CN202939152U - Long-service-life embedded reference electrode for monitoring/detecting corrosion of reinforced concrete - Google Patents
Long-service-life embedded reference electrode for monitoring/detecting corrosion of reinforced concrete Download PDFInfo
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- CN202939152U CN202939152U CN2012204433592U CN201220443359U CN202939152U CN 202939152 U CN202939152 U CN 202939152U CN 2012204433592 U CN2012204433592 U CN 2012204433592U CN 201220443359 U CN201220443359 U CN 201220443359U CN 202939152 U CN202939152 U CN 202939152U
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Abstract
The utility model relates to a long-service-life embedded reference electrode for monitoring/detecting corrosion of reinforced concrete. The reference electrode comprises an electrode body, and is characterized in that the periphery of the electrode body is coated with a cement mortar filler; an electrode sheath is arranged on the periphery of the cement mortar filler, and openings are formed in two ends of the electrode sheath; and one end of a cable is connected with the electrode body arranged inside the cement mortar filler, and the other end penetrates through the electrode sheath and extends to the exterior. The long-acting reference electrode can be pre-buried in a prestressed concrete cylinder pipe (PCCP) and a substance with a large reinforced concrete structure, the expectant service life can be longer than 50 years, the designed service life is longer than that of a silver/silver chloride reference electrode, and the reference electrode has the same service life as that of the reinforced concrete.
Description
Technical field
The utility model relates to reinforced concrete structures corrosion and guard technology field, particularly a kind of embedment type reference electrode for inspecting/detecting steel reinforced concrete erosion.
Background technology
At present, the contrast electrode that is applied in concrete field mainly contains silver/silver chloride contrast electrode, manganese dioxide reference electrode and copper sulfate reference electrode.
Copper sulfate reference electrode is used usually used as portable or temporary measurement, because the electrode of this metal/metal salt solusion class needs enough moisture to guarantee metal salt solution, interior reference is electrolytical stable.So the diaphragm material of electrode should be controlled copper sulphate to the electrode external penetration, guarantee to control again the migration of moisture.Therefore, kind electrode the designed life in concrete can be over 10 years.
At present at commercial field, using more successful is metal/metal indissoluble salt contrast electrode.Such as silver/silver chloride contrast electrode, manganese dioxide reference electrode and Mo/MoO3 electrode.
For silver/silver chloride contrast electrode, Chinese patent CN200710144314.9, provide a kind of Rust of Rebar in Concrete all-solid reference electrode for monitoring and preparation method thereof.This contrast electrode adopts the Ag/AgCl/KClsat system, from the axle center of contrast electrode, outwards is followed successively by Ag, AgCl layer, three component porous layers and the grout layer formation that purity is 99.99%.The present invention takes into full account Rust of Rebar in Concrete and monitors the singularity such as required contrast electrode long-life, current potential be stable, adopt cheap Ag/AgCl/KClsat system to prepare a kind of novel all solid state long service life reference electrode (ASSRE), adopt three component porous structures to overcome the shortcoming that the ordinary liquid contrast electrode life-span is short, intensity is low.But, the concrete in oceanographic engineering, in the full phase in longevity chlorine ion concentration usually change larger, therefore due to the change very earth effect of chlorine ion concentration the stability of Ag/AgCl electrode potential.
Chinese patent 200810013870.7, the bulk material of electrode is the Mo/MoO3 electrode.Agent structure comprises gland, cable, electrode sealing bore, porous ceramics shell, electrode body and alkaline electrolyte paste; It is the alkaline electrolyte liquid of pasty state that interior reference electrolyte is stuck with paste, and adds appropriate absorbent polymer material; External shell is crushing resistance porous ceramics shell, the ceramic package base seal, and electrode integral is made integral structure admittedly.
Chinese patent 200710016441.0 relates to a kind of manganese dioxide reference electrode be applied in concrete, and agent structure comprises sealant tape, concrete semi-permeable diaphragm, alkaline-resisting tissue paper, manganese ring, collector steel cylinder and wire.
