CN106400030A - CFRP anode reinforced concrete cathode protection device and method - Google Patents
CFRP anode reinforced concrete cathode protection device and method Download PDFInfo
- Publication number
- CN106400030A CN106400030A CN201610950990.4A CN201610950990A CN106400030A CN 106400030 A CN106400030 A CN 106400030A CN 201610950990 A CN201610950990 A CN 201610950990A CN 106400030 A CN106400030 A CN 106400030A
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- Prior art keywords
- cfrp
- pipe
- reinforcing bar
- anode
- 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 CFRP anode reinforced concrete cathode protection device and method. The CFRP anode reinforced concrete cathode protection device comprises concrete, a plurality of rebars buried in the concrete, a direct current power supply and CFRP anodes. The CFRP anodes are CFRP tubes arranged outside the rebars in a sleeving mode. Gaps between the CFRP tubes and the rebars are filled with conductive bonding layers. The multiple CFRP tubes are connected in parallel and then connected with the positive electrode of the direct current power supply. The multiple rebars are connected in parallel and then connected with the negative electrode of the direct current power supply. Reinforced concrete adopts a CFRP tube-rebar combination, the CFRP tube-rebar combination can be prefabricated, construction is easy and convenient, and the device can be used for new buildings conveniently; and the CFRP anode of the CFRP tube-rebar combination and the rebars used as the cathode are combined through the conductive bonding layers, so that resistant is low, and the 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 cathode of CFRP anode
Apparatus and method.
[background technology]
Armored concrete, as a kind of structural material, is widely used in the buildings such as bridge, house.However, coagulation
Soil is a kind of porosity material, at structure during the adverse environment such as Yu Haiyang, salt-soda soil, freeze-thaw cycle, 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 tackle steel bar corrosion problem, the measure of current, conventional steel bar corrosion protection has
Coating concrete surface impervious barrier, implement electrochemical cathodic protection, rebar surface using the good concrete of density, to reinforcing bar and add
Anticorrosive coat, application improved corrosion reinforcing bar etc..In these measures, electrochemical cathodic protection method can directly suppress the electricity of reinforcing bar itself
Chemical corrosion process is 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；Because impressed current method has the adjustable advantage of voltage x current, more favored by insider in Practical Project.
Since impressed current method is applied to reinforced concrete structure, people are devoted to researching and developing anode system, constantly have new
Material is developed and applies.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 in concrete, resistivity is high, and skewness is also subject to
Environment and the impact in season.This just proposes higher requirement to selected anode system, and above several anode systems all have
It is applied to the example of reinforced concrete structure, but has respective limiting, wherein, metal-oxide titanium net anode is to exist now
The most successful anode system is applied in the reinforced concrete cathodic protection of hilllock, but its material expensive, significantly increase engineering cost,
This is an obstacle being difficult to avoid for it in the application in Practical Project.
A kind of employing CFRP of the disclosure of the invention of Application No. CN201310131212.9 embeds the armored concrete of anode
Cathode protecting process and device, methods described includes step：Open up groove in described protection zone position by given size；In steel
The protection zone surface setting CFRP sheet material of tendon concrete structure body, described CFRP sheet material includes the ribbed stiffener being adapted to groove
And be fixed on the stiffener of protection zone inner surface；Binding material is applied to ribbed stiffener and the concrete of described CFRP sheet material
Between side surface that groove is connected and stiffener and concrete, by ribbed stiffener and concrete groove and stiffener and concrete
Embedded connection.This device due to become stiffening rib structure to be embedded in concrete using CFRP sheet material design to reduce CFRP sheet material with
The distance between reinforcing bar, reduces resistance between the two, thus being conducive to the continuous uniform of protective current in xoncrete structure
Distribution, can reach more preferable protected effect.
But man-hour requirement secondary operation, construction trouble are applied in this invention；Since it is desired that secondary operations, anode material and coagulation
Adhesion strength between soil is difficult to ensure that, the concertedness working between anode material and concrete is bad；Anode material and negative electrode
Concrete thickness between material (reinforcing bar) is larger, and the resistance between negative electrode and anode is big, big energy-consuming.
[content of the invention]
The technical problem to be solved in the present invention is to provide that the resistance between a kind of easy construction, negative electrode and anode is little, engineering
The protecting reinforced concrete cathode device of the CFRP anode of low cost.
Another technical problem to be solved of the present invention is the resistance providing between a kind of easy construction, negative electrode and anode
Little, engineering cost is low, be conveniently used for new building CFRP anode protecting reinforced concrete cathode method.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is, a kind of armored concrete of CFRP anode
Cathode protection device, including concrete, the complex root reinforcing bar, DC source and the CFRP anode that are embedded in concrete, described
CFRP anode is the CFRP pipe being enclosed within outside reinforcing bar, fills the adhesive linkage of conduction in the gap between CFRP pipe and reinforcing bar；Plural number
Root CFRP pipe parallel connection is followed by DC power anode, and complex root bar parallel is followed by the negative pole of DC source.
