NO305996B1 - Method of Attaching an Electrode Arrangement for Use in Cathodic Protection of Concrete Structures and Attachment Elements of the Electrode Arrangement - Google Patents
Method of Attaching an Electrode Arrangement for Use in Cathodic Protection of Concrete Structures and Attachment Elements of the Electrode Arrangement Download PDFInfo
- Publication number
- NO305996B1 NO305996B1 NO920638A NO920638A NO305996B1 NO 305996 B1 NO305996 B1 NO 305996B1 NO 920638 A NO920638 A NO 920638A NO 920638 A NO920638 A NO 920638A NO 305996 B1 NO305996 B1 NO 305996B1
- Authority
- NO
- Norway
- Prior art keywords
- framework
- concrete
- anode
- electrode arrangement
- cathodic protection
- Prior art date
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 42
- 238000004210 cathodic protection Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract 2
- 238000005266 casting Methods 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000004033 plastic Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/18—Means for supporting electrodes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2201/00—Type of materials to be protected by cathodic protection
- C23F2201/02—Concrete, e.g. reinforced
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measurement Of Force In General (AREA)
Abstract
Description
Den foreliggende oppfinnelse vedrører en fremgangsmåte for å feste et elektrodearrangement til bruk ved katodisk beskyttelse av betongkonstruksjoner. The present invention relates to a method for attaching an electrode arrangement for use in cathodic protection of concrete structures.
Oppfinnelsen vedrører også et festeelement for et elektrodearrangement til bruk ved katodisk beskyttelse av betongkonstruksjoner, og som omfatter en anode anordnet på en plan måte. The invention also relates to a fastening element for an electrode arrangement for use in cathodic protection of concrete structures, and which comprises an anode arranged in a planar manner.
Ved beskyttelse av ståldeler i betongkonstruksjoner, f.eks. betongarmeringer, blir anodene i elektrodearrangementet vanligvis festet til en eksisterende betongflate, og anoden blir dekket med "shotcrete" eller med annet tilsvarende ledende materiale. Imidlertid har det oppstått problemer på grunn av dårlig festeevne for elektrodearrangementet under støpingen. Ytterligere problemer har også fremkommet på grunn av at anoden under støpingen blir bøyd til kontakt med stålkonstruksjonen som skal beskyttes. When protecting steel parts in concrete structures, e.g. concrete reinforcements, the anodes in the electrode arrangement are usually attached to an existing concrete surface, and the anode is covered with "shotcrete" or with other similar conductive material. However, problems have arisen due to poor adhesion of the electrode arrangement during casting. Further problems have also arisen due to the anode being bent during casting into contact with the steel structure to be protected.
De ovennevnte situasjoner har gjort det betraktelig mer vanskelig og langsommere å utføre den aktuelle betongstøping. The above-mentioned situations have made it considerably more difficult and slower to carry out the concrete casting in question.
Formålet ved oppfinnelsen er å tilveiebringe et anode-festearrangement og en fremgangsmåte som når anvendt, eliminerer de ovennevnte problemsituasjoner. The purpose of the invention is to provide an anode attachment arrangement and a method which, when used, eliminates the above-mentioned problem situations.
Et annet formål ved oppfinnelsen er å tilveiebringe et slikt festearrangement som tilpasser seg selv for bruk i kontinuer-lige betongstøpeanvendelser. Another object of the invention is to provide such a fastening arrangement which adapts itself for use in continuous concrete casting applications.
For oppnåelse av de ovennevnte formål er fremgangsmåten kjennetegnet ved de trekk som fremgår av karakteristikken til krav 1. To achieve the above-mentioned purposes, the method is characterized by the features that appear in the characteristics of claim 1.
Festeelementet ifølge oppfinnelsen er kjennetegnet ved de trekk som er angitt i karakteristikken til krav 2. The fastening element according to the invention is characterized by the features stated in the characteristic of claim 2.
Et slikt anodeelement ifølge oppfinnelsen plassert i posisjon før betongstøpingen, er i visse tilfeller den eneste tekniske fornuftige løsning. Når, for eksempel ved beskyttelse av undervannsbetongkonstruksjoner, oppnås en betydelig fordel ved det forberedende trinn, når anodearrangementet er av en elementstrukturtype. Such an anode element according to the invention, placed in position before the concrete casting, is in certain cases the only technically sensible solution. When, for example, in the protection of underwater concrete structures, a significant advantage is obtained from the preparatory step, when the anode arrangement is of a prefabricated type.