The benefit of this class electrode is that the metal/metal difficulty soluble salt is more stable electrode pair, does not need too many moisture to participate in setting up electrode pair.Therefore, only need a small amount of moisture to guarantee the stability of electrochemical measurement.Usually, the interior reference electrolyte that need to make pasty state gets final product.In order to guarantee the stability of long-term electrochemical measurement, avoid moisture dry, also added water absorbing agent in the reference electrolyte in alkalescence.But this class electrode is in actual fabrication process, and the metal difficulty soluble salt easily produces multiple valence state and crystal formation.Therefore, electrode potential reappearance prepared by different batches is not too high, needs strict checking procedure before use.
Summary of the invention
For overcoming the defect of prior art, the utility model provides a kind of long-life embedment type reference electrode for inspecting/detecting steel reinforced concrete erosion.The technical solution of the utility model is: a kind of long-life embedment type reference electrode for inspecting/detecting steel reinforced concrete erosion, comprise electrode body, it is characterized in that: the periphery at described electrode body is enclosed with cement mortar filler, electrode sheath is arranged on the periphery of cement mortar filler, its two ends are provided with opening, one end of cable is connected with the electrode body in being arranged on cement mortar filler, and the other end passes described electrode sheath to outside.
Described electrode body is comprised of titanium base material and the precious metal oxide coating that is arranged on the titanium substrate surface thereof.
Described precious metal oxide coating adopts IrO
2+ Ta
2O
5Mixed oxide.
The utility model has the advantages that: be adapted at embedding application in concrete alkalescence medium, reduced and concrete medium between liquid junction potential, add absorbent material and overbased material in the sand-cement slurry wrappage simultaneously, guaranteed the stability of Ti/MMO electrode material surrounding medium, provide assurance for measuring steadily in the long term current potential, have good, the anti-polarization performance of potential stability strong, be easy to bury underground and sealing; Outstanding feature is that the life-span is long, and be that concrete is with the phase in longevity designed life.
The accompanying drawing explanation
Fig. 1 is agent structure schematic diagram of the present utility model.
Embodiment
Referring to Fig. 1, a kind of long-life embedment type reference electrode for inspecting/detecting steel reinforced concrete erosion, comprise electrode body 1, be enclosed with cement mortar filler 2 in the periphery of described electrode body 1, electrode sheath 3 is arranged on the periphery of cement mortar filler 2, its two ends are provided with opening, and an end of cable 4 is connected with the electrode body 1 in being arranged on cement mortar filler 2, and the other end passes described electrode sheath 3 to outside.
Described electrode body 1 is comprised of titanium base material and the precious metal oxide coating (be called for short Ti/MMO) that is arranged on the titanium substrate surface thereof, and the titanium base material adopts ASTM B265 one-level titanium material, can adopt guipure shape or thread material, described precious metal oxide coating employing IrO
2+ Ta
2O
5Mixed oxide.
Described cement mortar filler 2 provides the alkaline medium environment of a long-term stability to electrode body, this is conducive to the stable of electrode potential, mainly by portland cement, adjuvant, sand, water, formed, wherein adjuvant is lithium bromide, lithium nitrate and bentonitic one or more potpourris that form according to arbitrary proportion, in sand-cement slurry, the quality ratio range of cement, sand, water is 1:(1.5～3.0): (0.2～0.8), the three accounts for 90～95% of gross mass altogether, and the admixture adjuvant accounts for 5～10% of gross mass altogether.
The utility model is immersed in to Simulated pore solution, i.e. saturated Ca (OH)
2In, the average electrical electrode potential of relative saturation mercurous chloride electrode is+50 ± 20 mV, owing to adopting cement mortar filler parcel electrode body, therefore will reduce the liquid junction potential of contrast electrode and concrete interface.
Claims (2)
1. a long-life embedment type reference electrode for inspecting/detecting steel reinforced concrete erosion, comprise electrode body, it is characterized in that: the periphery at described electrode body is enclosed with cement mortar filler, electrode sheath is arranged on the periphery of cement mortar filler, its two ends are provided with opening, one end of cable is connected with the electrode body in being arranged on cement mortar filler, and the other end passes described electrode sheath to outside.