Above-described protecting reinforced concrete cathode device, conductive adhesive linkage includes adhesivess and is dispersed in bonding
Conductive particle in material.
Above-described protecting reinforced concrete cathode device, described adhesivess are cement mortar or organic resin
Glue.
A kind of protecting reinforced concrete cathode method of CFRP anode, using the pipe-reinforced combination of CFRP as reinforced concrete
Reinforcing bar in soil uses, and the pipe-reinforced combination of CFRP includes reinforcing bar, is enclosed within the CFRP pipe outside reinforcing bar and is filled in CFRP pipe and steel
The adhesive linkage of the conduction in gap between muscle；And the CFRP pipe of pipe-reinforced for CFRP aggregate surface is connect DC source as anode
Positive pole, the reinforcing bar inner core of pipe-reinforced for CFRP combination is connect the negative pole of DC source as negative electrode.
Above-described protecting reinforced concrete cathode method, conductive adhesive linkage includes adhesivess and is dispersed in bonding
Conductive particle in material.
Above-described protecting reinforced concrete cathode method, described adhesivess are cement mortar or organic resin
Glue.
Above-described protecting reinforced concrete cathode method, the pipe-reinforced combination of CFRP makes according to the following steps：
701) reinforcing bar is carried out decontaminating, grinding process；
702) adhesivess containing conductive particle in the rebar surface brushing handled well, and the steel of adhesivess will be coated
In muscle insertion CFRP pipe, by binding material, CFRP pipe and reinforcing bar are combined integral；Or the reinforcing bar handled well is inserted CFRP
In pipe, pour into the adhesivess containing conductive particle, fill the gap between CFRP pipe and regular reinforcement with adhesivess, be allowed to
In conjunction with integral.
The armored concrete of the present invention adopts the pipe-reinforced combination of CFRP, and the pipe-reinforced combination of CFRP can be prefabricated, construction letter
Folk prescription just, is conveniently used for new building；The CFRP anode of the pipe-reinforced combination of CFRP and the reinforcing bar as negative electrode pass through conductive gluing
Connect layer to be combined together, resistance is little, power consumption is low.
[brief description]
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation in the protecting reinforced concrete cathode device vertical section of embodiment of the present invention CFRP anode.
Fig. 2 is the structural representation in the protecting reinforced concrete cathode device cross section of embodiment of the present invention CFRP anode.
[specific embodiment]
The structure of the protecting reinforced concrete cathode device of embodiment of the present invention CFRP anode as depicted in figs. 1 and 2, including
Concrete and the pipe-reinforced combination of many CFRP being embedded in concrete 3, the pipe-reinforced combination of CFRP includes the reinforcing bar as inner core
1st, it is enclosed within the CFRP pipe 2 outside reinforcing bar and the adhesive linkage 4 being filled in the conduction in gap between CFRP pipe 2 and reinforcing bar 1.Outside reinforcing bar 1
CFRP pipe 2 parallel connection in face is followed by the positive pole of DC source B, and reinforcing bar 1 parallel connection as inner core is followed by the negative pole of DC source B.
Conductive adhesive linkage includes adhesivess and the conductive particle being dispersed in adhesivess.In the present embodiment, glue
Connecing material is cement mortar or organic resin glue, and organic resin glue can be epoxy resin, vinylite or polyester resin.Lead
Electric granule can be short carbon fiber or other conductive materials.The short carbon fiber adding conduction can be with reinforced cement mortar bonding material
The electric conductivity of material, after cement mortar configures, adds appropriate chopped fiber, and stirs.
The manufacturing process of the pipe-reinforced combination of CFRP is as follows：First reinforcing bar is carried out decontaminating, pretreatment of polishing, handling well
Rebar surface brushing contain the adhesivess of conductive particle, and will coat in the reinforcing bar insertion CFRP pipe of adhesivess, pass through
CFRP pipe and reinforcing bar are combined integral by binding material.Can also pour into containing leading in the reinforcing bar that handle well insertion CFRP pipe
The adhesivess of electric granule, fill the gap between CFRP pipe and regular reinforcement with adhesivess, are allowed to reference to integral.
In structure casting concrete (or element precast), by structure be electrically connected using the CFRP pipe outside reinforcing bar
Connect, and be connected with DC power cathode；Joined regular reinforcement is electrically connected, and is connected with the negative pole of DC source B.Energising
Afterwards, electric charge (electronics) is flowed to the regular reinforcement (cathode electrode) in CFRP pipe by DC source by wire, makes regular reinforcement cloudy
Polarize in pole, the oxidation reaction of suppression reinforcing bar inner core；Under electric field action, Cl-Direction away from regular reinforcement is moved, and reduces
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 pipe being electrically connected with DC power anode not only may be used
To serve as anode system in circuit, meanwhile, CFRP Gutron is crossed binding material and is combined into an entirety, in concrete with regular reinforcement
Jointly participate in stress with reinforcing bar in structure, a material is multiplex, decrease the usage amount of reinforcing bar, reduce engineering cost.Due to circuit
The middle CFRP as anode system is managed and is combined closely by inorganic cementitious material as between the regular reinforcement of cathod system
Together, distance is less between the two, reduces the resistance between negative electrode and anode, can reach more preferable protected effect.This
Anode system can be used for the newly-built reinforced concrete structure in erosion environment, first by CFRP pipe box outside regular reinforcement,
Then it is mounted directly in structure during concreting (element precast), without secondary operation, easy construction.
Compared with prior art, beneficial effects of the present invention are embodied in：
1st, easy construction：Compared with conventional anode system, the pipe-reinforced combined anode system of CFRP proposed by the present invention is in work
There is fairly obvious advantage in journey construction.Especially when the cathodic protection being applied 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, without secondary operation, easy construction, greatly reduce construction volume.
2nd, improve the utilization rate of material：In cathode protecting process proposed by the present invention, serve as anode system in circuit
CFRP pipe itself can decrease the usage amount of reinforcing bar it is achieved that a material is multiplex with regular reinforcement cooperatively stress.
3rd, there is obvious economic benefit：Because this device is managed and protected regular reinforcement as the CFRP of anode system
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, therefore in use electric energy expend few.
Claims (7)
1. a kind of protecting reinforced concrete cathode device of CFRP anode, including concrete, the complex root steel that is embedded in concrete
, it is characterised in that described CFRP anode is the CFRP pipe being enclosed within outside reinforcing bar, CFRP manages for muscle, DC source and CFRP anode
The adhesive linkage of conduction is filled in gap and reinforcing bar between；Complex root CFRP pipe parallel connection is followed by DC power anode, complex root steel
Muscle parallel connection is followed by the negative pole of DC source.
2. protecting reinforced concrete cathode device according to claim 1 is it is characterised in that the adhesive linkage of conduction includes gluing
Connect material and the conductive particle being dispersed in adhesivess.
3. protecting reinforced concrete cathode device according to claim 1 is it is characterised in that described adhesivess are water
Cement mortar or organic resin glue.
4. a kind of protecting reinforced concrete cathode method of CFRP anode is it is characterised in that adopt CFRP pipe-reinforced combination conduct
Reinforcing bar in armored concrete uses, and the pipe-reinforced combination of CFRP includes reinforcing bar, is enclosed within the CFRP pipe outside reinforcing bar and is filled in
The adhesive linkage of the conduction in gap between CFRP pipe and reinforcing bar；And the CFRP pipe of pipe-reinforced for CFRP aggregate surface is connect as anode
The positive pole of DC source, the reinforcing bar inner core of pipe-reinforced for CFRP combination is connect the negative pole of DC source as negative electrode.
5. protecting reinforced concrete cathode method according to claim 4 is it is characterised in that the adhesive linkage of conduction includes gluing
Connect material and the conductive particle being dispersed in adhesivess.
6. protecting reinforced concrete cathode method according to claim 5 is it is characterised in that described adhesivess are water
Cement mortar or organic resin glue.
7. protecting reinforced concrete cathode method according to claim 4 is it is characterised in that the pipe-reinforced combination of CFRP is pressed
Following steps make：
A) reinforcing bar is carried out decontaminating, grinding process；
B) adhesivess containing conductive particle in the rebar surface brushing handled well, and the reinforcing bar coating adhesivess is inserted
In CFRP pipe, by binding material, CFRP pipe and reinforcing bar are combined integral；Or by the reinforcing bar handled well insertion CFRP pipe, fill
Enter the adhesivess containing conductive particle, fill the gap between CFRP pipe and regular reinforcement with adhesivess, be allowed to be combined into
Overall.
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 true CN106400030A (en) | 2017-02-15 |
| CN106400030B CN106400030B (en) | 2018-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016038A (en) * | 2021-10-28 | 2022-02-08 | 郑州大学 | CFRP-steel combined cable structure and electrochemical corrosion prevention method utilizing rainwater to conduct electricity |
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 (4)
| 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 |
| JPH07232976A (en) * | 1992-03-23 | 1995-09-05 | John B Miller | Method for passivating steel material in 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016038A (en) * | 2021-10-28 | 2022-02-08 | 郑州大学 | CFRP-steel combined cable structure and electrochemical corrosion prevention method utilizing rainwater to conduct electricity |
| 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 |
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| Publication number | Publication date |
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| CN106400030B (en) | 2018-08-31 |
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