CN206143310U - CFRP embedding anodal reinforced concrete cathode protection device - Google Patents
CFRP embedding anodal reinforced concrete cathode protection device Download PDFInfo
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- CN206143310U CN206143310U CN201621074205.5U CN201621074205U CN206143310U CN 206143310 U CN206143310 U CN 206143310U CN 201621074205 U CN201621074205 U CN 201621074205U CN 206143310 U CN206143310 U CN 206143310U
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Abstract
The utility model discloses a CFRP embedding anodal reinforced concrete cathode protection device, including concrete, complex root reinforcing bar, DC power supply and CFRP positive pole, the CFRP positive pole include the compound principal rod of complex root CFRP, the compound principal rod of CFRP and reinforcing bar bury in the concrete parallelly, the compound principal rod of complex root CFRP links the DC power supply positive pole, the reinforcing bar connect DC power supply's negative pole after parallelly connected. The utility model discloses the construction is simple, the adhesion strength between anode material and the concrete is high, the resistance between the anode and cathode is little, expense when having reduced engineering cost and protection circuit normal use.
Description
[technical field]
This utility model is related to protecting reinforced concrete cathode, more particularly to a kind of armored concrete of the embedded anodes of CFRP
Cathode protection device.
[background technology]
Armored concrete as a kind of structural material, in being 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, cause 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, using improved corrosion reinforcing bar etc..In these measures, electrochemical cathodic protection method can directly suppress 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；Because impressed current method has the adjustable advantage of voltage x current, more favored by insider in Practical Project.
Since being applied to reinforced concrete structure from impressed current method, people are devoted to researching and developing anode system, constantly have new
Material is developed and applies.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, and skewness is also received
Environment and the impact in season.This just proposes higher requirement to selected anode system, and several anode systems of the above have
The example of reinforced concrete structure is applied to, but has 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, engineering cost is significantly increased,
This is for being an obstacle for being difficult to avoid in its application in Practical Project.
A kind of armored concrete of the embedded anodes of employing CFRP of the disclosure of the invention of Application No. CN201310131212.9
Cathode protecting process and device, methods described includes step：Groove is opened up in the protection zone position by given size；In steel
The protection zone surface of tendon concrete structure body arranges CFRP sheet materials, and the CFRP sheet materials include the ribbed stiffener being adapted to groove
And be fixed on the stiffener of protection zone inner surface；Binding material is applied to into the ribbed stiffener and concrete of the CFRP sheet materials
Between 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 in concrete into stiffening rib structure using CFRP sheet material designs reduce CFRP sheet materials with
The distance between reinforcing bar, reduces resistance between the two, so as to be conducive to xoncrete structure in protective current continuous uniform
Distribution, can reach more preferable protected effect.
But man-hour requirement secondary operation, construction trouble are applied in the invention；Since it is desired that secondary operations, anode material and coagulation
Adhesion strength between soil is difficult to ensure that the concertedness worked between anode material and concrete is bad；Anode material and negative electrode
Concrete thickness between material (reinforcing bar) exists, and the resistance between negative electrode and anode is big, big energy-consuming.
[content of the invention]
It is simple, viscous between anode material and concrete that the technical problems to be solved in the utility model is to provide a kind of construction
The protecting reinforced concrete cathode device of the embedded anodes of CFRP that knotting strength is high, the resistance between negative electrode and anode is little.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is that a kind of CFRP is embedded in the steel of anode
Reinforced concrete cathode protection device, including concrete, complex root reinforcing bar, DC source and CFRP anodes, described CFRP anodes
Including complex root CFRP composite force muscle, CFRP composite forces muscle is embedded in concrete with parallel reinforced steel bar；Complex root CFRP
Composite force muscle parallel connection is followed by DC power anode, and described bar parallel is followed by the negative pole of DC source.
Above-described protecting reinforced concrete cathode device, CFRP composite forces muscle and described spacing of reinforcement arrangement,
Each CFRP composite forces muscle is adjacent with two reinforcing bars.
Above-described protecting reinforced concrete cathode device, in same row, every piece CFRP of two steel bar arrangements
Composite force muscle, or every piece CFRP composite force muscle of a steel bar arrangement.
Above-described protecting reinforced concrete cathode device, described CFRP anodes include carbon fiber silk screen, carbon fiber
The described CFRP composite force muscle of silk screen connection, electrically connects with CFRP composite force muscle.
Above-described protecting reinforced concrete cathode device, described steel bar arrangement is described in the inner side of concrete
CFRP anode arrangements are in the outside of concrete.
Above-described protecting reinforced concrete cathode device, described CFRP composite force muscle is by continuous carbon fibre Jing
Cross resin matrix dipping, Jing pultrusions, drawing, the fiber-reinforced composite material rib of curing molding.
