coarse aggregate ratio of fiber concrete is 54.3%~58.6%, and water-cement ratio is 0.50~0.61, strength grade C30-C40.
The full slag steel fiber reinforced concretes of 8.C30, it is characterised in that：Component containing following mass parts：267 parts of cement, flyash
101 parts, 1045 parts of slag sand, 847 parts of slag stone, 226 parts of water, 6.62 parts of additive, 78 parts of steel fibre.
The full slag steel fiber reinforced concretes of 9.C35, it is characterised in that：Component containing following mass parts：305 parts of cement, flyash
92 parts, 1060 parts of slag sand, 806 parts of slag stone, 223 parts of water, 7.54 parts of additive, 78 parts of steel fibre.
10.C40 full slag steel fiber reinforced concrete, it is characterised in that：Component containing following mass parts：Cement 345kg, flyash
90 parts, 1046 parts of slag sand, 785 parts of slag stone, 219 parts of water, 8.70 parts of additive, 78 parts of steel fibre.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711330244.6A CN107805026A (en) | 2017-12-13 | 2017-12-13 | A kind of full slag steel fiber reinforced concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711330244.6A CN107805026A (en) | 2017-12-13 | 2017-12-13 | A kind of full slag steel fiber reinforced concrete |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224369A (en) * | 2013-04-09 | 2013-07-31 | 四川省交通运输厅公路规划勘察设计研究院 | Anti-radiation concrete produced from slag aggregate, and production method thereof |
| CN106747046A (en) * | 2016-11-17 | 2017-05-31 | 攀钢集团工程技术有限公司 | A kind of different pouring procedures of full mineral slag concrete and its different parts |
-
2017
- 2017-12-13 CN CN201711330244.6A patent/CN107805026A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224369A (en) * | 2013-04-09 | 2013-07-31 | 四川省交通运输厅公路规划勘察设计研究院 | Anti-radiation concrete produced from slag aggregate, and production method thereof |
| CN106747046A (en) * | 2016-11-17 | 2017-05-31 | 攀钢集团工程技术有限公司 | A kind of different pouring procedures of full mineral slag concrete and its different parts |
Non-Patent Citations (2)
| Title |
|---|
| 王福川等: "《建筑工程材料》", 28 February 1995, 科学技术文献出版社 * |
| 邓德华: "《土木工程材料 第3版》", 31 August 2017, 中国铁道出版社 * |
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Application publication date: 20180316 |