CN102603221B - Preparation method of steel fiber with rough surface - Google Patents
Preparation method of steel fiber with rough surface Download PDFInfo
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- CN102603221B CN102603221B CN 201210087952 CN201210087952A CN102603221B CN 102603221 B CN102603221 B CN 102603221B CN 201210087952 CN201210087952 CN 201210087952 CN 201210087952 A CN201210087952 A CN 201210087952A CN 102603221 B CN102603221 B CN 102603221B
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- steel fiber
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 239000000835 fiber Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 7
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 238000009713 electroplating Methods 0.000 claims description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000748 compression moulding Methods 0.000 claims description 7
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 5
- 239000004567 concrete Substances 0.000 abstract description 36
- 239000011210 fiber-reinforced concrete Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 8
- 238000009499 grossing Methods 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 4
- 239000003637 basic solution Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 206010049119 Emotional distress Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009429 distress Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009490 roller compaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention relates to a preparation method of steel fiber with rough surface. The preparation method comprises the following steps: (1) deoiling the surface of a steel wire with diameter of 0.30-0.90mm, and washing with water until the surface of the steel wire is neutral; (2) coppering the steel wire in an electrobath tank; (3) after coppering is finished, cleaning residues on the surface, and drying the surface of the steel wire; and (4) carrying out pressure molding on the steel wire with roughness not less than 25 mum, and cutting. According to the invention, the method is simple in processing process and high in production efficiency; and when the prepared steel fiber with rough surface is applied to concrete, the bonding strength with the concrete base and the self rust protection capability are improved, and the overall performance of the steel fiber reinforced concrete is improved.
Description
Technical field
The present invention relates to a kind of preparation method of surface irregularity type steel fibers, more specifically relate to a kind of preparation method who is applied to concrete surface irregularity type steel fibers.
Background technology
Steel fiber mixes concrete and is widely used, and compares with the normal concrete of admixture steel fiber not, and cracking resistance, toughness reinforcing effect are very obvious.But along with the raising day by day that engineering requires material of construction, steel fiber and concrete cohesive strength be low reaches the defective of self easy-to-rust, the use range of having limited to steel fiber.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of surface irregularity type steel fibers can improve the bonding strength of steel fiber and concrete substrate and the rust resistance of self when making it be applied to concrete, promote the over-all properties of Steel Fiber Reinforced Concrete.
In prior art, be applied to concrete steel fiber not through processing, the surface is smooth type, the contriver finds under study for action: increase roughness on the surface of steel fiber and can increase friction resistance with concrete substrate, when the concrete bearing load, the friction resistance that has increased can suppress and slow down formation and the development of distress in concrete effectively, thereby improves concrete resistance to cleavage.In the present invention, the contriver adopts at steel fiber surface increases the roughness that a coarse copper plate increases the surface.In prior art, although the appearance of existing copper plated steel fiber is used differently, and its purpose is all in order to obtain the comparatively smooth coating in surface, and the shaggy pattern copper plated steel fiber that the present invention obtains is not accepted in those fields.
Technical scheme of the present invention is as follows:
A kind of preparation method of surface irregularity type steel fibers comprises the steps:
(1) with diameter be the Steel Wire Surface oil removing of 0.30～0.90mm, and water rinses to Steel Wire Surface and is neutral;
(2) steel wire is put into electroplating bath and carried out copper facing;
(3) after copper facing was completed, the residue of clean surface carried out drying to Steel Wire Surface;
(4) with steel wire compression moulding, the cut-out of roughness 〉=25 μ m, namely get the surface irregularity type steel fibers.
In step (2), electroplating current is controlled at 230～270A, and voltage control is at 1.5～2.5V, and electroplating effect is best in this scope.
PH value in step (2) in electroplate liquid is 8.5～9.0, and the concentration of copper sulfate in electroplate liquid is 200 ± 10g/L, satisfies simultaneously the two requirement, is conducive to copper in the deposition of Steel Wire Surface.
In step (2), electroplating time is controlled to be 15～20s, and in the present invention, electroplating time is controlled to be 15～20s, and in this scope, the roughness of copper plate is best.
In step (2), electroplating temperature is controlled at 40 ± 2 ℃, at this temperature, and the process that is conducive to electroplate.
In step (3), the mode that the drying of Steel Wire Surface can adopt the hot blast baking, blow.
In step (4), the steel wire of roughness 〉=25 μ m can be pressed desired shape (as flat type, bow type, impression type, undaform, end hook type etc.), length compression moulding, cut-out.Compression moulding equipment used is steel fiber field roller-compaction equipment commonly used.The surfaceness of steel wire can surface roughness specimens relatively judges whether 〉=25 μ m by being 25 μ m with roughness.
