CN206143311U - CFRP anodal reinforced concrete cathode protection device - Google Patents

Abstract

The utility model discloses a CFRP anodal reinforced concrete cathode protection device, including the concrete, bury complex root reinforcing bar, DC power supply and CFRP positive pole in the concrete, the CFRP positive pole for the CFRP pipe of cover in reinforcing bar outside, fill electrically conductive adhesive linkage in the clearance between CFRP pipe and the reinforcing bar, connect DC power supply anodal after complex root CFRP pipe is parallelly connected, connect DC power supply's negative pole after the complex root reinforcing bar is parallelly connected. The utility model discloses a does reinforced concrete adopt the CFRP pipe the reinforcing bar combination, the CFRP pipe the reinforcing bar combination can be prefabricated, and it is simple and convenient to be under construction, conveniently is used for newly -built building, the CFRP pipe the CFRP positive pole of reinforcing bar combination combines to be in the same place through electrically conductive adhesive linkage with the reinforcing bar as the negative pole, and resistance is little, and the power consumption is low.

Description

A kind of protecting reinforced concrete cathode device of CFRP anodes

[technical field]

The utility model is related to protecting reinforced concrete cathode, more particularly to a kind of armored concrete negative electrode of CFRP anodes 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, 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, 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 operation, 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) is larger, and the resistance between negative electrode and anode is big, big energy-consuming.

[content of the invention]

The technical problems to be solved in the utility model be to provide a kind of easy construction, the resistance between negative electrode and anode it is little, The protecting reinforced concrete cathode device of the low CFRP anodes of engineering cost.

In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is that a kind of reinforcing bar of CFRP anodes is mixed Solidifying soil cathode protection device, including concrete, the complex root reinforcing bar, dc source and the CFRP anodes that are embedded in concrete, it is described CFRP anodes be enclosed within outside reinforcing bar CFRP pipe, CFRP pipe and reinforcing bar between gap in fill conduction adhesive linkage；It is multiple Several CFRP pipes parallel connections are 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 adhesives and is dispersed in bonding Conductive particle in material.

Above-described protecting reinforced concrete cathode device, described adhesives is cement mortar or organic resin Glue.

Armored concrete of the present utility model adopts the pipe-reinforced combinations of CFRP, the pipe-reinforced combinations of CFRP to apply with prefabricated Work is simple and convenient, is conveniently used for new building；The CFRP anodes of the pipe-reinforced combinations of CFRP and the reinforcing bar as negative electrode pass through conduction Adhesive linkage be combined together, resistance is little, consume energy it is low.

[description of the drawings]

The utility model is described in further detail 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 the utility model embodiment CFRP anode Figure.

Fig. 2 is the structural representation in the protecting reinforced concrete cathode device cross section of the utility model embodiment CFRP anode Figure.

[specific embodiment]

The structure of the protecting reinforced concrete cathode device of the utility model embodiment CFRP anode as depicted in figs. 1 and 2, Including concrete and the pipe-reinforced combinations of many CFRP being embedded in concrete 3, the pipe-reinforced combinations of CFRP are included as inner core Reinforcing bar 1, the CFRP pipes 2 being enclosed within outside reinforcing bar and it is filled in the conductive adhesive linkage 4 in gap between CFRP pipes 2 and reinforcing bar 1.Reinforcing bar The parallel connection of CFRP pipes 2 of 1 outside is followed by the positive pole of dc source B, and the parallel connection of reinforcing bar 1 as inner core is followed by the negative pole of dc source B.

Conductive adhesive linkage includes adhesives and the conductive particle being dispersed in adhesives.In the present embodiment, glue It is cement mortar or organic resin glue to connect material, and organic resin glue can be epoxy resin, vinylite or polyester resin.Lead Electric particle can be short carbon fiber or other conductive materials.The conductive short carbon fiber of addition can be with reinforced cement mortar bonding material The electric conductivity of material, after cement mortar is configured, adds appropriate chopped fiber, and stirs.

The manufacturing process of the pipe-reinforced combinations of CFRP is as follows：Reinforcing bar is decontaminated first, pretreatment of polishing, handling well Rebar surface brushing contain the adhesives of conductive particle, and the reinforcing bar for coating adhesives is inserted in CFRP pipes, pass through Binding material combines CFRP pipes and reinforcing bar integral.Can also pour into containing leading in the reinforcing bar handled well insertion CFRP pipes The adhesives of electric particle, with adhesives the gap between CFRP pipes and regular reinforcement is filled, and is allowed to reference to integral.

In structure casting concrete (or element precast), by structure be electrically connected using the CFRP pipes outside reinforcing bar Connect, and be connected with DC power cathode；By be electrically connected with regular reinforcement, and be connected with the negative pole of dc source B.It is powered Afterwards, electric charge (electronics) is flowed to the regular reinforcement (cathode electrode) in CFRP pipes by dc source by wire, makes regular reinforcement cloudy Pole is polarized, and suppresses the oxidation reaction of reinforcing bar inner core；Under electric field action, Cl^-Move away from the direction of regular reinforcement, reduce Cl around regular reinforcement^-Concentration, to regular reinforcement protective effect is provided.

In the cathode protecting process of the utility model above example, the CFRP electrically connected with DC power anode is managed not Only can to serve as anode system in circuit, meanwhile, CFRP pipes are combined into an entirety by binding material and regular reinforcement, are mixing Participate in reinforcing bar stress in Xtah Crude Clay structure jointly, a material is multiplex, reduces the usage amount of reinforcing bar, reduces engineering cost.Due to CFRP in circuit as anode system is managed and closely tied by inorganic cementitious material and the regular reinforcement as cathod system between It is combined, it is in small distance between the two, the resistance between negative electrode and anode is reduced, more preferable protected effect can be reached. This anode system can be used for the newly-built reinforced concrete structure in erosion environment, first by CFRP pipe boxes outside regular reinforcement Portion, is then mounted directly in structure, without the need for secondary operation, easy construction during concreting (element precast).

Compared with prior art, the beneficial effects of the utility model are embodied in：

1st, easy construction：Compared with conventional anode system, the utility model proposes the pipe-reinforced combined anode systems of CFRP There is fairly obvious advantage in engineering construction.The especially cathodic protection in newly-built reinforced concrete structure is applied to When, the newly-built reinforced concrete structure being such as used in erosion environment can be mounted directly (pre-buried) before casting concrete and exist In structure, without the need for secondary operation, easy construction, construction volume is greatly reduced.

2nd, improve the utilization rate of material：The utility model proposes cathode protecting process in, anode is served as in circuit The CFRP pipes of system itself can reduce the usage amount of reinforcing bar with regular reinforcement cooperatively stress, realize a material multiplex.

3rd, with obvious economic benefit：Because this device is used as the CFRP pipes and protected regular reinforcement of anode system Inner core is closely linked (between the two only between alternating floor binding material), reduces resistance between the two, while improving The stability of circuit, therefore in use electric energy expends few.

Claims (3)

1. a kind of protecting reinforced concrete cathode device of CFRP anodes, including concrete, the complex root steel being embedded in concrete Muscle, dc source and CFRP anodes, it is characterised in that described CFRP anodes are to be enclosed within the CFRP pipes outside reinforcing bar, CFRP pipes The adhesive linkage of conduction 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 negative pole of dc source.

2. protecting reinforced concrete cathode device according to claim 1, it is characterised in that conductive adhesive linkage includes viscous Connect material and the conductive particle being dispersed in adhesives.

3. protecting reinforced concrete cathode device according to claim 1, it is characterised in that described adhesives is water Cement mortar or organic resin glue.