CN101738368A - Concrete pipe cathode protection testing probe and testing method - Google Patents
Concrete pipe cathode protection testing probe and testing method Download PDFInfo
- Publication number
- CN101738368A CN101738368A CN200810181240A CN200810181240A CN101738368A CN 101738368 A CN101738368 A CN 101738368A CN 200810181240 A CN200810181240 A CN 200810181240A CN 200810181240 A CN200810181240 A CN 200810181240A CN 101738368 A CN101738368 A CN 101738368A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- concrete
- cable
- concrete pipe
- probe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 108
- 239000000523 sample Substances 0.000 title claims abstract description 58
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000004210 cathodic protection Methods 0.000 claims description 26
- 238000005260 corrosion Methods 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 15
- 230000002269 spontaneous effect Effects 0.000 claims description 14
- 238000004088 simulation Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 10
- 230000010287 polarization Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000840 electrochemical analysis Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a concrete pipe cathode protection testing probe and a testing method. The probe comprises a concrete structure body, a first steel wire, a reference electrode, an auxiliary electrode, a plurality of cables and an outer protection layer, wherein the concrete structure body simulates a concrete core of a concrete pipe; the first steel wire, the reference electrode and the auxiliary electrode which are separated from one another in a non-stress state are arranged in the concrete structure body; the cables comprise a first steel wire cable, a reference electrode cable and an auxiliary electrode cable; one end of the corresponding cable is electrically connected with the first steel wire, the reference electrode and the auxiliary electrode respectively; the other end of each cable extends out of the concrete structure body; the outer protection layer is covered on the surface of the concrete structure body; and the concrete structure body, the first steel wire and the outer protection layer are all made of the same material as that of the simulated concrete pipe.
Description
Invention field
The present invention relates to cathodic protection detection technique field; be particularly related to concrete pipe cathode protection testing probe and method of testing, be mainly used in parameters such as the spontaneous potential of measuring concrete pipe steel wire (particularly PCCP pipe and reinforced concrete structure compressor wire), cathodic protection polarized potential, corrosion rate, polarization characteristic.
Background technology
Prestressed concrete cylinder pipe (being called for short PCCP) is the novel tube material that grows up domestic nearly more than ten years.It has been gathered raw and auxiliary materials such as steel plate, high-strength prestressed steel wire, high-strength concrete, high-strength mortar and rubber seal and has been made, and is a kind of compound tubing that possesses high strength, high permeability resistant and high leakproofness.Owing to possess plurality of advantages, the application of PCCP tubing in water delivery engineering is increasing.South water to north center line Beijing section promptly adopts 56 kilometers PCCP pipelines.In order to reduce the corrosion failure of inner steel cylinder and compressor wire in the PCCP pipeline operational process to greatest extent, increase the service life, need take coating and cathodic protection anti-corrosion measure.In order to judge the cathodic protection effect; need obtain measurement data accurately; because the architectural feature of PCCP pipe; make PCCP tube cathode protection effect judge and have following problem: judge the 100mV polarization criterion of stipulating in the NACE RP0100-2004 standard accurately; need to obtain cathodic polarization potential and spontaneous potential; and after the energising of PCCP cathodic protection system, the spontaneous potential accurately that is difficult to reentry, this brings difficulty with regard to the judgement of giving this criterion.Concrete architectural feature simultaneously, it is bigger to make that IR in the test of PCCP tube cathode protection potential falls, and influence the accuracy of cathodic protection effect judgement.For reinforced concrete structure; external practice requires must adopt the probe identical with material with protected body structure in the cathodic protection test with relevant criterion (NACE TM0497, NACE RP0104); otherwise be difficult to measure real cathodic protection potential, the present domestic cathode protection testing probe that is exclusively used in xoncrete structure that still do not have.And traditional steel pipe can't measure the spontaneous potential of steel wire with test probe; can't simulate the concrete environment of PCCP pipeline; can't simulate also that compressor wire bears certain stress state among the PCCP, therefore can't satisfy the requirement of PCCP cathodic protection test.PCCP cathodic protection measuring technology is still blank at home at present.Attempted the work aspect the concrete test probe in the big artificial river conservancy worker's journey of Libya, owing to be subjected to the restriction of sonde configuration and inner reference, the test effect is unsatisfactory.Novelty assessment report points out still not have at present the PCCP of being exclusively used in pipeline both at home and abroad, can measure the cathode protection testing probe of cathodic protection potential and spontaneous potential simultaneously.Along with the application order benefit of PCCP pipeline increases, the exploitation of PCCP cathode protection testing probe also becomes an extremely urgent job.