The present invention has the following advantages:
1, complete processing is simple, and production efficiency is high.
2, uneven surface coating of the present invention has increased the friction resistance with concrete substrate, when the concrete bearing load, the friction resistance (being steel fiber and concrete cohesive force) that has increased can suppress and slow down formation and the development of distress in concrete effectively, thereby improves concrete resistance to cleavage.Evidence, uneven surface steel fiber and concrete cohesive strength are approximately 110% of smooth surface steel fibers.
3, uneven surface coating of the present invention and concrete have good adhesive property, so the fiber power consumption of extracting increases, and have reached toughness reinforcing purpose.
4, copper plate has improved antirust, the erosion ability of steel fiber, reduces and delayed the degree that concrete over-all properties that the corrosion of invar fiber causes descends.
Description of drawings
Fig. 1 is the concrete load of admixture steel fiber-sag curve figure not.
Fig. 2 is mixed with the load of surface smoothing type steel fibers-sag curve figure.
Fig. 3 is mixed with the load of surface irregularity type steel fibers-sag curve figure.
Embodiment
The below further describes the present invention with embodiment, but described embodiment only is used for the present invention rather than restriction the present invention.
Embodiment 1
the steel wire that with diameter is 0.60mm carries out surface degreasing by basic solution, water cleans and is neutral to the surface, steel wire after cleaning is put into electroplating bath copper facing, the pH value of electroplate liquid is 8.5, in electroplate liquid, concentration of copper sulfate is 200g/L, main plating current control is at 230A, bath voltage is controlled at 2V, the time of electroplating is 18s, the temperature setting of electroplating process is set to 38 ℃, after copper facing is completed, water clean surface residue, adopt the surface of hot blast drying steel wire, then be the surface roughness specimens comparison of 25 μ m with roughness, record after the surfaceness of steel wire 〉=25 μ m steel wire compression moulding and cut off, obtaining length is the bow type steel fibers of 30mm.
Embodiment 2
the steel wire that with diameter is 0.90mm carries out surface degreasing by basic solution, water cleans and is neutral to the surface, steel wire after cleaning is put into electroplating bath copper facing, the pH value of electroplate liquid is 8.8, in electroplate liquid, concentration of copper sulfate is 210g/L, main plating current control is at 250A, bath voltage is controlled at 1.5V, the time of electroplating is 20s, the temperature setting of electroplating process is set to 40 ℃, after copper facing is completed, water clean surface residue, adopt the surface of hot blast drying steel wire, then be the surface roughness specimens comparison of 25 μ m with roughness, record after the surfaceness of steel wire 〉=25 μ m steel wire compression moulding and cut off, obtaining length is the bow type steel fibers of 60mm.
Embodiment 3
The steel wire that with diameter is 0.30mm carries out surface degreasing by basic solution, water cleans and is neutral to the surface, steel wire after cleaning is put into electroplating bath copper facing, the pH value of electroplate liquid is 9.0, in electroplate liquid, concentration of copper sulfate is 190g/L, and main plating current control is at 270A, and bath voltage is controlled at 2.5V, the time of electroplating is 15s, and the temperature setting of electroplating process is set to 42 ℃; After copper facing is completed, water clean surface residue, then compare with the surface roughness specimens that roughness is 25 μ m on the surface of adopting the hot blast drying steel wire, record after the surfaceness of steel wire 〉=25 μ m steel wire compression moulding and cut off, obtaining length is the bow type steel fibers of 25mm.
Advantage of the present invention is embodied in the application of concrete/mortar, therefore above-described embodiment and surface smoothing type steel fibers are mixed in concrete, contrasts the difference of its mechanical property.
1, preparation Steel Fiber Reinforced Concrete, the concrete test recipe of 20L sees Table 1:
Table 1
Annotate: the arithemetic unit in upper table is kg.
(1) folding strength, intensity test
After concrete standard maintenance 28 days, carry out Mechanics Performance Testing according to " CECS13-2009 Steel Fiber Reinforced Concrete test method standard ", test result sees Table 2:
Table 2
| Sequence number | Folding strength/MPa | Ultimate compression strength/MPa |
| 1, benchmark | 100％ | 100％ |
| 2, smooth type | 118.9％ | 107.2％ |
| 3, embodiment 1 | 129.6％ | 110.5％ |
Annotate: as benchmark 100%, the analogy with it of other Steel Fiber Reinforced Concrete obtains above data with the concrete strength of adding of fiber not.
