CN104060767A - Method of industrially preparing steel-continuous-fiber composite bar - Google Patents
Method of industrially preparing steel-continuous-fiber composite bar Download PDFInfo
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- CN104060767A CN104060767A CN201410274561.0A CN201410274561A CN104060767A CN 104060767 A CN104060767 A CN 104060767A CN 201410274561 A CN201410274561 A CN 201410274561A CN 104060767 A CN104060767 A CN 104060767A
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Abstract
The invention discloses a method of industrially preparing a steel-continuous-fiber composite bar. The method comprises the following steps: sequentially compounding rough fiber yarns and fiber yarn bundles dipped with resin on the surface of a reinforcing steel bar to form the fiber compound bar. The fiber compound bar compounded by the process has a reasonable structure and the fiber yarn bundles used as an enhancing material are fully dipped with resin, so that the inner and outer interfaces have good adhesive performance to effectively satisfy the design strength of the reinforced concrete structure. Meanwhile, the bar further can overcome the deficiencies of high brittleness and high price of existing fiber reinforced plastic (FRP) and is good in actual using effect.
Description
Technical field
The present invention is the method for preparation of industrialization steel-continuous fiber composite reinforcing, and the manufacture craft of the composite reinforcing reinforcing material that is specifically related to use in reinforced concrete structure, belongs to field of compound material.
Background technology
Reinforced concrete structure (reinforced concrete structure) is a kind of structure by reinforcing bar and concrete constructions, reinforcing bar bearing tension, concrete bears pressure, have firm, durable, fireproof performance is good, save steel and low cost and other advantages than steel work, also be a kind of construction more common in current construction work, be used for various super-high buildings, longspan structure, as the load structure such as bridge, tunnel.In its structure, reinforcing bar is as basic reinforcing material, its combination property is stronger, but there is the shortcomings such as easily corrosion, based on this situation, in recent years, fibre reinforced composites (FRP) are because the characteristic of its high-strength light is used widely gradually, for example, patent documentation CN1936206A(steel-continuous-fiber composite-rib reinforced concrete earthquake-resisting structure) a kind of earthquake resistant structure that uses these fibre reinforced composites (FRP) and concrete binding to form disclosed, but in the time that reality is used, these fibre reinforced composites (FRP) but also exist material fragility strong, the defects such as price height, for this reason, Chinese scholars propose with different fibers mix or fibers encapsulation reinforcing bar to obtain combination property excellent, the advanced composite material (ACM) reinforcing rib that price is low, but at present, research to steel-continuous fiber composite reinforcing (SFCB) is at home and abroad scarcely out of swaddling-clothes, there is no ripe product, certainly, its production technology does not have regularization yet.
Summary of the invention
The object of the present invention is to provide the method for preparation of industrialization steel-continuous fiber composite reinforcing, adopt indented bars as inner core, use successively fiber roving and silvalin bundle to be composited, there is rational structural texture, and the silvalin Shu Caiyong resin using as reinforcing material fully floods, in it, outer boundary all has good adhesive property, can effectively be satisfied with the design strength of reinforced concrete structure, simultaneously, can also overcome existing fibre reinforced composites (FRP) and have the defects such as material fragility is strong, price is high, practical effect is good.
The present invention is achieved through the following technical solutions: the method for preparation of industrialization steel-continuous fiber composite reinforcing, this fibre composite reinforcement has overcome existing fibre reinforced composites (FRP) and has had the defects such as material fragility is strong, price is high, there is stronger combination property, and cheap, in the present invention, the method is the manufacture craft that is compounded in rebar surface and forms fibre composite reinforcement being impregnated with the fiber roving of resin and silvalin Shu Yici, comprises the following steps:
(1) inner core processing: select indented bars as reinforcing bar inner core, adopt sander to remove the monosymmetric longitudinal michinaga rib of this indented bars, make twisted steel material, and use wipes of alcohol wash clean;
(2) hoop Filament-wound Machine: the twisted steel material that adopts fiber roving to make step (1) carries out hoop winding;
(3) row's yarn: the reinforcing bar material that step (2) is made is placed on row's yarn seat, the silvalin bundle that is impregnated with resin is evenly arranged in to the outside of reinforcing bar inner core through arranging yarn device;
(4) curing molding: use draw-gear, the reinforcing bar inner core that above-mentioned steps (3) is made is sent into pulltrusion device and curing oven successively, completes the compound of fibre composite reinforcement.
The present invention is applicable to the industry preparation that diameter is the indented bars of 8～12mm, and therefore, in the present invention, described reinforcing bar inner core adopts the indented bars that diameter is 8～12mm.
To better implement the present invention, on described fiber roving, be coated with and be brushed with resin, described fiber roving carries out hoop winding along the space between twisted steel material salient rib, can be used for filling up the gap between indented bars screw thread, simultaneously, can, in the time that reinforcing bar inner core becomes composite reinforcing with silvalin Shu Fuhe pultrusion, strengthen adhesive property and globality between indented bars and silvalin bundle (longitudinal fiber).
In theory, the fiber roving that this hoop is wound around, in the time of fibre composite reinforcement axially loaded, does not play a role substantially, therefore can adopt continuous fiber cheaply, that is: described fiber roving is basalt fibre or glass fiber.
The dipping method of described silvalin bundle comprises: silvalin bundle is arranged on creel with the form of spindle, the row's of employing creel is introduced the silvalin bundle on spindle to be loaded with in the dipping tank of resin again, after silvalin bundle dipping is abundant, the row's of re-using yarn device is evenly arranged in this silvalin bundle in the outside of reinforcing bar inner core, in the present invention, the dipping of silvalin bundle adopts the method for straight trough dipping, simple to operate, quick.
Further, on described creel, the magnitude setting of spindle is 20～40 orders.
In the present invention, described silvalin bundle is basalt yarn bundle or carbon fiber yarn bundle.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the fibre composite reinforcement structure the present invention relates to is reasonable in design, mainly be composited by indented bars, fiber roving and silvalin bundle, and the fiber roving and the silvalin bundle that use as reinforcing material all adopt resin fully to flood, can not only effectively be satisfied with the design strength of reinforced concrete structure, simultaneously, can also overcome existing fibre reinforced composites (FRP) and have the defects such as material fragility is strong, price is high, there is stronger combination property, and cheap, suitablely extensively promote the use of.
(2) the present invention adopts basalt fibre or glass fiber to carry out hoop winding as fiber roving, in theory, the fiber roving that this hoop is wound around, in the time of fibre composite reinforcement axially loaded, does not play a role substantially, therefore can adopt continuous fiber cheaply, cost of production is very cheap.
(3) the present invention is before using fiber roving double thread reinforcing bar inner core to be wound around, also need to carry out sanding operation, mainly due to the existing indented bars both sides of buying on the market all with longitudinal michinaga rib of symmetry, tend to cause the fibre composite reinforcement cross section ovalize structure being composited, for this reason, also need to adopt sander to remove it, simple to operate, quick.
Detailed description of the invention
Below goal of the invention of the present invention, technical scheme and beneficial effect are described in further detail.
Should be noted that, it is all exemplary below describing in detail, be intended for the requested to provide further explanation of the invention, except as otherwise noted, all technology used herein and scientific terminology have the identical meanings of conventionally understanding with general technical staff of the technical field of the invention.
Reinforcing bar is widely used reinforcing material in current reinforced concrete structure (reinforced concrete structure), should possess stronger combination property, but there is the defects such as material fragility is strong, price is high based on existing fibre reinforced composites (FRP), the present invention proposes a kind of method of preparation of industrialization steel-continuous fiber composite reinforcing, this fibre composite reinforcement not only has stronger combination property, and its price is also very cheap.The fibre composite reinforcement the present invention relates to is mainly composited by indented bars, fiber roving and silvalin bundle, there is rational structural texture, and the fiber roving and the silvalin bundle that use as reinforcing material all adopt resin fully to flood, can not only effectively be satisfied with the design strength of reinforced concrete structure, simultaneously, can also overcome existing fibre reinforced composites (FRP) and have the defects such as material fragility is strong, price is high, there is stronger combination property, and cheap, suitablely extensively promote the use of.
Below further describing fibre composite reinforcement of the present invention:
The fibre composite reinforcement the present invention relates to includes following three parts:
A: reinforcing bar inner core: the indented bars that selection diameter is 8～12mm is as reinforcing bar inner core;
B: fiber roving: hoop is wound in the thread pitch of indented bars, in theory, the fiber roving that this hoop is wound around, in the time of fibre composite reinforcement axially loaded, does not play a role, substantially therefore can adopt continuous fiber cheaply, that is: basalt fibre or glass fiber.
C: silvalin bundle: be longitudinally evenly arranged in the outside of reinforcing bar inner core, can select basalt yarn bundle or carbon fiber yarn bundle.
In said structure, fiber roving and silvalin Shu Shangjun are impregnated with resin, in actual fabrication process, can in mixed with resin device, complete the abundant dipping of resin, to reach the working design intensity of reinforced concrete structure, it is very reasonable to design, wherein, resin can be selected epoxy resin, as: Atlac430 epoxy bisphenol-A vinylite.
Enumerate explanation the specific embodiment of the present invention with an exemplary embodiments below, certainly, protection scope of the present invention is not limited to following examples.
This method is the industrial production process of fibre composite reinforcement, is the manufacture craft that is compounded in rebar surface and forms fibre composite reinforcement being impregnated with the fiber roving of resin and silvalin Shu Yici, and in the present embodiment, its preparation method specifically comprises the following steps:
(1) inner core processing: select the indented bars (as: HRB400 type indented bars) of 10mm diameter as reinforcing bar inner core, adopt sander to remove the monosymmetric longitudinal michinaga rib of this indented bars, make twisted steel material, and use wipes of alcohol wash clean, the key property of HRB400 type indented bars is as shown in table 1:
Table 1
| Reinforcing bar type | Model | Yield strength (MPa) | Modulus of elasticity (Gpa) | Weight (kg/m) | Diameter (mm) |
| Indented bars | HRB400 | 420 | 200 | 0.617 | 10 |
(2) hoop Filament-wound Machine: select Atlac430 epoxy bisphenol-A vinylite as brushing resin, basalt fibre is brushed, and then the basalt fibre that painting is brushed with to resin is wound around along the space hoop between twisted steel material salient rib, wherein, the material property of Atlac430 epoxy bisphenol-A vinylite is as shown in table 2:
Table 2
| Resin | Tensile strength (MPa) | Stretch modulus (Gpa) | Fracture elongation (%) | Density (g/m 3） |
| Atlac430 | 95 | 3.6 | 6.1 | 1.06 |
(3) impregnation of fibers yarn bundle: carbon fiber yarn bundle is arranged on creel with the form of spindle, then the row's of employing creel introduces carbon fiber yarn bundle on spindle to be loaded with in the dipping tank of resin, carbon fiber yarn bundle can be selected the carbon fiber yarn bundle of 12k, and spindle is set as 40 orders
(4) row's yarn: after silvalin bundle dipping is abundant, the row's of re-using yarn device is evenly arranged in this silvalin bundle in the outside of reinforcing bar inner core, in the present embodiment, the dipping of carbon fiber yarn bundle adopts the method for straight trough dipping, simple to operate, quick.
(5) curing molding: use draw-gear, the reinforcing bar inner core that above-mentioned steps (4) is made is sent into pulltrusion device and isothermal curing stove successively, completes the compound of fibre composite reinforcement.
The fibre composite reinforcement making is tested, and its mechanical characteristic is as shown in table 3:
Table 3
| Diameter (mm) | Play mould (Gpa) | Intensity (MPa) |
| 12 | 152 | 588 |
The fibre composite reinforcement that the present embodiment is made and plain bars and fibre reinforced composites (FRP) carry out comprehensive comparison, as shown in table 4:
Table 4
| Tested object | Intensity | Play mould | Ductility | Weight | Price | Corrosion resistance |
| Reinforcing bar | Low | High | Good | Heavy | Low | Poor |
| FRP | High | Lower than reinforcing bar | Low | Gently | High | Better |
| The present embodiment | Higher | Higher | Good | Lighter | Lower | Better |
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, and any simple modification, equivalent variations that every foundation technical spirit of the present invention is done above embodiment, within all falling into protection scope of the present invention.
