CN104196260A - Method for repairing concrete beam through electric osmosis electromigration type corrosion inhibitor - Google Patents
Method for repairing concrete beam through electric osmosis electromigration type corrosion inhibitor Download PDFInfo
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- CN104196260A CN104196260A CN201410442089.7A CN201410442089A CN104196260A CN 104196260 A CN104196260 A CN 104196260A CN 201410442089 A CN201410442089 A CN 201410442089A CN 104196260 A CN104196260 A CN 104196260A
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Abstract
The invention discloses a method for repairing a concrete beam through an electric osmosis electromigration type corrosion inhibitor and belongs to the field of existing building reinforcement and reconstruction in civil engineering. The method includes the steps that a cathode lead is led out of the concrete beam (a reinforcing mesh) to be repaired, the two side walls and the bottom face of the concrete beam to be repaired are coated with an adsorption piece adsorbing the electric osmosis electromigration type corrosion inhibitor, the adsorption piece is coated with a titanium wire net, an anode lead is led out of the titanium wire net, and finally a direct current power source is connected between the cathode lead and the anode lead. According to the method, a protective film is formed on the surfaces of exposed reinforcing steel bars, chloride ions with negative charges in concrete are transferred outside, the concrete desalting effect is achieved, the corrosion resistant effect is enhanced, and the method is large in application significance.
Description
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technical field:
A kind of method that the present invention relates to electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam, belongs to civil engineering existing building strengthening reconstruction field.
background technology:
Steel concrete is as a kind of economical and practical constructional materials, since being born, just be widely used in civil engineering, as sluice, dam, speedway, high building etc.But along with application widely, the shortcoming of its durability deficiency also manifests day by day.Affect reinforced concrete structure durability because have corrosion of steel bar, carbonization, freeze thawing, the physical mechanics effect of environment etc.In affecting the factors of reinforced concrete ten durability, the corrosion and destruction of reinforcing bar in concrete is primary factor.According to statistics, there is the loss that causes of corrosion about l800～3,600 hundred million yuan in China in 1 year.As can be seen here, pay attention to the durability of steel concrete, corrosion of steel bar research is significant.
Corrosion of steel bar prevention and improvement in concrete of the prior art, conventional method has 4 kinds: adopt corrosion-resistant steel bar, corrosion inhibitor, cathodic protection and concrete surface protecting to process.Migrating corrosion inhibitor has infiltration mobility, by concrete surface and inner pore, crackle, can be penetrated into rebar surface, and reinforcing bar is hindered to rust protection, resistance rust, significant and research.Electromigration type corrosion inhibitor is a kind of in migration-type corrosion inhibitor; its aqueous solution energy ionization; and cation is main resistance rust group; by electric osmose, process; under the effect of electric field, the cationic resistance rust group of corrosion inhibitor moves to rebar surface easily, and rebar surface also moves to concrete is outside with electronegative chlorion simultaneously; the protective effect of reinforcing bar is strengthened to resistance rust successful.
In being at present both at home and abroad substantially in concrete to the application of corrosion inhibitor, mix corrosion inhibitor, or apply migrating corrosion inhibitor at concrete surface, inside mix corrosion inhibitor due to convenient operation, in Practical Project, apply more, but only can be for project under construction.For the reparation of built engineering, conventional migrating corrosion inhibitor carrys out repair structure, but because the naturally osmotic ability of corrosion inhibitor is general, resistance rust poor effect, the application in Practical Project is also relatively less.
Therefore, the necessary deficiency of prior art being improved to solve prior art.
summary of the invention:
The present invention is a kind of method of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam that provides in order to solve the problem of above-mentioned prior art existence.
The technical solution used in the present invention has:
A method for electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam, is characterized in that: the method comprises the steps:
(1) the loose concrete layer for the treatment of in rehabilitating concrete beam cuts, cleans, and exposed steel bar is carried out to processing of rust removing, simultaneously from the steel mesh reinforcement of concrete beam to be repaired, draws cathode leg, and by concrete repair to designing requirement.
(2) the suitable leakage-proof socket of the width of processing and concrete beam to be repaired, there is the adsorption piece of electromigration type corrosion inhibitor to be wrapped in two sides and the bottom surface of concrete beam to be repaired absorption, then with titanium wire network, be wrapped on the adsorption piece of both sides, and from titanium wire network, draw anode tap, leakage-proof socket is positioned on concrete beam to be repaired, and leakage-proof socket is arranged on described concrete beam to be repaired by fastening devices.
(3) between cathode leg and anode tap, access dc source, electric osmose 5-10 days, after electric osmose, removes fastening devices, leakage-proof socket and adsorption piece, and concrete beam reparation completes.
The present invention further design is:
Surrounding at concrete beam to be repaired in step 1) first sets up scaffold.
Concrete repair in step 1) in concrete beam to be repaired adopts and repairs to designing requirement higher than the pea gravel concrete of former concrete strength one-level, and maintenance, to the corresponding length of time, makes intensity reach designing requirement.
Step 2) leakage-proof socket described in adopts the PVC groove that cross section is U-shaped, and both sides cell wall is corresponding to the two sides of concrete beam to be repaired, and the forward and backward open side of leakage-proof socket and concrete beam to be repaired cooperation place are provided with waterstop or sealing rod.
Step 2) between titanium wire network described in and leakage-proof socket, also accompany one deck cystosepiment, in order to support and fixedly adsorption piece and titanium wire network.
Step 2) fastening devices described in comprises angle bar frame, set bolt and scaffold, and described leakage-proof socket is fixedly connected on angle bar frame, and angle bar frame is again by scaffold support.
In step 3), dc source employing current density is 2A/m
2the electric current of (to be repaired the total surface area of steel mesh reinforcement in beam).
Described adsorption piece is adopted as sponge or the cystosepiment that thickness is 15-30cm.
The length of described leakage-proof socket is suitable with concrete beam length to be repaired, and this concrete beam to be repaired is adopted to disposable reparation; Or be less than concrete beam length to be repaired, this concrete beam to be repaired is adopted to repeatedly segment type reparation.
The present invention has following beneficial effect:
(1) the present invention is by electric osmose electromigration type corrosion inhibitor, can be applied in the reinstatement works of concrete in mass beam, combines with Practical Project, has larger using value and meaning.
(2) the present invention utilizes electric osmose electromigration corrosion inhibitor, and when exposed rebar surface forms diaphragm, in concrete, electronegative chlorion moves to outside, has also reached the effect of concrete desalination, and resistance rust effect strengthens, and application value increases.
(3) the present invention is easy to make, cost is low, safe and reliable, have good popularizing action.
accompanying drawing explanation:
Fig. 1 is structural representation of the present invention.
Fig. 2 is part-structure schematic diagram of the present invention
Wherein: 1, cathode leg; 2, anode tap; 3, concrete beam to be repaired; 4, adsorption piece; 5, scaffold; 6, titanium wire network; 7, bolt; 8, angle bar frame; 9, leakage-proof socket; 10, cystosepiment; 11, liquid injection port.
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the specific embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Please refer to Fig. 1 to Fig. 2, the method for a kind of electric osmose electromigration of the present invention type corrosion inhibitor rehabilitating concrete beam, concrete construction method is as follows:
First the surrounding at concrete beam 3 to be repaired sets up scaffold 5, while setting up scaffold 5, require scaffold 5 width to need every limits to exceed to add 2 meters of the width of concrete beam 3 to be repaired, the height of scaffold 5 is to 1 meter of concrete beam to be repaired 3 times, scaffold 5 surroundings are set up fence, on fence, lay simultaneously, fixing bamboo basketry sheet, guarantee safety, the loose concrete layer for the treatment of in rehabilitating concrete beam 3 cuts, clean, to exposed steel bar, Corrosion Reinforcement is used wire brush to carry out processing of rust removing, from the steel mesh reinforcement of concrete beam 3 to be repaired, draw cathode leg 1 simultaneously, finally to repair higher than the pea gravel concrete of original concrete strength one-level on concrete beam 3 to be repaired, maintenance is to the corresponding length of time, make intensity reach designing requirement.
Then according to the suitable leakage-proof socket 9 of the width processing of concrete beam 3 to be repaired and its size, leakage-proof socket 9 adopts PVC material to make, and the cross section of leakage-proof socket 9 is U-shaped.The both sides cell wall of leakage-proof socket 9 is corresponding to the two sides of concrete beam 3 to be repaired.The length of the length of leakage-proof socket 9 and concrete beam to be repaired 3 is suitable, and this concrete beam 3 to be repaired is adopted to disposable reparation; Or be less than concrete beam length to be repaired, this concrete beam to be repaired is adopted to repeatedly segment type reparation.