Simultaneously, in common concrete pipe cathodic protection measuring technology,, exist IR to fall big, cathodic protection effect in the potential test equally and judge inaccurate problem because what adopt at present all is the mode of simple test pieces.
Summary of the invention
The technical matters that will solve of the present invention is to overcome above-mentioned problems of the prior art; a kind of steel wire in the concrete pipe of measuring effectively is provided; the cathode protection testing probe of the spontaneous potential of compressor wire, cathodic protection polarized potential and other corrosion parameters in the PCCP pipe particularly; and a kind of method of testing; obtain the cathode protecting parameter of compressor wire by test probe, thereby judge the cathodic protection level that is reached.
For achieving the above object, the invention provides a kind of concrete pipe cathode protection testing probe, this probe is used for the running status of mould concrete pipe, and this probe comprises: concrete body, the concrete core of simulation concrete pipe; First steel wire, contrast electrode and the auxiliary electrode that are in unstress state that is spaced apart from each other is set on concrete body; Many cables comprise first steel wire cable, contrast electrode cable and auxiliary electrode cable, and an end of respective cable links to each other with corresponding first steel wire, contrast electrode and auxiliary electrode are electric respectively, and the other end of each cable stretches out from concrete body; Outer jacket covers the xoncrete structure surface; Described concrete body, first steel wire, outer jacket all adopt the simulation concrete pipe identical materials with institute.
According to an aspect of the present invention, concrete pipe is the PCCP pipe, twine second steel wire that is in stress state on the concrete body of described probe, the prestress that this second steel wire is born is more than or equal to steel wire bore in the PCCP pipe of being simulated prestress, second steel wire is identical with the material of the compressor wire of PCCP pipe, and with the spaced apart setting of first steel wire, contrast electrode and auxiliary electrode.Many cables also comprise second steel wire cable, and the one end links to each other with second steel wire, and it is external that the other end stretches out xoncrete structure.
The present invention also provides a kind of method of testing cathodic protection effect in the concrete pipe operational process, may further comprise the steps: the structure of (1) simulation concrete pipe forms concrete pipe cathode protection testing probe, first steel wire, contrast electrode and the auxiliary electrode of unstress state are set in this probe, and first steel wire, contrast electrode and auxiliary electrode are electrically connected with extraneous by cable respectively; (2) the concrete cathode protection testing probe is provided with under near working environment identical institute's simulation concrete pipe; (3) cable of concrete cathode protection testing probe links to each other with detective pole, can obtain spontaneous potential, cathodic protection polarized potential, the corrosion rate of concrete pipe steel wire by measuring, thereby the validity of concrete pipe cathode protection system is judged.
Cathode protection testing probe of the present invention is structurally close with the concrete duct of being simulated, and particularly under the situation of simulation PCCP pipe, can simulate in the PCCP pipe the residing concrete environment of compressor wire and bear certain stress state.Cathode protection testing probe of the present invention adopts nearly reference measuring technology, and the IR that eliminates in the potential measurement process falls.The embedded contrast electrode that is adopted should guarantee the stability of current potential in the concrete environment and the accuracy of measurement.Parameters such as the spontaneous potential of inner compressor wire, cathodic protection potential, corrosion electric current density, corrosion rate when this cathode protection testing probe can be measured the PCCP pipe accurately and passes through the soil environment of different rerum naturas.In addition, PCCP cathode protection testing probe processing technology thereof scheme of the present invention is feasible, and quality is easy to control, is convenient to produce in batches.
Description of drawings
Fig. 1 is the synoptic diagram of concrete pipe cathode protection testing probe one embodiment of the present invention;
Fig. 2 is the synoptic diagram of another embodiment of concrete pipe cathode protection testing probe of the present invention;
Fig. 3 is the synoptic diagram of the another embodiment of concrete pipe cathode protection testing probe of the present invention.
Embodiment
Below in conjunction with accompanying drawing is that example is described the present invention in detail with the specific embodiment.But, the scope that these embodiment do not limit the present invention in any way.