Protecting reinforced concrete cathode device construction of the present utility model is simple, the bonding between anode material and concrete
Intensity is high, the resistance between negative electrode and anode is little, reduces engineering cost and expense when protection circuit is normally used.
[description of the drawings]
This utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the knot in the protecting reinforced concrete cathode device cross section of the embedded anode of this utility model embodiment 1CFRP
Structure schematic diagram.
Fig. 2 is the knot in the protecting reinforced concrete cathode device vertical section of the embedded anode of this utility model embodiment 1CFRP
Structure schematic diagram.
Fig. 3 is the structural representation of the protecting reinforced concrete cathode device of the embedded anode of this utility model embodiment 2CFRP
Figure.
Fig. 4 is the structural representation of this utility model embodiment 2CFRP anode.
[specific embodiment]
The structure of the protecting reinforced concrete cathode device of the embedded anode of this utility model embodiment CFRP is as shown in Figure 1 to Figure 4
It is shown.
CFRP composite force muscle (carbon fiber reinforced polymer bar) is a kind of by continuous fiber
(carbon fiber) through resin matrix impregnate, via pultrusion, drawing, curing molding fiber-reinforced composite material rib.It is light with its
Matter is high-strength, corrosion-resistant, resisting fatigue many advantages, such as and become the succedaneum of reinforcing bar in some engineering structures.
Embodiment 1：
The xoncrete structure of the monolayer arrangement of reinforcement of embodiment 1 as depicted in figs. 1 and 2, for monolayer arrangement of reinforcement armored concrete tie
Structure, at structure casting concrete (or element precast), interval is equipped with CFRP composite force muscle between the regular reinforcement matched somebody with somebody,
Then circuit in parallel is carried out to CFRP composite forces muscle and regular reinforcement respectively, and by CFRP composite forces muscle and DC source
Positive pole is connected, and regular reinforcement is connected with DC power cathode, forms cathodic protection circuit；As needed, CFRP composite forces
Muscle and every an arrangement (arranging a CFRP composite force muscle every regular reinforcement), it is also possible to every two arrangements (every two
Regular reinforcement arranges a CFRP composite force muscle).After energization, electric charge (electronics) is flowed to general by DC power cathode by wire
Logical reinforcing bar (cathode electrode), makes regular reinforcement cathodic polarization, suppresses the oxidation reaction of reinforcing bar；In the presence of electric field, electrolyte
Ion in (concrete) is moved, and electric current, Cl are formed in the electrolyte-It is negatively charged, to anode in the presence of electric field
(CFRP composite force muscle) is mobile, reduces the Cl around negative electrode (regular reinforcement)-Concentration, serves from another point of view protection steel
The effect of muscle.In the structure, CFRP composite forces muscle and regular reinforcement cooperatively stress, undertakes the effect of principal rod；Meanwhile,
In cathodic protection circuit, CFRP composite force muscle serves as main anode, because CFRP composite force muscle is buried together with regular reinforcement
Be placed in inside concrete so that in cathodic protection circuit between negative electrode (regular reinforcement) and anode (CFRP composite force muscle) away from
From less, resistance between the two is reduced such that it is able to more uniform protective current is provided, and reduces protection circuit just
Expense when often using.
Embodiment 2：
The xoncrete structure of the multilamellar arrangement of reinforcement of embodiment 2 as shown in Figure 3 and Figure 4, for multilamellar arrangement of reinforcement armored concrete tie
Structure, during casting concrete (or element precast), is connected xoncrete structure outer layer is pre-buried by continuous carbon fibre silk screen
Carbon fiber wire-CFRP composite force muscle the nets that CFRP composite forces muscle is formed, and regular reinforcement layer is arranged in into concrete inner side,
According to the change of structure load and environmental condition, carbon fiber-CFRP composite force muscle nets and regular reinforcement layer can be adjusted
Quantity and interval.Due to the anode system of this device, continuous carbon fibre silk-CFRP composite force muscle nets, it is with regular reinforcement
It is mounted directly before concreting in structure, (continuous carbon fibre-CFRP is compound to be received to reduce negative electrode in cathodic protection circuit
The distance between power muscle net) and anode (regular reinforcement layer), while main anode (CFRP composite force muscle) and impressed current anode are (continuous
Carbon fiber wire) formed conductive layer more uniform protective current can be provided；Simultaneously as the effect of electric field, Cl-By negative electrode
The negative electrode (regular reinforcement) of protection circuit to anode (continuous carbon fibre silk-CFRP composite force muscle nets) is mobile, around anode
Enrichment, so as to inhibit Cl-To the infiltration on the regular reinforcement surface in concrete.As the anode system of cathodic protection circuit,
CFRP composite forces muscle and continuous carbon fibre silk have good durability, meanwhile, by rationally arrange continuous carbon fibre silk-
CFRP composite force muscle nets and regular reinforcement, according to structure behaviour in service and environmental condition, adjust current intensity, cathodic protection electricity
Road can effectively protect the regular reinforcement in concrete, therefore, can effectively extend reinforced concrete structure using this device
Service life.