Secondly adsorption piece 4 is immersed in migrating corrosion inhibitor, migrating corrosion inhibitor adopts BE corrosion inhibitor, imidazoline quaternary ammonium salt corrosion inhibitor or other corrosion inhibitors; Wherein to be a kind of inorganic acid be neutralized to PH by the aromatic derivant of monoethanolamine to BE corrosion inhibitor is 7 ammonium salt; Imidazoline quaternary ammonium salt corrosion inhibitor be take dimethylbenzene as solvent and a minute aqua, adopts laurate and triethylene diamine, and through the synthetic lauric acid imidazoline of two steps dehydrations, products therefrom adopts that sodium chloroacetate is quaternary ammoniated obtains cationic imidazoline quaternary ammonium salt.The material of adsorption piece 4 is a kind of in sponge or cystosepiment, and its thickness is 15-30cm.Draw for upon adsorption 4 after sufficient migrating corrosion inhibitor, be wrapped in two sides and the bottom surface of concrete beam 3 to be repaired, then with titanium wire network 6, be wrapped in the side of adsorption piece 4, from titanium wire network 6, draw anode tap 2, the present invention is in order to be better rolled in adsorption piece 4 and titanium wire network 6 fixed packet on the sidewall of concrete beam 3 to be repaired, and better protect titanium wire network 6, extend the application life of titanium wire network 6 simultaneously, also accompany one deck cystosepiment 10 stating between titanium wire network 6 and leakage-proof socket 9, wherein adsorption piece 4, titanium wire network 6 and cystosepiment 10 are plugged in leakage-proof socket 9, leakage-proof socket 9 Combined with Radiotherapies are placed on concrete beam 3 to be repaired.The present invention leaks out from the forward and backward port of leakage-proof socket 9 in order to prevent migrating corrosion inhibitor, in forward and backward open side and concrete beam to be repaired 3 cooperation places of leakage-proof socket 9, is provided with waterstop or sealing rod.
Then fabrication and installation angle bar frame 8 and scaffold 5, the inside dimension width of angle bar frame 8 is greater than or equal to leakage-proof socket 9 outside dimension width, default aperture, both sides at angle bar frame 8 is two groups of bolts hole of Φ 12, every group of bolt hole comprises two, and the pitch-row of the two is 600mm, the bolt 7 matching with this bolt hole in bolt hole setting, by bolt 7 successively by leakage-proof socket 9, titanium wire network 6 and adsorption piece 4 are fixed on the sidewall of concrete beam to be repaired 3, finally by the part position pad on scaffold 5, be located at angle bar frame 8 times, guarantee the stable of angle bar frame 8, firmly.
Finally between cathode leg 1 and anode tap 2, accessing dc source, is 2A/m by current density
2the electric current electric osmose 5-10 days of (in the total surface area of steel mesh reinforcement in this concrete beam 3 to be repaired).As because of reasons such as heats, corrosion inhibitor solution loss is too much, can to suction sheet 4, supplement corrosion inhibitor solution from liquid injection port 11.After electric osmose, loose bolts 7, unloads angle bar frame 8, removes successively angle bar frame 8, leakage-proof socket 9, titanium wire network 6 and adsorption piece 4, finally removes scaffold 5.
The present invention utilizes a kind of method of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam, and when exposed rebar surface forms diaphragm, in concrete, electronegative chlorion moves to outside, has also reached the effect of concrete desalination, and resistance rust effect strengthens.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.
Claims (9)
1. a method for electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam, is characterized in that: the method comprises the steps:
(1) the loose concrete layer for the treatment of in rehabilitating concrete beam cuts, cleans, and exposed steel bar is carried out to processing of rust removing, simultaneously from the steel mesh reinforcement of concrete beam to be repaired, draws cathode leg, and by concrete repair to designing requirement;
(2) the suitable leakage-proof socket of the width of processing and concrete beam to be repaired, there is the adsorption piece of electromigration type corrosion inhibitor to be wrapped in two sides and the bottom surface of concrete beam to be repaired absorption, then with titanium wire network, be wrapped on the adsorption piece of both sides, and from titanium wire network, draw anode tap, leakage-proof socket is positioned on concrete beam to be repaired, and leakage-proof socket is arranged on described concrete beam to be repaired by fastening devices;
(3) between cathode leg and anode tap, access dc source, electric osmose 5-10 days, after electric osmose, removes fastening devices, leakage-proof socket and adsorption piece, and concrete beam reparation completes.
2. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, is characterized in that: the surrounding at concrete beam to be repaired in step 1) first sets up scaffold.
3. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, it is characterized in that: the concrete repair in step 1) in concrete beam to be repaired adopts and repairs to designing requirement higher than the pea gravel concrete of former concrete strength one-level, maintenance, to the corresponding length of time, makes intensity reach designing requirement.
4. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, it is characterized in that: step 2) described in leakage-proof socket adopt the PVC groove that cross section is U-shaped, both sides cell wall is corresponding to the two sides of concrete beam to be repaired, and the forward and backward open side of leakage-proof socket and concrete beam to be repaired cooperation place are provided with waterstop or sealing rod.
5. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, is characterized in that: step 2) described in also accompany one deck cystosepiment between titanium wire network and leakage-proof socket, in order to support and fixedly adsorption piece and titanium wire network.
6. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, it is characterized in that: step 2) described in fastening devices comprise angle bar frame, set bolt and scaffold, described leakage-proof socket is fixedly connected on angle bar frame, and angle bar frame is again by scaffold support.
7. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, is characterized in that: in step 3), dc source employing current density is 2A/m
2electric current.
8. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, is characterized in that: described adsorption piece is adopted as sponge or the cystosepiment that thickness is 15-30cm.
9. the method for a kind of electric osmose electromigration type corrosion inhibitor rehabilitating concrete beam according to claim 1, is characterized in that: the length of described leakage-proof socket is suitable with concrete beam length to be repaired, treats rehabilitating concrete beam and adopts disposable reparation; Or be less than concrete beam length to be repaired, treat rehabilitating concrete beam and adopt repeatedly segment type reparation.
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| CN201410442089.7A CN104196260A (en) | 2014-09-02 | 2014-09-02 | Method for repairing concrete beam through electric osmosis electromigration type corrosion inhibitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460997A (en) * | 2017-08-25 | 2017-12-12 | 程丽娜 | A kind of reinforcement in concrete antirust pre-embedded device |
| CN109236300A (en) * | 2018-07-30 | 2019-01-18 | 中煤科工集团西安研究院有限公司 | A kind of electro transport for preventing mine concrete pit shaft from being destroyed by ion erosion |
| CN109322700A (en) * | 2018-07-30 | 2019-02-12 | 中煤科工集团西安研究院有限公司 | Electrotransport devices for preventing mine concrete pit shaft from being destroyed by ion erosion |
| CN109812048A (en) * | 2019-04-10 | 2019-05-28 | 北京中科行运科技有限公司 | A kind of Electrotransport devices of concrete top facade structures |
| CZ308905B6 (en) * | 2020-03-18 | 2021-08-18 | České vysoké učení technické v Praze | Method of strengthening building masonry structures and equipment for carrying out this method |
| CN109812048B (en) * | 2019-04-10 | 2024-05-31 | 石家庄精弘机械制造有限公司 | Electromigration device of concrete top elevation structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460997A (en) * | 2017-08-25 | 2017-12-12 | 程丽娜 | A kind of reinforcement in concrete antirust pre-embedded device |
| CN109236300A (en) * | 2018-07-30 | 2019-01-18 | 中煤科工集团西安研究院有限公司 | A kind of electro transport for preventing mine concrete pit shaft from being destroyed by ion erosion |
| CN109322700A (en) * | 2018-07-30 | 2019-02-12 | 中煤科工集团西安研究院有限公司 | Electrotransport devices for preventing mine concrete pit shaft from being destroyed by ion erosion |
| CN109812048A (en) * | 2019-04-10 | 2019-05-28 | 北京中科行运科技有限公司 | A kind of Electrotransport devices of concrete top facade structures |
| CN109812048B (en) * | 2019-04-10 | 2024-05-31 | 石家庄精弘机械制造有限公司 | Electromigration device of concrete top elevation structure |
| CZ308905B6 (en) * | 2020-03-18 | 2021-08-18 | České vysoké učení technické v Praze | Method of strengthening building masonry structures and equipment for carrying out this method |
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Application publication date: 20141210 |