Ved bruk av anodefestearrangementet ifølge oppfinnelsen, blir trykkeffekten av tilleggsmassen som frembringes ved "shot-creting" unngått. Videre blir antall nødvendige arbeidsfaser minsket ettersom anodeelementet er prefabrikert og kun feste av anodeelementet må utføres i forbindelse med betong-støpingen . When using the anode attachment arrangement according to the invention, the pressure effect of the additional mass produced by "shot-creting" is avoided. Furthermore, the number of necessary work phases is reduced as the anode element is prefabricated and only fixing of the anode element must be carried out in connection with the concrete casting.
Feste av elementet ifølge oppfinnelsen er lett, og det spares monteringstid ettersom et separat feste og isolasjonsarbeide for anoden i monteringstrinnet er eliminert. Attaching the element according to the invention is easy, and assembly time is saved as a separate attachment and insulation work for the anode in the assembly step is eliminated.
Elementet ifølge oppfinnelsen forblir festet til betong-konstruksjonene hvor det ikke er nødvendig med spesielle forholdsregler under betongstøpetrinnet, dvs. det er ikke nødvendig å anvende en lavere betongstøpehastighet. The element according to the invention remains attached to the concrete constructions where no special precautions are necessary during the concrete casting step, i.e. it is not necessary to use a lower concrete casting speed.
Konstruksjonen til anodeelementet ifølge oppfinnelsen er mekanisk stiv, slik at den ikke kan komme i elektrisk kontakt med betongarmeringen som skal beskyttes. Sett fra et operasjonssynspunkt for beskyttelsen, er unngåelse av elektrisk kontakt et av de grunnleggende krav. I tillegg kan anoden ifølge oppfinnelsen ikke bevege seg under betong-støpingen på grunn av sine festeinnretninger. The construction of the anode element according to the invention is mechanically rigid, so that it cannot come into electrical contact with the concrete reinforcement to be protected. From an operational point of view for the protection, avoidance of electrical contact is one of the basic requirements. In addition, the anode according to the invention cannot move during the concrete casting due to its fastening devices.
Ved bruk av elementet ifølge oppfinnelsen, sikres også ikke— brudd av en katodisk kontakt ettersom forbindelsen av alle betongarmeringslagene med katodekretsen, kan garanteres ved hjelp av flere festepunkter. When using the element according to the invention, non-breaking of a cathodic contact is also ensured, as the connection of all the concrete reinforcement layers with the cathode circuit can be guaranteed by means of several attachment points.
Anodeelementet ifølge oppfinnelsen danner et system av flere elementer, slik at hvert element kan hvis ønsket, bli styrt som en separat elektrisk krets. Anodesystemets drift blir herved sikret. The anode element according to the invention forms a system of several elements, so that each element can, if desired, be controlled as a separate electrical circuit. The operation of the anode system is thereby secured.
Oppfinnelsen blir nærmere beskrevet i det etterfølgende med henvisning til tegningen i den etterfølgende tegning, overfor hvilken oppfinnelsen imidlertid ikke på noen måte er begrenset. The invention is described in more detail below with reference to the drawing in the following drawing, to which the invention is however not limited in any way.
Figur IA og IB viser skjematisk et anodeelement ifølge oppf innelsen, Figures IA and IB schematically show an anode element according to the invention,
figur 2 viser et skjematisk delriss av et anodeelement ifølge oppfinnelsen, festet til en betongkonstruksjon. figure 2 shows a schematic partial view of an anode element according to the invention, attached to a concrete structure.
Et anodeelement 10 ifølge oppfinnelsen som vist i figur IA og IB omfatter et rammeverk 11, anoder 20 og festeinnretninger 15. Rammeverket 11 er fremstilt av et elektrisk isolerende materiale, f.eks. av plast eller keramikk eller av et elektrolytisk ledende materiale, f.eks. av betong, plast eller keramikk. Hvis ønsket, anvendes en stålarmering eller annen armering for å øke rammeverkets 11 styrkeegenskaper, hvilket imidlertid ikke er nødvendig. An anode element 10 according to the invention as shown in figures IA and IB comprises a framework 11, anodes 20 and fastening devices 15. The framework 11 is made of an electrically insulating material, e.g. of plastic or ceramics or of an electrolytically conductive material, e.g. of concrete, plastic or ceramics. If desired, a steel reinforcement or other reinforcement is used to increase the strength properties of the framework 11, which, however, is not necessary.
I en foretrukket utførelsesform av oppfinnelsen fremstilles anodeelementets 10 rammeverk 11 av betong, ettersom det derved oppnås et godt feste til betongstøpen. Videre, når rammeverket 11 er fremstilt av betong, unngås mulig skadelige varmeekspansjonsfenomener. In a preferred embodiment of the invention, the framework 11 of the anode element 10 is made of concrete, as a good attachment to the concrete casting is thereby achieved. Furthermore, when the framework 11 is made of concrete, possible harmful thermal expansion phenomena are avoided.
Anodeelementet 10 blir festet til en betongflate, til betongarmering eller til andre faste deler av konstruksjonen eller til deler som nyttes under monteringen med rammeverkets II festeinnretninger 15, f.eks. med plastkroker, nagler, tråder, skruer eller lignende. The anode element 10 is attached to a concrete surface, to concrete reinforcement or to other fixed parts of the construction or to parts that are used during assembly with the framework's II attachment devices 15, e.g. with plastic hooks, rivets, threads, screws or the like.
Festeinnretningene 15 som vist i figur IA og IB er fremstilt av armerte betongpinner som blir festet til betongarmeringene i den aktuelle betongarmeringstruktur. The fastening devices 15 as shown in figures IA and IB are made of reinforced concrete pins which are attached to the concrete reinforcements in the relevant concrete reinforcement structure.
Anoden 20 blir plassert i rammeverkets betongstøp, eller anodene 20 blir mekanisk festet, f.eks. ved hjelp av metall-eller plastnagler, skruer, ankere, lister eller lignende til rammeverket 11. The anode 20 is placed in the concrete casting of the framework, or the anodes 20 are mechanically fixed, e.g. using metal or plastic rivets, screws, anchors, strips or the like for the framework 11.
Anoden 20 blir plassert på motsatt side i forhold til rammeverkets 11 festeinnretninger 15. The anode 20 is placed on the opposite side in relation to the framework's 11 fastening devices 15.
Anoden 20 er en netting, tråder, strimler, stenger, plater eller lignende. The anode 20 is a mesh, wires, strips, rods, plates or the like.
Materialet som anvendes i anoden 20 er et komposittmateriale, f.eks. en legering—metallbelagt titan, magnetitt, platinert titan eller en jernblanding, f.eks. ferrosilikon eller grafitt eller et edelmetall, f.eks. platinum eller en ledende plast. The material used in the anode 20 is a composite material, e.g. an alloy—metal-coated titanium, magnetite, platinized titanium or an iron alloy, e.g. ferrosilicon or graphite or a precious metal, e.g. platinum or a conductive plastic.
Som ovenfor beskrevet, kan anodeelementet 10 enten være omfattet av anodens 20 materiale eller av materialet i anoden 20 og et annet materiale forbundet med dette. Flere anode-elementer 10 danner et system ved hjelp av hvilket betong-konstruksjonens ståldeler kan blir katodisk beskyttet. Elektrisitet tilføres anodeelementet 20 f.eks. via en leder 30. Elektrisiteten tilføres separat til hvert anodeelement 20 via en eller flere av dets punkter eller til alle anode-elementer 20 i systemet samlet eller ved hjelp av en kombinasjon av de to ovenfor nevnte separate systemer. As described above, the anode element 10 can either be comprised of the material of the anode 20 or of the material in the anode 20 and another material connected thereto. Several anode elements 10 form a system by means of which the steel parts of the concrete structure can be cathodically protected. Electricity is supplied to the anode element 20 e.g. via a conductor 30. The electricity is supplied separately to each anode element 20 via one or more of its points or to all anode elements 20 in the system together or by means of a combination of the two above-mentioned separate systems.
Rammeverket 11 til anodeelementet er anordnet i en kile-lignende form, slik at bredden til rammeverkets 11 tverr-stykke er større på siden med anode 20 enn siden med festeinnretningene 15, hvorved betongen under støping også kan strømme lett på innsiden av rammeverket. The framework 11 of the anode element is arranged in a wedge-like shape, so that the width of the cross-section of the framework 11 is greater on the side with the anode 20 than the side with the fastening devices 15, whereby the concrete during casting can also flow easily on the inside of the framework.
I samsvar med figur 2 er anodeelementet 10 festet til betongarmeringens ståldeler 50, slik at anodeelementets 10 festeinnretninger 15 er festet til ståldelene 50. Anodeelementet 10 er festet mellom det ytre betongarmeringslag og betongstøpeforskalingen 60 av tre, inn i hvilken betongen 70 støpes. In accordance with Figure 2, the anode element 10 is attached to the steel parts 50 of the concrete reinforcement, so that the anode element 10's fastening devices 15 are attached to the steel parts 50. The anode element 10 is attached between the outer concrete reinforcement layer and the concrete formwork 60 made of wood, into which the concrete 70 is cast.
Som vist i figur 2 blir anodeelementets 10 anoder 20 plassert på den andre siden av rammeverket 11 i forhold til ståldelene 50, hvorved anoden 20 ikke kan komme i kontakt med ståldelene 50. As shown in Figure 2, the anodes 20 of the anode element 10 are placed on the other side of the framework 11 in relation to the steel parts 50, whereby the anode 20 cannot come into contact with the steel parts 50.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI903119A FI87241C (en) | 1990-06-20 | 1990-06-20 | Method of attaching an electrode arrangement used for cathodic protection of concrete structures and fasteners |
| PCT/FI1991/000191 WO1991019829A1 (en) | 1990-06-20 | 1991-06-19 | A method for fixing an electrode arrangement to be used in the cathodic protection of concrete structures and a fixing element |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO920638D0 NO920638D0 (en) | 1992-02-18 |
| NO920638L NO920638L (en) | 1992-02-18 |
| NO305996B1 true NO305996B1 (en) | 1999-08-30 |
Family
ID=8530672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO920638A NO305996B1 (en) | 1990-06-20 | 1992-02-18 | Method of Attaching an Electrode Arrangement for Use in Cathodic Protection of Concrete Structures and Attachment Elements of the Electrode Arrangement |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0487675B1 (en) |
| JP (1) | JP3184215B2 (en) |
| AT (1) | ATE157711T1 (en) |
| AU (1) | AU637246B2 (en) |
| CA (1) | CA2064701A1 (en) |
| DE (1) | DE69127529T2 (en) |
| DK (1) | DK0487675T3 (en) |
| FI (1) | FI87241C (en) |
| NO (1) | NO305996B1 (en) |
| WO (1) | WO1991019829A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2075780C (en) * | 1991-09-23 | 2002-07-30 | Michele Tettamanti | Anode structure for cathodic protection of steel-reinforced concrete and relevant method of use |
| IT1254287B (en) * | 1992-03-13 | 1995-09-14 | Italcementi Spa | CEMENTITIOUS SUPPORT MATERIAL FOR THE CATHODIC PROTECTION OF REINFORCED CONCRETE STRUCTURES |
| JP5918640B2 (en) * | 2012-06-26 | 2016-05-18 | 住友大阪セメント株式会社 | Cathodic protection method |
| CN112681345A (en) * | 2020-12-04 | 2021-04-20 | 中交第一航务工程局有限公司 | Installation process of prefabricated block for framework slope protection |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986006758A1 (en) * | 1985-05-07 | 1986-11-20 | Eltech Systems Corporation | Expanded metal mesh and coated anode structure |
| EP0262835A1 (en) * | 1986-09-16 | 1988-04-06 | RAYCHEM CORPORATION (a California corporation) | Mesh electrodes and clips for use in preparing them |
| GB8809230D0 (en) * | 1988-04-19 | 1988-05-25 | Raychem Ltd | Inhibiting corrosion in reinforced concrete |
| DE3826926A1 (en) * | 1988-08-09 | 1990-02-15 | Heraeus Elektroden | ANODE FOR CATHODIC CORROSION PROTECTION |
-
1990
- 1990-06-20 FI FI903119A patent/FI87241C/en active IP Right Grant
-
1991
- 1991-06-19 EP EP91910909A patent/EP0487675B1/en not_active Expired - Lifetime
- 1991-06-19 DK DK91910909.0T patent/DK0487675T3/en active
- 1991-06-19 WO PCT/FI1991/000191 patent/WO1991019829A1/en active IP Right Grant
- 1991-06-19 AT AT91910909T patent/ATE157711T1/en not_active IP Right Cessation
- 1991-06-19 DE DE69127529T patent/DE69127529T2/en not_active Expired - Fee Related
- 1991-06-19 AU AU80806/91A patent/AU637246B2/en not_active Expired
- 1991-06-19 CA CA002064701A patent/CA2064701A1/en not_active Abandoned
- 1991-06-19 JP JP51072391A patent/JP3184215B2/en not_active Expired - Fee Related
-
1992
- 1992-02-18 NO NO920638A patent/NO305996B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP3184215B2 (en) | 2001-07-09 |
| EP0487675A1 (en) | 1992-06-03 |
| DK0487675T3 (en) | 1998-04-20 |
| NO920638D0 (en) | 1992-02-18 |
| ATE157711T1 (en) | 1997-09-15 |
| AU8080691A (en) | 1992-01-07 |
| JPH05500834A (en) | 1993-02-18 |
| FI903119A0 (en) | 1990-06-20 |
| DE69127529T2 (en) | 1998-02-26 |
| NO920638L (en) | 1992-02-18 |
| WO1991019829A1 (en) | 1991-12-26 |
| AU637246B2 (en) | 1993-05-20 |
| FI903119A (en) | 1991-12-21 |
| EP0487675B1 (en) | 1997-09-03 |
| FI87241C (en) | 1992-12-10 |
| FI87241B (en) | 1992-08-31 |
| CA2064701A1 (en) | 1991-12-21 |
| DE69127529D1 (en) | 1997-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1K | Patent expired |