Claims (7)
1. the method for preparation of industrialization steel-continuous fiber composite reinforcing, is characterized in that: the method is the manufacture craft that is compounded in rebar surface and forms fibre composite reinforcement being impregnated with the fiber roving of resin and silvalin Shu Yici, comprises the following steps:
(1) inner core processing: select indented bars as reinforcing bar inner core, adopt sander to remove the monosymmetric longitudinal michinaga rib of this indented bars, make twisted steel material, and use wipes of alcohol wash clean;
(2) hoop Filament-wound Machine: the twisted steel material that adopts fiber roving to make step (1) carries out hoop winding;
(3) row's yarn: the reinforcing bar material that step (2) is made is placed on row's yarn seat, the silvalin bundle that is impregnated with resin is evenly arranged in to the outside of reinforcing bar inner core through arranging yarn device;
(4) curing molding: use draw-gear, the reinforcing bar inner core that above-mentioned steps (3) is made is sent into pulltrusion device and curing oven successively, completes the compound of fibre composite reinforcement.
2. the method for preparation of industrialization steel-continuous fiber composite reinforcing according to claim 1, is characterized in that: described reinforcing bar inner core adopts the indented bars that diameter is 8～12mm.
3. the method for preparation of industrialization steel-continuous fiber composite reinforcing according to claim 1, is characterized in that: described fiber roving carries out hoop winding along the space between twisted steel material salient rib.
4. the method for preparation of industrialization steel-continuous fiber composite reinforcing according to claim 1, is characterized in that: described fiber roving is basalt fibre or glass fiber.
5. the method for preparation of industrialization steel-continuous fiber composite reinforcing according to claim 1, it is characterized in that: the dipping method of described silvalin bundle comprises: silvalin bundle is arranged on creel with the form of spindle, the row's of employing creel is introduced the silvalin bundle on spindle to be loaded with in the dipping tank of resin again, after silvalin bundle dipping is abundant, the row's of re-using yarn device is evenly arranged in this silvalin bundle in the outside of reinforcing bar inner core.
6. the method for preparation of industrialization steel-continuous fiber composite reinforcing according to claim 5, is characterized in that: on described creel, the magnitude setting of spindle is 20～40 orders.
7. the method for preparation of industrialization steel-continuous fiber composite reinforcing according to claim 1, is characterized in that: described silvalin bundle is basalt yarn bundle or carbon fiber yarn bundle.
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| CN106498974A (en) * | 2016-12-27 | 2017-03-15 | 国网江苏省电力公司经济技术研究院 | A kind of assembling type base and its installation method for power transmission tower |
| CN106827589A (en) * | 2017-01-22 | 2017-06-13 | 北京工业大学 | A kind of preparation technology of the FRP section bars arch of embedded shaped steel |
| CN107160715A (en) * | 2017-05-25 | 2017-09-15 | 江苏海川新材料科技有限公司 | A kind of glass fiber-reinforced polymer production technology |
| CN107217786A (en) * | 2017-05-05 | 2017-09-29 | 广东工业大学 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
| CN110079055A (en) * | 2019-04-10 | 2019-08-02 | 鞍钢建设集团有限公司 | A kind of combined type Side fascia environment-friendly and energy-efficient connector and its production method |
| CN110539505A (en) * | 2019-09-19 | 2019-12-06 | 中国人民解放军陆军工程大学 | Preparation method of SFCB (Small form-factor pluggable) rib |
| CN112593658A (en) * | 2020-12-17 | 2021-04-02 | 广东工业大学 | Steel-FRP (fiber reinforced plastic) composite bar seawater sea sand concrete beam, design method and preparation method |
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| CN110079055A (en) * | 2019-04-10 | 2019-08-02 | 鞍钢建设集团有限公司 | A kind of combined type Side fascia environment-friendly and energy-efficient connector and its production method |
| CN110539505A (en) * | 2019-09-19 | 2019-12-06 | 中国人民解放军陆军工程大学 | Preparation method of SFCB (Small form-factor pluggable) rib |
| CN112593658A (en) * | 2020-12-17 | 2021-04-02 | 广东工业大学 | Steel-FRP (fiber reinforced plastic) composite bar seawater sea sand concrete beam, design method and preparation method |
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Application publication date: 20140924 |