As shown in Figure 1, concrete pipe test probe 1 of the present invention has the structure similar to the concrete pipe of being simulated, and promptly comprises concrete body 10 and at the external outer jacket 11 of xoncrete structure.Concrete body is by concrete material vibrating compacting in mould, and forms through demoulding maintenance, has intensity.In can be, also can have the steel wire (not shown in figure 1) as common concrete pipe for right cylinder, cube or rectangular parallelepiped concrete body 10.In addition, first steel wire 12, contrast electrode 13 and the auxiliary electrode 14 that are in unstress state that can adopt any known mode in this area in concrete body, to be provided with to be spaced apart from each other.One preferred embodiment in, can on the periphery of concrete body, form isolated three recesses, as by grooving 15,15 ', 15 " mode form, first steel wire 12, contrast electrode 13 and auxiliary electrode 14 are arranged in the corresponding concave part.In order to keep the stability of contrast electrode, add the filler of preserving moisture that absorbs water near the first end of the test of contrast electrode 13.First steel wire 12, contrast electrode 13 and auxiliary electrode 14 are electrically connected by welding or mechanical grip mode with corresponding cable 16,17,18 respectively, and can carry out insulating corrosion at connecting portion and handle.These cables finally extend concrete body 10, can link to each other with the detective pole that is arranged on ground.
The tester can utilize existing potential measurement instrument and electro-chemical test system to test.Cable by cable that the potential measurement instrument is connected contrast electrode respectively and first steel wire that links to each other with the concrete pipe steel wire of being simulated records the cathodic protection polarized potential; the cable that the potential measurement instrument is connected the cable of contrast electrode and first steel wire that does not link to each other with the concrete pipe steel wire of being simulated respectively records spontaneous potential; and the three-electrode system that the cable of the cable of the cable by the electro-chemical test system being connected contrast electrode and first steel wire and impressed current anode constitutes records the polarization curve of steel wire in varying environment; can get its corrosive property according to polarization curve, comprise from corrosion electric current density; corrosion rate etc.Can the validity of the concrete pipe cathode protection system that be simulated of probe be judged by The above results.
In order to measure conveniently, a preferred example that is used for the probe of common concrete pipe, first steel wire can comprise two sections, and promptly first section and second section, this two section first steel wire is intervally installed and has separately cable.The potential measurement instrument can connect the cable of first section steel wire and the cable of contrast electrode comes the spontaneous potential of measuring steel wire.Simultaneously, the cable of second section steel wire can link to each other with the steel wire cable of measured concrete pipe.The current potential instrument can be measured second section cable and the cable of contrast electrode obtains the cathodic protection polarized potential
In the present invention's embodiment shown in Figure 3, end at probe forms cavity 20, the through hole 22 (as shown in Figure 1) that forms on concrete body of the cable 16,17,18 that links to each other with first steel wire 12, contrast electrode 13 and auxiliary electrode 14 is contained in the cavity 20 respectively, can seal by the filling epoxy curing agent in the cavity.The cable that extends concrete body at last can be contained in the cable collar 21.
Above-mentioned contrast electrode and auxiliary electrode can adopt electrode well known in the art.In more preferred example, contrast electrode is selected manganese dioxide reference electrode for use.Auxiliary electrode adopts mixed-metal oxides impressed current anode, conducting polymer impressed current anode or carbon-point impressed current anode.
In another scheme of the present invention as shown in Figure 2, concrete pipe is the PCCP pipe, twines second steel wire 30 that is in stress state on the concrete body of probe.According to the specification of concrete body, adopt the bending mould of different size that second steel wire 30 is carried out bending machining, can not carry out any thermal treatment in the BENDING PROCESS, can not destroy material property.The prestress that this second steel wire is born is more than or equal to the prestress that steel wire bore in the PCCP pipe of being simulated, and second steel wire is identical with the material of the compressor wire of PCCP pipe, and spaced apart with first steel wire, contrast electrode and auxiliary electrode.Second steel wire 30 links to each other with second steel wire cable 31.The other end of second steel wire cable 31 stretches out as other cable that xoncrete structure is external to link to each other with detective pole, as being contained in the cavity of concrete body by through hole 32.Others shown in Figure 2 can be identical with aforesaid embodiment.
The tester can utilize existing potential measurement instrument and electro-chemical test system to test.Cable by cable that the potential measurement instrument is connected contrast electrode respectively and first steel wire that links to each other with the PCCP pipe steel wire of being simulated records the cathodic protection polarized potential; the potential measurement instrument is connected the cable of second steel wire respectively and the cable of contrast electrode records spontaneous potential; and the three-electrode system that the cable of the cable of the cable by the electro-chemical test system being connected contrast electrode and first steel wire and impressed current anode constitutes records the polarization curve of steel wire in varying environment; can get its corrosive property according to polarization curve, comprise from corrosion electric current density; corrosion rate etc.Can the validity of the PCCP tube cathode protection system that be simulated of probe be judged by The above results.
Therefore, the project organization of this PCCP cathode protection testing probe embodiment possesses following function:
1. in the time of can measuring the PCCP pipe and pass through the soil environment of different rerum naturas, the spontaneous potential of compressor wire;
2. can measure apply cathodic protection after, the cathodic protection polarized potential of compressor wire in the PCCP pipe;
3. can simulate the residing stress state of steel wire in the PCCP pipe;
4. in the time of can measuring the PCCP pipe and pass through the soil environment of different rerum naturas, the corrosion polarization curve of compressor wire, corrosion rate etc.
The example that forms PCCP cathode protection testing probe of the present invention is described below, further specifies characteristics of the present invention:
Example:
(1) processing and fabricating the concrete core mould, the concrete core diameter that make is 150mm, high is 300mm, inside be a diameter 75mm, high 150mm cylindrical cavity;
(2), set up concrete vibrational structure compacting stand according to the mechanical property demand of concrete sonde configuration.Cement, sand and the stone of certain proportioning are packed in the mould, in shaking table internal vibration compacting, through the demoulding behind the certain hour;
(3) set up the concrete core fog room of constant temperature and humidity, concrete core is placed on carries out maintenance in the fog room, up to reaching desired intensity;
(4) be that the compressor wire of 5mm carries out bending operation to diameter, form compressor wire planform in the concrete.It should be noted that in order not destroy material property, can not carry out any thermal treatment in the BENDING PROCESS.
(5) groove of three different sizes of machining on concrete column is to put into contrast electrode, working electrode and auxiliary electrode.And on concrete wall, hole, so that passing concrete wall, stretches out cable connection from the probe top.
(6) put into contrast electrode, working electrode and auxiliary electrode in the groove that on concrete column, cuts respectively,, increase the high filler of preserving moisture that absorbs water at its head position for preventing the contrast electrode neat head.Cable is linked to each other with the compressor wire of case of bending, compressor wire, contrast electrode and working electrode from etch state respectively, connect the back and carry out the logical test of electricity with multimeter, joint area will guarantee enough firmly, and the employing heat shrink sleeve insulate.The aperture that cable connection passes on the concrete wall stretches out in the pocket type structure at probe top, then toward the interior infusion epoxy resin hardening agent of pocket type structure, makes cable pass position sealing and insulation.
(7) installing contrast electrode, working electrode, auxiliary electrode, after finishing cable and connecting,, treating promptly to obtain after overlayer solidifies operable prestressed concrete probe at probe outside gunite overlayer.
A plurality of probes as above are set in the laying scope of pipeline, just can be well understood to the steel wire corrosion and the cathode protection condition of whole pipeline.
In the present invention, the concrete main body structure of probe, first and second steel wires, outer jacket are all selected for use and concrete pipe of being simulated or PCCP pipe identical materials.
Although the present invention has been described with reference to preferred embodiment, but the present invention is not limited to this, under the prerequisite that does not break away from the present invention's spirit and essence, those of ordinary skill in the art can carry out the distortion and the change of various equivalences to the present invention, and these distortion and change are all in covering scope of the present invention.
Claims (10)
1. concrete pipe cathode protection testing probe, this probe is used for the running status of mould concrete pipe, and this probe comprises:
Concrete body, the concrete core of simulation concrete pipe;
First steel wire, contrast electrode and the auxiliary electrode that are in unstress state that is spaced apart from each other is set in concrete body;
Many cables comprise first steel wire cable, contrast electrode cable and auxiliary electrode cable, and an end of respective cable links to each other with corresponding first steel wire, contrast electrode and auxiliary electrode are electric respectively, and the other end of each cable stretches out from concrete body;
Outer jacket covers the xoncrete structure surface;
Described concrete body, first steel wire, outer jacket all adopt the simulation concrete pipe identical materials with institute.
2. according to the described concrete pipe cathode protection testing probe of claim 1; it is characterized in that; described concrete pipe is the PCCP pipe; twine second steel wire that is in stress state on the concrete body of described probe; the prestress that this second steel wire is born is more than or equal to steel wire bore in the PCCP pipe of being simulated prestress; second steel wire is identical with the material of the compressor wire of PCCP pipe, and with the spaced apart setting of first steel wire, contrast electrode and auxiliary electrode
Described cable comprises second steel wire cable, and the one end links to each other with second steel wire, and it is external that the other end stretches out xoncrete structure.
3. according to claim 1 or 2 described concrete pipe cathode protection testing probes; it is characterized in that; a described end at concrete body has cavity, and described many cables are received within the described cavity and from described cavity and stretch out, and fills the insulated enclosure packing material in the described cavity.
4. according to claim 1 or 2 described concrete pipe cathode protection testing probes, it is characterized in that described many cable holding are in a cable collar.
5. according to the described concrete pipe cathode protection testing probe of claim 2, it is characterized in that, on the outer peripheral face of concrete body, form three recesses, described first steel wire, contrast electrode and auxiliary electrode are set respectively in recess.
6. according to the described concrete pipe cathode protection testing probe of claim 2, it is characterized in that described recess is a groove, be arranged in parallel with the winding direction of second steel wire.
7. according to claim 1 or 2 described concrete pipe cathode protection testing probes, it is characterized in that concrete body is by concrete material vibrating compacting in mould, and form to have intensity through demoulding maintenance.
8. according to the described PCCP cathode protection testing probe of claim 1; it is characterized in that; described first steel wire comprises second section that is used to test first section of spontaneous potential and is used to test the cathodic protection polarized potential, and first section and second section has cable separately and be spaced apart from each other.
9. method of testing cathodic protection effect in the concrete pipe operational process may further comprise the steps:
(1) structure of simulation concrete pipe forms concrete pipe cathode protection testing probe, and first steel wire, contrast electrode and the auxiliary electrode of unstress state is set in this probe, and first steel wire, contrast electrode and auxiliary electrode are electrically connected with extraneous by cable respectively;
(2) the concrete cathode protection testing probe is provided with under near working environment identical institute's simulation concrete pipe;
(3) cable of concrete cathode protection testing probe links to each other with detective pole, can obtain spontaneous potential, cathodic protection polarized potential, the corrosion rate of concrete pipe steel wire by measuring, thereby the validity of concrete pipe cathode protection system is judged.
10. in accordance with the method for claim 9, it is characterized in that, adopt as each described cathode protection testing probe among the claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810181240A CN101738368B (en) | 2008-11-18 | 2008-11-18 | Concrete pipe cathode protection testing probe and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810181240A CN101738368B (en) | 2008-11-18 | 2008-11-18 | Concrete pipe cathode protection testing probe and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738368A true CN101738368A (en) | 2010-06-16 |
| CN101738368B CN101738368B (en) | 2012-10-03 |
Family
ID=42462119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810181240A Expired - Fee Related CN101738368B (en) | 2008-11-18 | 2008-11-18 | Concrete pipe cathode protection testing probe and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101738368B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063566A (en) * | 2011-10-20 | 2013-04-24 | 中国石油化工股份有限公司 | Stress corrosion cracking on-line monitoring probe |
| CN104005032A (en) * | 2014-05-08 | 2014-08-27 | 青岛双瑞海洋环境工程股份有限公司 | Cathode protection test probe of prestressed steel cylinder concrete pipe and preparation method thereof |
| CN109328306A (en) * | 2016-06-29 | 2019-02-12 | 阿尔法能源技术公司 | The combined type flux ring and B-DOT line of mineral insulation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1239344B (en) * | 1990-02-26 | 1993-10-20 | Cescor Centro Studi Corrosione | AUTOMATIC CONTROL AND REGULATION DEVICE OF CATHODIC PROTECTION SYSTEMS OF REINFORCED CONCRETE STRUCTURES |
| IT1246041B (en) * | 1990-11-16 | 1994-11-07 | Oronzio De Nora Sa | PERMANENT REFERENCE ELECTRODE FOR MEASUREMENT OF THE ELECTROCHEMICAL POTENTIAL OF METAL REINFORCEMENT IN CONCRETE. |
| CN101144769B (en) * | 2007-09-29 | 2010-08-18 | 哈尔滨工业大学 | Five electrode steel bar corrosion monitoring sensor and its preparation method |
| CN201347454Y (en) * | 2008-11-18 | 2009-11-18 | 北京市水利规划设计研究院 | Cathodic protection test probe for concrete pipe |
-
2008
- 2008-11-18 CN CN200810181240A patent/CN101738368B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063566A (en) * | 2011-10-20 | 2013-04-24 | 中国石油化工股份有限公司 | Stress corrosion cracking on-line monitoring probe |
| CN104005032A (en) * | 2014-05-08 | 2014-08-27 | 青岛双瑞海洋环境工程股份有限公司 | Cathode protection test probe of prestressed steel cylinder concrete pipe and preparation method thereof |
| CN109328306A (en) * | 2016-06-29 | 2019-02-12 | 阿尔法能源技术公司 | The combined type flux ring and B-DOT line of mineral insulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101738368B (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2013101531A4 (en) | Deep softrock geostress test method and device based on flow stress recovery principle | |
| CN103344193B (en) | Optical fiber concrete freeze thawing expansion strain monitoring sensor | |
| CA2789194C (en) | Pile sensing device and method of using the same | |
| CN106595918B (en) | A kind of long term monitoring device and method of the outer soil pressure of duct pieces of shield tunnel | |
| CN103575769B (en) | A kind of piezoelectric transducer for monitoring steel bar corrosion and monitoring steel bar corrosion method | |
| CN101857957A (en) | Cathodic protection monitoring probe, cathodic protection monitoring probe monitoring system, and manufacturing method and monitoring method thereof | |
| CN102353628B (en) | Polarization testing probe and testing method for cathodic protection of underground steel pipelines | |
| EP2947456B1 (en) | Method for positioning a sensor for concrete monitoring | |
| CN106950167B (en) | Full-scale Ocean Oil And Gas Pipeline stress etching experiment method | |
| CN101738368B (en) | Concrete pipe cathode protection testing probe and testing method | |
| CN201662525U (en) | Cathode protection monitoring probe and cathode protection monitoring probe monitoring system | |
| CN201347454Y (en) | Cathodic protection test probe for concrete pipe | |
| CN107014744B (en) | A kind of Reinforcing Steel Bar In Reinforced Concrete Structure corrosion ratio monitoring device and monitoring method | |
| CN203310382U (en) | Concrete freeze-thaw expansion strain monitoring fiber sensor | |
| CN205066708U (en) | Inside freeze thawing dilatational strain optical fiber sensor of monitoring concrete structure | |
| CN106226100B (en) | A kind of side slope prestress anchorage cable service performance test structure and test method | |
| CN106568390A (en) | Concrete freeze-thaw expansion strain sensor | |
| CN206399562U (en) | A kind of stress detection device for building | |
| JP5579031B2 (en) | Crack repair method for concrete structure and concrete structure | |
| CN203809954U (en) | Bilateral interactive cathode protected PCCP (prestressed concrete cylinder pipe) | |
| JP3905354B2 (en) | Tunnel structure, tunnel structure damage diagnosis method, damage detection material, tunnel construction method, and tunnel repair method | |
| CN206891624U (en) | Device for monitoring rusty expansion stress of steel bar in rear-mounted concrete | |
| CN209014178U (en) | A kind of reinforcing rib meter with waterproof pressure function | |
| CN106841516B (en) | A kind of confined concrete arch support system Radial Coupling evaluating characteristics | |
| CN208383335U (en) | A kind of arch bridge stiff skeleton external wrapping concrete nano cement sensor temp measuring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Du Yanxia Inventor after: Shi Weixin Inventor after: Wang Dongli Inventor after: Yang Jinxin Inventor after: Lu Minxu Inventor after: Shen Laixin Inventor after: Jiang Pengfei Inventor before: Lu Minxu Inventor before: Wang Dongli Inventor before: Yang Jinxin Inventor before: Du Yanxia Inventor before: Shi Weixin Inventor before: Shen Laixin Inventor before: Jiang Pengfei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LU MINXU WANG DONGLI YANG JINXIN DU YANXIA SHI WEIXIN SHEN LAIXIN JIANG PENGFEI TO: DU YANXIA SHI WEIXIN WANG DONGLI YANG JINXIN LU MINXU SHEN LAIXIN JIANG PENGFEI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |