CN106283071B - A kind of protecting reinforced concrete cathode method and apparatus of CFRP anodes - Google Patents
A kind of protecting reinforced concrete cathode method and apparatus of CFRP anodes Download PDFInfo
- Publication number
- CN106283071B CN106283071B CN201610842340.8A CN201610842340A CN106283071B CN 106283071 B CN106283071 B CN 106283071B CN 201610842340 A CN201610842340 A CN 201610842340A CN 106283071 B CN106283071 B CN 106283071B
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- Prior art keywords
- cfrp
- cathode
- steel composite
- reinforced concrete
- anodes
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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
- C23F13/20—Conducting electric current to electrodes
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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
- C23F13/10—Electrodes characterised by the structure
-
- 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
Abstract
The invention discloses a kind of protecting reinforced concrete cathode method and apparatus of CFRP anodes.Complex root reinforcing bar, DC power supply and the CFRP anodes that protecting reinforced concrete cathode device includes concrete, is embedded in concrete; the CFRP anodes are the CFRP wrapping layers for being covered in rebar surface; CFRP wrapping layer parallel connections on complex root reinforcing bar 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 uses CFRP steel composite reinforcings, and CFRP steel composite reinforcing can be prefabricated, and construction is simple is convenient；The CFRP anodes of CFRP steel composite reinforcings and the reinforcing bar as cathode are closely linked, 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
Method and apparatus.
[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]
The technical problem to be solved in the present invention is to provide a kind of small CFRP of the resistance between easy for construction, cathode and anode
The protecting reinforced concrete cathode device of anode.
The resistance that another of the invention technical problems to be solved are to provide between a kind of easy for construction, cathode and anode is small
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 wrapping layers for being covered in rebar surface, and the CFRP wrapping layer parallel connections on complex root reinforcing bar are followed by DC power supply
Anode, complex root bar parallel are followed by the cathode of DC power supply.
Above-described protecting reinforced concrete cathode device, the axial direction point of carbon fiber in CFRP wrapping layers along reinforcing bar
Cloth.
A kind of protecting reinforced concrete cathode method of CFRP anodes, using CFRP- steel composite reinforcings as armored concrete
In reinforcing bar use, and connect using the CFRP wrapping layers of CFRP- steel composite reinforcing rebar surfaces as anode the anode of DC power supply, general
The reinforcing bar inner core of CFRP- steel composite reinforcings connects the cathode of DC power supply as cathode.
Above-described protecting reinforced concrete cathode method, the carbon fiber in the CFRP wrapping layers of CFRP- steel composite reinforcings
Along the axial direction distribution of CFRP- steel composite reinforcings.
Above-described protecting reinforced concrete cathode method, CFRP- steel composite reinforcings make according to the following steps：It will be continuous
Carbon fiber is drawn to the rebar surface as inner core, it is made to be uniformly distributed in an axial direction in rebar surface, is squeezed, is drawn by mold
The CFRP- steel composite reinforcings pull out, being formed by curing.
The armored concrete of the present invention uses CFRP- steel composite reinforcings, and CFRP- steel composite reinforcing can be prefabricated, construction is simple side
Just；The CFRP anodes of CFRP- steel composite reinforcings and the reinforcing bar as cathode are closely linked, and 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 more CFRP- steel composite reinforcings being embedded in concrete 3, CFRP- steel composite reinforcings include the reinforcing bar 1 as inner core and cover
The CFRP wrapping layers 2 on the surface of lid reinforcing bar.2 parallel connection of CFRP wrapping layers on reinforcing bar 1 is followed by the anode of DC power supply B, as interior
1 parallel connection of reinforcing bar of core is followed by the cathode of DC power supply B.In CFRP- steel composite reinforcings, the carbon fiber in CFRP wrapping layers 2 is along reinforcing bar 1
Axial distribution.
CFRP- steel composite reinforcing (the Carbon Fiber Steel Composite that the reinforcing bar of the embodiment of the present invention uses
Bar), CFRP- steel composite reinforcing is a kind of NEW TYPE OF COMPOSITE combining two kinds of material property advantages of continuous carbon fibre and regular reinforcement
Muscle material；The processing technology of FRP tendons is utilized to draw continuous carbon fiber to the steel as inner core in reinforcing bar external pasting CFRP
Muscle surface makes it be uniformly distributed in an axial direction in rebar surface, compound by mold extruding, drawing, the CFRP- steel that is formed by curing
Muscle.
The present invention proposes a kind of principal rod using CFRP- steel composite reinforcing as reinforced concrete structure, and with CFRP-
Steel composite reinforcing serves as the cathode protection device that anode/cathode carries out self-shield.It is compound for single CFRP- steel composite reinforcing
Anode of the CFRP protective layers as cathodic protection circuit outside muscle, as the regular reinforcement of muscle material inner core in the moon inside composite reinforcing
Cathode is served as in pole protection circuit, CFRP protective layers are electrically connected with the anode of DC power supply, regular reinforcement inner core and direct current
The cathode in source, the cathodic protection circuit of formation；It, will for the reinforced concrete structure using CFRP- steel composite reinforcing as principal rod
The CFRP protective layers of CFRP- steel composite reinforcing are electrically connected in reinforced concrete structure, the anode system as cathodic protection circuit
System, the regular reinforcement as inner core in CFR- steel composite reinforcings is electrically connected, right as the cathod system of cathode circuit
CFRP- steel composite reinforcings carry out self-shield.Anode system is served as in this cathode protecting process is outside CFRP- steel composite reinforcings
CFRP protective layers reduce engineering cost without using other materials as anode system.Since each CFRP- steel is multiple
Close muscle in simultaneously with the presence of as anode CFRP protective layers and as the regular reinforcement of cathode, one cathodic protection electricity of self-contained
Road, since CFRP protective layers and regular reinforcement are respectively as a part for composite reinforcing and existing for being closely linked two
It will not be interfered by concrete between person, therefore resistance between the two is smaller, and circuit is more stablized.
For using CFRP- steel composite reinforcing as the reinforced concrete structure of principal rod, in structure casting concrete, (or component is pre-
System) when, the CFRP protective layers of matched CFRP- steel composite reinforcing are electrically connected, and is connected with DC power supply anode；It will match multiple
It closes the regular reinforcement in muscle as inner core to be electrically connected, and is connected with the cathode of DC power supply.After energization, charge (electronics) by
DC power supply flows to the inner core (cathode electrode) of CFRP- steel composite reinforcings by conducting wire, makes regular reinforcement cathodic polarization, inhibits reinforcing bar
The oxidation reaction of inner core；Under electric field action, Cl-Away from the direction movement of regular reinforcement, reduce around regular reinforcement
Cl-Concentration provides protective effect to regular reinforcement.
Compared with prior art, beneficial effects of the present invention are embodied in：
1, easy for construction：Compared with previous anode system, CFRP- steel composite reinforcing anode system proposed by the present invention is in engineering
There is fairly obvious advantage in construction.Especially when applied to cathodic protection in newly-built reinforced concrete structure, such as use
On newly-built reinforced concrete structure in erosion environment, (pre-buried) can be mounted directly before casting concrete in structure,
It is easy for construction without secondary operation, greatly reduce construction volume.
2, the utilization rate of material is improved：In cathode protecting process proposed by the present invention, using in concrete structure as by
A part for the CFRP- steel composite reinforcings of power muscle itself carries out cathodic protection as anode to principal rod, without using other sun
Pole material, a muscle is multi-purpose, improves the utilization rate of material.
3, there is apparent economic benefit：Due to the present apparatus as anode system CFRP protective layers with it is protected common
Reinforcing bar inner core is closely linked, and reduces resistance between the two, while improving the stability of circuit, therefore is using
Middle electric energy expends less.
Claims (5)
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 wrapping layers for being covered in rebar surface,
CFRP wrapping layer parallel connections on complex root reinforcing bar are followed by DC power anode, and complex root bar parallel is followed by the negative of DC power supply
Pole.
2. protecting reinforced concrete cathode device according to claim 1, which is characterized in that the carbon fiber in CFRP wrapping layers
The axial direction tieed up along reinforcing bar is distributed.
3. a kind of protecting reinforced concrete cathode method of CFRP anodes, which is characterized in that using CFRP- steel composite reinforcings as steel
Reinforcing bar in reinforced concrete uses, and the CFRP wrapping layers of CFRP- steel composite reinforcing rebar surfaces are connect DC power supply as anode
Anode, the cathode of DC power supply is connect using the reinforcing bar inner core of CFRP- steel composite reinforcings as cathode.
4. protecting reinforced concrete cathode method according to claim 3, which is characterized in that CFRP- steel composite reinforcings
Carbon fiber in CFRP wrapping layers is distributed along the axial direction of CFRP- steel composite reinforcings.
5. protecting reinforced concrete cathode method according to claim 3, which is characterized in that CFRP- steel composite reinforcings press with
Lower step makes：Continuous carbon fiber is drawn to the rebar surface as inner core, it is made uniformly to divide in an axial direction in rebar surface
Cloth, by mold extruding, drawing, the CFRP- steel composite reinforcings being formed by curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842340.8A CN106283071B (en) | 2016-09-22 | 2016-09-22 | A kind of protecting reinforced concrete cathode method and apparatus of CFRP anodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842340.8A CN106283071B (en) | 2016-09-22 | 2016-09-22 | A kind of protecting reinforced concrete cathode method and apparatus of CFRP anodes |
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| Publication Number | Publication Date |
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| CN106283071A CN106283071A (en) | 2017-01-04 |
| CN106283071B true CN106283071B (en) | 2018-08-31 |
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| IL104837A (en) * | 1992-03-23 | 1996-01-31 | Norwegian Concrete Tech | Method for electrochemical treatment of reinforcing steel in concrete having embedded steel reinforcement |
| CN103469212B (en) * | 2013-08-05 | 2015-11-25 | 青岛双瑞海洋环境工程股份有限公司 | For the anode conducting weighting material of protecting reinforced concrete cathode system |
| CN206143309U (en) * | 2016-09-22 | 2017-05-03 | 深圳大学 | CFRP anodal reinforced concrete cathode protection device |
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