2. long-life embedment type reference electrode for inspecting/detecting steel reinforced concrete erosion according to claim 1 is characterized in that: described electrode body is comprised of titanium base material and the precious metal oxide coating that is arranged on the titanium substrate surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204433592U CN202939152U (en) | 2012-09-03 | 2012-09-03 | Long-service-life embedded reference electrode for monitoring/detecting corrosion of reinforced concrete |
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|---|---|---|---|
| CN2012204433592U CN202939152U (en) | 2012-09-03 | 2012-09-03 | Long-service-life embedded reference electrode for monitoring/detecting corrosion of reinforced concrete |
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| CN202939152U true CN202939152U (en) | 2013-05-15 |
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| CN2012204433592U Expired - Lifetime CN202939152U (en) | 2012-09-03 | 2012-09-03 | Long-service-life embedded reference electrode for monitoring/detecting corrosion of reinforced concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655552A (en) * | 2015-02-13 | 2015-05-27 | 宁波工程学院 | In-situ solid monitoring device and in-situ solid monitoring method for in-service concrete structure reinforcing bar corrosion process |
| JP2018004283A (en) * | 2016-06-27 | 2018-01-11 | 株式会社ナカボーテック | Reference electrode |
| CN108169109A (en) * | 2017-12-20 | 2018-06-15 | 河海大学 | A kind of Ag/AgCl solid state reference electrodes and preparation method |
| CN112595760A (en) * | 2020-11-27 | 2021-04-02 | 中山大学 | In-situ monitoring device for oxygen concentration in concrete and preparation and use methods thereof |
| CN114622605A (en) * | 2022-03-11 | 2022-06-14 | 国网甘肃省电力公司经济技术研究院 | A kind of concrete cast-in-place pile resistance tomography monitoring device and monitoring method |
| CN114672810A (en) * | 2022-03-22 | 2022-06-28 | 深圳智高博实工程有限公司 | Reference electrode for reinforced concrete cathode protection and manufacturing method |
| ES2968550A1 (en) * | 2023-10-18 | 2024-05-10 | Univ Valencia Politecnica | REFERENCE ELECTRODE FOR MONITORING SYSTEMS OF REINFORCED CONCRETE STRUCTURES AND ITS USE (Machine-translation by Google Translate, not legally binding) |
-
2012
- 2012-09-03 CN CN2012204433592U patent/CN202939152U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655552A (en) * | 2015-02-13 | 2015-05-27 | 宁波工程学院 | In-situ solid monitoring device and in-situ solid monitoring method for in-service concrete structure reinforcing bar corrosion process |
| CN104655552B (en) * | 2015-02-13 | 2018-02-02 | 宁波工程学院 | The entity monitoring device and method in situ of existing RC structures arrangement of reinforcement corrosion process |
| JP2018004283A (en) * | 2016-06-27 | 2018-01-11 | 株式会社ナカボーテック | Reference electrode |
| CN108169109A (en) * | 2017-12-20 | 2018-06-15 | 河海大学 | A kind of Ag/AgCl solid state reference electrodes and preparation method |
| CN112595760A (en) * | 2020-11-27 | 2021-04-02 | 中山大学 | In-situ monitoring device for oxygen concentration in concrete and preparation and use methods thereof |
| CN114622605A (en) * | 2022-03-11 | 2022-06-14 | 国网甘肃省电力公司经济技术研究院 | A kind of concrete cast-in-place pile resistance tomography monitoring device and monitoring method |
| CN114672810A (en) * | 2022-03-22 | 2022-06-28 | 深圳智高博实工程有限公司 | Reference electrode for reinforced concrete cathode protection and manufacturing method |
| CN114672810B (en) * | 2022-03-22 | 2024-02-02 | 深圳智高博实工程有限公司 | Reference electrode for reinforced concrete cathode protection and manufacturing method |
| ES2968550A1 (en) * | 2023-10-18 | 2024-05-10 | Univ Valencia Politecnica | REFERENCE ELECTRODE FOR MONITORING SYSTEMS OF REINFORCED CONCRETE STRUCTURES AND ITS USE (Machine-translation by Google Translate, not legally binding) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |