CN106400030B - A kind of protecting reinforced concrete cathode device and method of CFRP anodes - Google Patents
A kind of protecting reinforced concrete cathode device and method of CFRP anodes Download PDFInfo
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- CN106400030B CN106400030B CN201610950990.4A CN201610950990A CN106400030B CN 106400030 B CN106400030 B CN 106400030B CN 201610950990 A CN201610950990 A CN 201610950990A CN 106400030 B CN106400030 B CN 106400030B
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- Prior art keywords
- cfrp
- reinforcing bar
- cathode
- anodes
- reinforced concrete
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/16—Electrodes characterised by the combination of the structure and the material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2201/00—Type of materials to be protected by cathodic protection
- C23F2201/02—Concrete, e.g. reinforced
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a kind of protecting reinforced concrete cathode device and method of CFRP anodes.Complex root reinforcing bar, DC power supply and the CFRP anodes that the protecting reinforced concrete cathode device of CFRP anodes includes concrete, is embedded in concrete; the CFRP anodes are the CFRP pipes being sleeved on outside reinforcing bar, and conductive adhesive linkage is filled in the gap between CFRP pipes and reinforcing bar；Complex root CFRP pipe parallel connections are followed by DC power anode, and complex root bar parallel is followed by the cathode of DC power supply.The armored concrete of the present invention is combined using CFRP pipe reinforcing bars, and the combination of CFRP pipe reinforcing bars can be prefabricated, and construction is simple is convenient, is conveniently used for new building；The CFRP anodes that CFRP pipe reinforcing bars combine and the reinforcing bar as cathode are combined together by conductive adhesive linkage, and resistance is small, and energy consumption is low.
Description
[technical field]
The present invention relates to protecting reinforced concrete cathode more particularly to a kind of protecting reinforced concrete cathodes of CFRP anodes
Device and method.
[background technology]
Armored concrete is widely used in as a kind of structural material in the buildings such as bridge, house.However, coagulation
Soil is a kind of porosity material, when structure is in the adverse environments such as ocean, salt-soda soil, Frozen-thawed cycled, deicer salts, in environment
Hazardous medium can penetrate into rebar surface by the hole in concrete, react therewith, cause steel bar corrosion, lead to structure
Service life be far below projected life.In order to cope with steel bars corrosion problem, the measure of current, common steel bar corrosion protection has
Coating concrete surface impervious barrier is added using the good concrete of density, to reinforcing bar implementation electrochemical cathodic protection, rebar surface
Erosion resistant coating, using improved corrosion reinforcing bar etc..In these measures, electrochemical cathodic protection method can directly inhibit the electricity of reinforcing bar itself
Chemical corrosion process, it is considered to be one of most efficient method.
According to the difference of cathode current applying mode, electrochemical cathodic protection method can be divided into impressed current method and sacrifice
Anode process；Since impressed current method has the adjustable advantage of voltage and current, more favored by insider in Practical Project.
Since impressed current method is applied to reinforced concrete structure, people are dedicated to researching and developing anode system, constantly have new
Material is by development and application.Such as, (1) main anode block+conductive covering layer, (2) main anode silk+conducting polymer, (3) main anode silk
+ sprayed metal layer, (4) main anode silk+conductive coating (5) cable anode, (6) metal oxide titanium net anode and (7) baried type
Anode.Reinforced concrete structure is a kind of extremely complex heterogeneous system, and resistivity is high in concrete, is unevenly distributed, also by
The influence of environment and season.This just proposes higher requirement to selected anode system, and above several anode systems have
Applied to the example of reinforced concrete structure, but have respective limiting, wherein metal oxide titanium net anode is to exist now
Anode system the most successful, but its material expensive are applied in the reinforced concrete cathodic protection of hilllock, significantly increase engineering cost,
This is for being an obstacle for being difficult to avoid in its application in Practical Project.
Application No. is a kind of armored concrete being embedded in anode using CFRP of the disclosure of the invention of CN201310131212.9
Cathode protecting process and device, the method includes the steps：In the protection zone position groove is opened up by predetermined size；In steel
CFRP sheet materials are arranged in the protection zone surface of tendon concrete structure ontology, and the CFRP sheet materials include the ribbed stiffener being adapted to groove
And with the stiffener that is fixed on protection zone inner surface；Binding material is applied to the ribbed stiffener and concrete of the CFRP sheet materials
Between the side surface that groove is connected and stiffener and concrete, by ribbed stiffener and concrete groove and stiffener and concrete
Embedded connection.The device due to be embedded into concrete at stiffening rib structure using CFRP sheet material designs reduce CFRP sheet materials with
The distance between reinforcing bar reduces resistance between the two, to be conducive to the continuous uniform of protective current in concrete structure
Distribution, can reach better protecting effect.
But man-hour requirement secondary operation, construction trouble are applied in the invention；Since it is desired that secondary operation, anode material and coagulation
Adhesion strength between soil is difficult to ensure that the concertedness to work between anode material and concrete is bad；Anode material and cathode
Concrete thickness between material (reinforcing bar) is larger, and the resistance between cathode and anode is big, big energy-consuming.
[invention content]
Small, engineering that the technical problem to be solved in the present invention is to provide the resistance between a kind of easy for construction, cathode and anode
The protecting reinforced concrete cathode device of CFRP anodes at low cost.
Another of the invention technical problems to be solved are to provide the resistance between a kind of easy for construction, cathode and anode
It is small, engineering cost is low, be conveniently used for new building CFRP anodes protecting reinforced concrete cathode method.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is a kind of armored concrete of CFRP anodes
Cathode protection device, including concrete, the complex root reinforcing bar being embedded in concrete, DC power supply and CFRP anodes, it is described
CFRP anodes are the CFRP pipes being sleeved on outside reinforcing bar, and conductive adhesive linkage is filled in the gap between CFRP pipes and reinforcing bar；Plural number
Root CFRP pipe parallel connections are followed by DC power anode, and complex root bar parallel is followed by the cathode of DC power supply.
Above-described protecting reinforced concrete cathode device, conductive adhesive linkage include adhesives and are dispersed in bonding
Conductive particle in material.
Above-described protecting reinforced concrete cathode device, the adhesives are cement mortar or organic resin
Glue.
A kind of protecting reinforced concrete cathode method of CFRP anodes is used as reinforced concrete using the pipe-reinforced combinations of CFRP
Reinforcing bar in soil uses, and the pipe-reinforced combinations of CFRP include reinforcing bar, the CFRP pipes that are sleeved on outside reinforcing bar and are filled in CFRP and manage and steel
The conductive adhesive linkage in gap between muscle；And the CFRP pipes of the pipe-reinforced aggregate surfaces of CFRP are connect into DC power supply as anode
Anode connects the cathode of DC power supply using the reinforcing bar inner core of the pipe-reinforced combinations of CFRP as cathode.
Above-described protecting reinforced concrete cathode method, conductive adhesive linkage include adhesives and are dispersed in bonding
Conductive particle in material.
Above-described protecting reinforced concrete cathode method, the adhesives are cement mortar or organic resin
Glue.
Above-described protecting reinforced concrete cathode method, the pipe-reinforced combinations of CFRP make according to the following steps：
701) reinforcing bar is decontaminated, grinding process；
702) adhesives for containing conductive particle in the rebar surface brushing handled well, and the steel that adhesives will be coated
Muscle is inserted into CFRP pipes, by binding material by CFRP pipes and reinforcing bar in conjunction with integral；Or the reinforcing bar handled well is inserted into CFRP
In pipe, the adhesives containing conductive particle is poured into, with the gap between adhesives filling CFRP pipes and regular reinforcement, is allowed to
In conjunction with integral.
The armored concrete of the present invention uses the pipe-reinforced combinations of CFRP, and the pipe-reinforced combinations of CFRP can be prefabricated, construction letter
Folk prescription just, is conveniently used for new building；The CFRP anodes of the pipe-reinforced combinations of CFRP and reinforcing bar as cathode pass through conductive viscous
It connects layer to be combined together, resistance is small, and energy consumption is low.
[description of the drawings]
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram in the protecting reinforced concrete cathode device vertical section of CFRP anodes of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram in the protecting reinforced concrete cathode device cross section of CFRP anodes of the embodiment of the present invention.
[specific implementation mode]
The structure of the protecting reinforced concrete cathode device of CFRP anodes of the embodiment of the present invention is as depicted in figs. 1 and 2, including
Concrete and the more pipe-reinforced combinations of CFRP being embedded in concrete 3, the pipe-reinforced combinations of CFRP include the reinforcing bar as inner core
1, the CFRP pipes 2 that are sleeved on outside reinforcing bar and the conductive adhesive linkage 4 for being filled in gap between CFRP pipes 2 and reinforcing bar 1.Outside reinforcing bar 1
2 parallel connection of CFRP pipes in face is followed by the anode of DC power supply B, and the cathode of DC power supply B is followed by as 1 parallel connection of reinforcing bar of inner core.
Conductive adhesive linkage includes adhesives and the conductive particle that is dispersed in adhesives.In the present embodiment, it glues
It is cement mortar or organic resin glue to connect material, and organic resin glue can be epoxy resin, vinylite or polyester resin.It leads
Electric particle can be short carbon fiber or other conductive materials.Conductive short carbon fiber, which is added, to bond material with reinforced cement mortar
After cement mortar configures suitable staple fiber is added, and stir evenly in the electric conductivity of material.
The manufacturing process of the pipe-reinforced combinations of CFRP is as follows：Reinforcing bar is decontaminated first, pretreatment of polishing, is being handled well
Rebar surface brushing contain the adhesives of conductive particle, and the reinforcing bar for coating adhesives is inserted into CFRP pipes, is passed through
Binding material combines CFRP pipes and reinforcing bar integral.The reinforcing bar handled well can also be inserted into CFRP pipes, be poured into containing leading
The adhesives of electric particle is allowed to combine integral with the gap between adhesives filling CFRP pipes and regular reinforcement.
In structure casting concrete (or element precast), by structure be electrically connected using the CFRP pipes outside reinforcing bar
It connects, and is connect with DC power cathode；By be electrically connected with regular reinforcement, and be connected with the cathode of DC power supply B.It is powered
Afterwards, charge (electronics) flows to the regular reinforcement (cathode electrode) in CFRP pipes by DC power supply by conducting wire, keeps regular reinforcement cloudy
Pole is polarized, and the oxidation reaction of reinforcing bar inner core is inhibited；Under electric field action, Cl-Away from the direction movement of regular reinforcement, reduce
Cl around regular reinforcement-Concentration provides protective effect to regular reinforcement.
In the cathode protecting process of above example of the present invention, the CFRP pipes being electrically connected with DC power anode not only may be used
To serve as anode system in circuit, meanwhile, CFRP pipes are combined into an entirety by binding material and regular reinforcement, in concrete
Participate in stress in structure jointly with reinforcing bar, a material is multi-purpose, reduces the usage amount of reinforcing bar, reduces engineering cost.Due to circuit
It is middle to be combined closely by inorganic cementitious material as the CFRP pipes of anode system and as between the regular reinforcement of cathod system
Together, distance is smaller between the two, reduces the resistance between cathode and anode, can reach better protecting effect.It is this
Anode system can be used for the newly-built reinforced concrete structure in erosion environment, first by CFRP pipe sleeves outside regular reinforcement,
Then it is directly installed in structure during concreting (element precast), is not necessarily to secondary operation, it is easy for construction.
Compared with prior art, beneficial effects of the present invention are embodied in：
1, easy for construction：Compared with previous anode system, the pipe-reinforced combined anode systems of CFRP proposed by the present invention are in work
There is fairly obvious advantage in journey construction.Especially when applied to cathodic protection in newly-built reinforced concrete structure, such as
For the newly-built reinforced concrete structure in erosion environment, (pre-buried) can be mounted directly before casting concrete in structure
On, it is not necessarily to secondary operation, it is easy for construction, greatly reduce construction volume.
2, the utilization rate of material is improved：In cathode protecting process proposed by the present invention, anode system is served as in circuit
CFRP pipes itself can reduce the usage amount of reinforcing bar with regular reinforcement cooperatively stress, it is multi-purpose to realize a material.
3, there is apparent economic benefit：The CFRP pipes as anode system and protected regular reinforcement due to the present apparatus
Inner core is closely linked (between the two only between alternating floor binding material), reduces resistance between the two, improves simultaneously
The stability of circuit, thus in use electric energy expend it is few.
Claims (7)
1. a kind of protecting reinforced concrete cathode device of CFRP anodes, including concrete, the complex root steel that is embedded in concrete
Muscle, DC power supply and CFRP anodes, which is characterized in that the CFRP anodes are the CFRP pipes being sleeved on outside reinforcing bar, CFRP pipes
Conductive adhesive linkage is filled in gap between reinforcing bar；Complex root CFRP pipe parallel connections are followed by DC power anode, complex root steel
Muscle parallel connection is followed by the cathode of DC power supply.
2. protecting reinforced concrete cathode device according to claim 1, which is characterized in that conductive adhesive linkage includes viscous
The conductive particle for connecing material and being dispersed in adhesives.
3. protecting reinforced concrete cathode device according to claim 1, which is characterized in that the adhesives is water
Cement mortar or organic resin glue.
4. a kind of protecting reinforced concrete cathode method of CFRP anodes, which is characterized in that use the pipe-reinforced combination conducts of CFRP
Reinforcing bar in armored concrete uses, and the pipe-reinforced combinations of CFRP include reinforcing bar, the CFRP that is sleeved on outside reinforcing bar is managed and is filled in
CFRP manages the conductive adhesive linkage in the gap between reinforcing bar；And the CFRP pipes of the pipe-reinforced aggregate surfaces of CFRP are connect as anode
The anode of DC power supply connects the cathode of DC power supply using the reinforcing bar inner core of the pipe-reinforced combinations of CFRP as cathode.
5. protecting reinforced concrete cathode method according to claim 4, which is characterized in that conductive adhesive linkage includes viscous
The conductive particle for connecing material and being dispersed in adhesives.
6. protecting reinforced concrete cathode method according to claim 5, which is characterized in that the adhesives is water
Cement mortar or organic resin glue.
7. protecting reinforced concrete cathode method according to claim 4, which is characterized in that the pipe-reinforced combinations of CFRP are pressed
Following steps make：
A) reinforcing bar is decontaminated, grinding process；
B) adhesives for containing conductive particle in the rebar surface brushing handled well, and the reinforcing bar for coating adhesives is inserted into
In CFRP pipes, by binding material by CFRP pipes and reinforcing bar in conjunction with integral；Or the reinforcing bar handled well is inserted into CFRP pipes, it fills
Enter the adhesives containing conductive particle, with the gap between adhesives filling CFRP pipes and regular reinforcement, is allowed to be combined into
It is whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950990.4A CN106400030B (en) | 2016-10-26 | 2016-10-26 | A kind of protecting reinforced concrete cathode device and method of CFRP anodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950990.4A CN106400030B (en) | 2016-10-26 | 2016-10-26 | A kind of protecting reinforced concrete cathode device and method of CFRP anodes |
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| Publication Number | Publication Date |
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| CN106400030A CN106400030A (en) | 2017-02-15 |
| CN106400030B true CN106400030B (en) | 2018-08-31 |
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| CN114016038B (en) * | 2021-10-28 | 2023-08-29 | 郑州大学 | CFRP-steel combined cable structure and electrochemical corrosion prevention method using rainwater for conduction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077232A (en) * | 1992-03-23 | 1993-10-13 | 约翰·B·米勒 | The method of passivation reinforcing bar in carbonization and/or chloride contaminated concrete |
| CN1867700A (en) * | 2003-10-10 | 2006-11-22 | 戴维·惠特莫尔 | Cathodic protection of steel within a covering material |
| CN206143311U (en) * | 2016-10-26 | 2017-05-03 | 深圳大学 | CFRP anodal reinforced concrete cathode protection device |
-
2016
- 2016-10-26 CN CN201610950990.4A patent/CN106400030B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077232A (en) * | 1992-03-23 | 1993-10-13 | 约翰·B·米勒 | The method of passivation reinforcing bar in carbonization and/or chloride contaminated concrete |
| CN1867700A (en) * | 2003-10-10 | 2006-11-22 | 戴维·惠特莫尔 | Cathodic protection of steel within a covering material |
| CN206143311U (en) * | 2016-10-26 | 2017-05-03 | 深圳大学 | CFRP anodal reinforced concrete cathode protection device |
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| CN106400030A (en) | 2017-02-15 |
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