(2) bend ductility test
Embodiment 1, surface smoothing type steel fibers are mixed in concrete, according to ASTM C 1018-98 standard, experiment records the concrete of admixture steel fiber not, the concrete load-sag curve that is mixed with the concrete of surface smoothing type steel fibers and is mixed with embodiment 1 shaggy pattern is seen respectively Fig. 1, Fig. 2 and Fig. 3, the power of the size of dash area area reflection Bending Concrete toughness in figure, area is larger, and bend ductility is better.By comparison, reference area as can be known: the concrete bend ductility of adding of fiber is the not poorest, and shaggy embodiment 1 compares with the surface smoothing type steel fibers, and concrete bend ductility has improved approximately 20%.
2, preparation made of steel fiber activated powder concrete, the test recipe of 1L sees Table 3:
Table 3
| Cement | The silicon ash | Flyash | Sand | Water | Water reducer | Volume content of steel fibers | |
| 1, benchmark | 0.55 | 0.15 | 0.3 | 1.2 | 0.1767 | 0.0333 | 0.078 |
| 2, surface smoothing type | 0.55 | 0.15 | 0.3 | 1.2 | 0.1767 | 0.0333 | 0.078 |
| 3, embodiment 2 | 0.55 | 0.15 | 0.3 | 1.2 | 0.1767 | 0.0333 | 0.078 |
Annotate: the arithemetic unit in upper table is kg.
After RPC vapor cure 7 days, carry out Mechanics Performance Testing according to " CECS13-2009 Steel Fiber Reinforced Concrete test method ", test result sees Table 4:
Table 4
Annotate: as benchmark 100%, the analogy with it of other Steel Fiber Reinforced Concrete obtains above data with the concrete strength of adding of fiber not.
Claims (2)
1. the preparation method of a surface irregularity type steel fibers, is characterized in that, comprises the steps:
(1) with diameter be the Steel Wire Surface oil removing of 0.30～0.90mm, and water rinses to Steel Wire Surface and is neutral;
(2) steel wire is put into electroplating bath and carried out copper facing;
(3) after copper facing was completed, the residue of clean surface carried out drying to Steel Wire Surface;
(4) with steel wire compression moulding, the cut-out of roughness 〉=25 μ m, namely get the surface irregularity type steel fibers;
In step (2), electroplating current is 230～270A, and voltage is 1.5～2.5V, and the pH value of electroplate liquid is 8.5～9.0, and the concentration of copper sulfate in electroplate liquid is 200 ± 10g/L, and electroplating time is 15～20s.
2. the preparation method of surface irregularity type steel fibers as claimed in claim 1, is characterized in that, in step (2), electroplating temperature is 40 ± 2 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210087952 CN102603221B (en) | 2012-03-29 | 2012-03-29 | Preparation method of steel fiber with rough surface |
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| CN 201210087952 CN102603221B (en) | 2012-03-29 | 2012-03-29 | Preparation method of steel fiber with rough surface |
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| CN102603221B true CN102603221B (en) | 2013-11-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103787603A (en) * | 2012-11-02 | 2014-05-14 | 苏州科技学院 | Corrosion protection method of steel fibers |
| CN111039624A (en) * | 2019-12-25 | 2020-04-21 | 泸州临港思源混凝土有限公司 | Recycled concrete and preparation method thereof |
| CN110818366B (en) * | 2019-12-25 | 2021-08-17 | 泸州临港思源混凝土有限公司 | Fair-faced concrete and preparation process thereof |
| CN113354369B (en) * | 2021-07-23 | 2022-07-12 | 成都志达商品混凝土厂 | High-strength recycled concrete and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531488A (en) * | 2009-04-22 | 2009-09-16 | 朱世忠 | Concrete with high toughness |
| CN201520723U (en) * | 2009-10-14 | 2010-07-07 | 江苏博特新材料有限公司 | Wave micro steel fiber |
| CN201738498U (en) * | 2010-05-13 | 2011-02-09 | 陈建清 | Undulated coppering steel fiber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531488A (en) * | 2009-04-22 | 2009-09-16 | 朱世忠 | Concrete with high toughness |
| CN201520723U (en) * | 2009-10-14 | 2010-07-07 | 江苏博特新材料有限公司 | Wave micro steel fiber |
| CN201738498U (en) * | 2010-05-13 | 2011-02-09 | 陈建清 | Undulated coppering steel fiber |
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Address after: No.6 shuiyougang, Gulou District, Nanjing City, Jiangsu Province 210013 Patentee after: JIANGSU SUBOTE NEW MATERIALS Co.,Ltd. Address before: 211103, No. 59 West Wan An Road, Jiangning District, Jiangsu, Nanjing Patentee before: JIANGSU SUBOTE NEW MATERIALS Co.,Ltd. |