Compared with prior art, beneficial effects of the present invention are embodied in：
Easy construction：Compared with conventional anode system, carbon fiber wire-CFRP composite forces muscle net anode proposed by the present invention
System has fairly obvious advantage in engineering construction.Especially the negative electrode in newly-built reinforced concrete structure is applied to is protected
During shield, the newly-built reinforced concrete structure being such as used in erosion environment can be mounted directly (pre-buried) before casting concrete
In structure, without the need for secondary operation, easy construction greatly reduces construction volume.
Improve the utilization rate of material：CFRP composite forces muscle not only has excellent mechanical property, and absolutely mostly
Its stability can be kept in number solution, is considered in reinforced concrete structure preferable principal rod succedaneum.CFRP is combined
Principal rod is applied in reinforced concrete structure, can not only play a part of principal rod, while potentially acting as in impressed current method
Anode system, substantially increase the utilization rate of material.
With obvious economic benefit：Due to the principal rod that the CFRP composite forces muscle as anode system also takes on simultaneously
Effect, so as to reduce the usage amount of regular reinforcement；Due to the anode system of this device be before structure casting concrete it is pre-
It is embedded in concrete, reduces the thickness of concrete layer between negative electrode and anode, so as to reduces the electricity between negative electrode and anode
Resistance, therefore expend in use less.
In sum, above example of the present invention proposes that one kind serves as armored concrete knot using CFRP composite force muscle materials
The built-in type cathode protecting process and device of the anode system of structure impressed current cathodic protection method, using CFRP composite forces muscle as
Main anode, while connecting carbon fiber wire-CFRP composite force muscle made by each CFRP composite forces muscle with continuous carbon fibre silk screen
The anode system that net is formed.This anode system in armored concrete to serve as the CFRP composite force muscle of principal rod as master
Anode and without the need for separately setting other anodes, reduce engineering cost：Because CFRP composite forces muscle is located in armored concrete, with steel
Muscle it is in small distance, reduce the resistance between negative electrode and anode；Can carry as the continuous carbon fibre silk screen of impressed current anode simultaneously
For uniform electric field, more preferable protected effect can be reached；If this anode system for erosion environment in newly-built reinforcing bar mix
Xtah Crude Clay structure, can be mounted directly in structure, without the need for secondary operation, easy construction before casting concrete.
Claims (6)
1. a kind of CFRP is embedded in the protecting reinforced concrete cathode device of anode, including concrete, complex root reinforcing bar, DC source
With CFRP anodes, it is characterised in that described CFRP anodes include complex root CFRP composite force muscle, CFRP composite forces muscle with
It is embedded in concrete parallel reinforced steel bar；Complex root CFRP composite force muscle parallel connections are followed by DC power anode, described reinforcing bar
Parallel connection is followed by the negative pole of DC source.
2. protecting reinforced concrete cathode device according to claim 1, it is characterised in that CFRP composite forces muscle and institute
The spacing of reinforcement arrangement stated, each CFRP composite forces muscle is adjacent with two reinforcing bars.
3. protecting reinforced concrete cathode device according to claim 2, it is characterised in that in same row, every two
Piece CFRP composite force muscle of root steel bar arrangement, or every piece CFRP composite force muscle of a steel bar arrangement.
4. protecting reinforced concrete cathode device according to claim 1, it is characterised in that described CFRP anodes include
Carbon fiber silk screen, the described CFRP composite force muscle of carbon fiber silk screen connection, electrically connects with CFRP composite force muscle.
5. protecting reinforced concrete cathode device according to claim 4, it is characterised in that described steel bar arrangement is mixed
The inner side of soil is coagulated, described CFRP anode arrangements are in the outside of concrete.
6. protecting reinforced concrete cathode device according to claim 1, it is characterised in that described CFRP composite forces
Muscle is to impregnate continuous carbon fibre through resin, Jing pultrusions, drawing, the fiber-reinforced composite material rib of curing molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074205.5U CN206143310U (en) | 2016-09-22 | 2016-09-22 | CFRP embedding anodal reinforced concrete cathode protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074205.5U CN206143310U (en) | 2016-09-22 | 2016-09-22 | CFRP embedding anodal reinforced concrete cathode protection device |
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| CN206143310U true CN206143310U (en) | 2017-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283072A (en) * | 2016-09-22 | 2017-01-04 | 深圳大学 | A kind of CFRP embeds the protecting reinforced concrete cathode method and apparatus of anode |
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2016
- 2016-09-22 CN CN201621074205.5U patent/CN206143310U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283072A (en) * | 2016-09-22 | 2017-01-04 | 深圳大学 | A kind of CFRP embeds the protecting reinforced concrete cathode method and apparatus of anode |
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