CN1195897C - Connector for use in cathodic protection and method of use - Google Patents
Connector for use in cathodic protection and method of use Download PDFInfo
- Publication number
- CN1195897C CN1195897C CNB998034355A CN99803435A CN1195897C CN 1195897 C CN1195897 C CN 1195897C CN B998034355 A CNB998034355 A CN B998034355A CN 99803435 A CN99803435 A CN 99803435A CN 1195897 C CN1195897 C CN 1195897C
- Authority
- CN
- China
- Prior art keywords
- anode
- assembly
- metal
- elongated
- stiffener
- 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.)
- Expired - Fee Related
Links
Images
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
- C23F13/20—Conducting electric current to 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
- 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
- C23F13/16—Electrodes characterised by the combination of the structure and the material
-
- 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)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Electrotherapy Devices (AREA)
Abstract
An assembly for use in the cathodic protection of steel reinforcement in reinforced concrete said assembly comprises: (1) an anode of a metal having a more negative electrode potential than steel and, in electrical contact therewith, (2) an elongate electrical connector including a wire made of a ductile metal capable of being wound around the steel reinforcing element to be protected. The anode may be in the form of a block cast around a portion of the length of the elongate connector and preferably the elongate connector comprises a plurality of wires twisted together over a portion of their length with the anode cast around the twisted portion.
Description
FIELD OF THE INVENTION
The present invention relates to use the galvanic protection of the steel bar in reinforced concrete of a sacrificial anode, more particularly, the present invention relates to be used to connect a kind of electric connector of sacrificial anode, and relate to this anodic method of installing to the reinforcing bar of expectation protection.
The background of invention
Sacrificial anode is well-known.In fact, sacrificial anode is to be made of metal, and the sacrificial anode of this metal has the electropotential more negative than the reinforcing bar that will protect, and therefore, it is preferentially corroded than reinforcing bar.In European patent No0707667 and US Patent No 5292411, sacrificial anode has been described.
The problem to be solved in the present invention
Sacrificial anode need be electrically connected on the reinforcing bar that will protect in order to finish its purpose.In the past, the use metallic conductor reaches this project.By previous method, to bore a hole earlier, in the hole, insert a self-tapping screw, so just can be fixed to these metallic conductors (as metal wire) on the reinforcing bar.The other method relates to be used anchor clamps that metal wire is fixed to the metal that will protect to get on.
The problem of these methods is boring and uses anchor clamps to expend time in, and always has the danger of anchor clamps dislocation.
The present invention provides a solution for these problems, promptly uses a kind of elongated junctor of ductile that has, and by twining this junctor around stiffener junctor is connected on the steel stiffener.
The general introduction of invention
According to the present invention, a kind of assembly that is used for the galvanic protection of reinforcing bar in the Steel Concrete is provided, said assembly comprises:
(1) metal anode has the electropotential more negative than reinforcing bar, and electrically contacts with reinforcing bar
(2) elongated electric connector by there being the ductile metal to make, can twine around the steel stiffener that will protect.
The beneficial effect of the invention
Use the method for self-tapping screw to compare with relating to of the past, the time of setting-up of junctor is less, and more reliable than anchor clamps.
The accompanying drawing summary
Fig. 1 is the skeleton view of one embodiment of the present of invention, and two metal wire distortions wherein together;
Fig. 2 is a skeleton view littler than the drawing ratio of Fig. 1, wherein around the metal wire of the junctor anode of having cast; With
Fig. 3 is the skeleton view of another embodiment, and its drawing ratio is identical with Fig. 2, and the mortar that anode has wherein been cast surrounds.
The detailed description of invention
Except can using aluminium, cadmium or magnesium, anode is zinc preferably. These gold that relate to Belong to and comprise the alloy that contains these metals.
Best, provide the electricity between connector and the anode to connect by the form that makes anode become piece Touch, wherein a part of length around elongated connector is cast into (so-called casting, meaning Instigate liquid metal to be solidified into piece) said. Alternatively, by allowing elongated connection Device is wrapped in around the anode, perhaps by connector being welded to or being fixed in a similar manner sun Extremely go up, all can provide to electrically contact.
Elongated connector is the form of metal wire in a traditional way, certainly, can also use other Elongated form. Metal wire can be steel, preferably mild steel in the usual way.
Preferably, the same inertia with reinforcing bar of metal wire is perhaps than reinforcing bar inertia more.
Connector can comprise many at one partial-length distortion metal wire together, sun Extremely can be cast into around the part of distortion. Said term distortion, we mean and comprise folding Folded or crooked or curling. The purpose of wreath piece is the anode shape that increases metal wire and casting Become the surface area at interface, can improve whereby and electrically contact. Metal wire can be between their two ends The centre position (for example, near their mid point of length) distortion together, thereby make Metal wire and length can be extended in the both sides of the anode of casting.
Specifically comprise, will be by metal at least the first or second metal wire that ductility is arranged at it Mid portion position twist between the two ends together, to form the twist part; Around this twist The anode block of part casting is so that at least 4 metal line arms stretch out from this piece.
Patent application No WO94/29496 (european patent application No0707667) has described one Plant cathode protecting process, wherein, in order to maintain the cathodic protection in continual period, sun The electrolytical material of extremely involved high pH surrounds. For fear of anodic passivity, suggestion is at the zinc sun PH in the situation of the utmost point is at least about 14.
The appropriate materials of describing in this patent is cement mortar, and cement mortar can center on anode Cast to form a unit. Mortar is cement mortar, and this is unimportant, but this water Cement mortar be more hold facile. Can prepare mortar from the cement that itself has high alkali content, Perhaps additional alkali is added in the mortar, for example, NaOH or lithium hydroxide, the latter is Preferably.
Anode of the present invention and connector assembly can have porous material, for example around anode casting Cement mortar. So-called casting means and forms a kind of solid from mortar liquid or semi-liquid The body piece. This casting is preferably in the mould to be carried out. Porous material is preferably to comprise such as European patent The electrolytical porous material of the high pH value of describing among the application No0707667, that is, and this porous Material comprises a kind of electrolyte solution, and the pH value of this electrolyte solution is sufficiently high, thereby works as During with anode and the electrical connection of steel reinforcement, can keep the corrosion of anode, avoid shape on anode Become passivating film. In the situation of cement mortar, electrolyte solution is pore solution.
The alkali content of mortar preferably is equivalent at least 1% lithium hydroxide, and said percentage ratio is based on that the dry weight of the composition that is used for making mortar calculates.The equivalent of sodium hydroxide is 2% (weight).Routinely, the quantity of lithium hydroxide is greater than 2%, or the equivalent of sodium hydroxide is 4%.
Lithium hydroxide is preferred alkali, because lithium ion can provide the protection of alkali-resistivity silica (or alkali aggregate) reaction in concrete.But can also use the mixture of alkali, as the mixture of lithium hydroxide and sodium hydroxide.
Anode, porous material (as mortar) and casting can also be as described in european patent application No0707667.
By another aspect of the present invention, a kind of method that sacrificial anode is installed with the stiffener in the protection Steel Concrete is provided, the step (a) that this method bag is following and (b), do not limit in proper order:
(a) between elongated junctor and anode, be electrically connected and
(b) twine elongated junctor around the steel stiffener, realization electrically contacts with the steel stiffener.
Step (a) can comprise the part casting anode around elongated junctor length.
Before or after step (b), can carry out another step (c), this step (c) comprises the porous material that comprises electrolyte solution around anode casting, and the pH value of electrolyte solution is sufficiently high, so that can produce the anodic corrosion, and avoid forming passive film.
Be at least about by expectation in the pH of electrolyte solution value under 14 the situation, anode is zinc preferably.When anode was additional metals such as aluminium, the pH value may be lower, for example is at least 13.3 or 13.5.
The pH value can and utilize following equation to determine by the measurement hydroxyl ion concentration:
PH=14+log (OH
-) (according to Sorensen)
The present invention may be used on new skeleton construction, anode assemblies wherein by means of junctor and around the porous material of the high pH value of anode casting for example mortar be connected to stiffener.
The present invention can also be applied to the protection of existing concrete structure, according to said method, bores a hole in concrete, and (1) insert in the hole anode, (2) be connected to junctor on the stiffener and (3) around the high pH value of anode casting material.The order of step (1), (2), (3) is not limit.
Referring now to accompanying drawing 1, metal wire is a kind of 16SWG (standard wire size) low-carbon (LC) steel wire, and two such lines are partly twisted together in the length at its label 6 places.The length of wreath piece 6 is generally from about 38-42mm.Stretch out 4 branch lines 2,4,8,10 from wreath piece 6.The length of branch line 2,4,8,10 is generally from about 148-152mm, and the end of every branch line forms ring 12,13,14,15.Every branch line all twines around stiffener.Usually, just be enough to produce satisfied electrically contacting around stiffener winding complete 1 circle or two circles.The diameter of ring is generally from 9-11mm.The effect of these rings is such instruments of the paper bag of sealing potato easy to use and so on.A kind of proper tools is spring-loaded ratchet distortion machine, is referred to as the Stanley buncher, can obtain from Direct Wire Ties Limited.By means of instrument, clench centering on the branch line that steel stiffener (not shown) twines in the Steel Concrete.The effect of making is fastened to line around the stiffener like this.
In Fig. 2, around the line of distortion cast about 40mm diameter and the about thick cylindrical spelter 20 of 7mm.In this drawing, in order to represent metal wire, saved the middle body of cylindrical spelter 20.The upper and lower edge of piece 20 is chamfering, breaks preventing.
With the line distortion together, the part with this distortion is placed in the ceramic casting die then, thereby makes assembly shown in Figure 2 near the middle portion of at first online length.Then, fused zinc is poured in the mould.Behind the products solidifying, it is taken out from mould.Branch line 2,4,8,10 extends in the anodic both sides, and if expectation, can make anode be connected to number greater than on 1 the stiffener.
In Fig. 3, the mortar piece 24 of around zinc shown in Figure 2, having cast, the whole thickness that centers on zinc is 10mm.
Thereby the assembly shown in Fig. 3 is by location assembly shown in Figure 2 in being pre-formed the mould of plastics of vacuum the central authorities that zinc is positioned at mould to be made.Comprise pH value and starch by mixing Portland (Portland) finished ground cement (by weight,, containing 2% additional lithium hydroxide) with water and be poured in the mould, preparing greater than the high pH value water silt particle of 14 pore solution based on the weight of finished ground cement.With its sclerosis 4 hours, from mould, take out then, obtain product shown in Figure 3.
Claims (18)
1, a kind of assembly that is used for the galvanic protection of reinforcing bar stiffener in the Steel Concrete, said assembly comprises:
(1) metal anode, it has the electropotential more negative than reinforcing bar;
(2) elongated electric connector, it is through machinery and be electrically connected to this anode and be by there being the ductile metal to make;
It is characterized in that: anode is the bulk form around a part of length formation of elongated junctor.
2, the assembly of claim 1 is characterized in that: elongated junctor is the form of at least a metal wire.
3, the assembly of claim 1 is characterized in that: elongated junctor comprises many twist metal wires together on the one partial-length, forms anode around this wreath piece.
4, the assembly of claim 3 is characterized in that: metal wire at the position of the middle portion at their two ends twist together so that metal wire is stretched along the more than one epitaxial lateral overgrowth of anodic.
5, the assembly of claim 1, it is characterized in that: anode is enclosed in the porous material of anode casting, porous material comprises a kind of electrolyte solution, the pH value of this electrolyte solution is enough high, so that when anode is electrically connected on the Steel Concrete stiffener, the anodic corrosion can take place, and can prevent to form on anode passive film.
6, the assembly of claim 5, it is characterized in that: anode is made by zinc, and porous material is to comprise the sand-cement slurry that the pH value is at least 14 electrolyte solution.
7, the assembly of claim 1, itself and Steel Concrete stiffener are combined, and wherein by twining elongated junctor around described stiffener, described assembly are connected on the described stiffener.
8, the assembly of claim 7 is characterized in that: this elongated junctor comprises that at least one steel with this reinforcing bar stiffener has identical inert or than its metal wire of inert material more.
9, the assembly of claim 8 is characterized in that: this elongated junctor comprises many twist many wires together on the one partial-length, and this anode partly forms around described twist.
10, the assembly of claim 9 is characterized in that: these many wires are at the position twist of the middle portion at its two ends together, so that metal wire is stretched along the more than one epitaxial lateral overgrowth of anodic.
11, a kind of assembly of in the galvanic protection of Steel Concrete stiffener, using, this assembly comprises:
The middle portion position twist of at least the first or second metal wire between its two ends together, to form the twist part;
Center on the anode block that this twist is partly cast, so that at least 4 metal line arms stretch out from this piece; With
It is characterized in that: this metal wire is that the ductile metal is arranged.
12. the assembly of claim 11 is characterized in that: this anode is to be made by zinc, and described metal wire is a mild steel, and this anode is encapsulated in and contains in the honeycombed cement mortar that the pH value is at least 14 electrolyte solution.
13, a kind of manufacturing is used for the method for the assembly of the galvanic protection of reinforcing bar stiffener in the Steel Concrete, and said assembly uses the metal anode that the electropotential more negative than reinforcing bar arranged, and elongated electric connector is by there being the ductile metal to make, and said method comprises:
(a) fusion is used for the anodic metal, and it is in a liquid state;
(b) a part of length with junctor is placed in the mould;
(c) in mould with liquid metal casting anode, form around the metal block of a part of length of elongated electric connector.
14, the method for claim 13, it comprises that further (d) makes the liquid state or the semi liquid state mixture of porous material, said porous material comprises a kind of electrolyte solution, the pH value of this electrolyte solution is enough high, so that on being connected to the steel stiffener time, anodic corrosion can be produced, and passive film can be prevented from anode, to form; (e) around the solid piece that forms mixture from the anode of (c).
15, a kind of method that sacrificial anode is installed with the steel stiffener in the protection Steel Concrete, this method comprises following step, order is not limit:
(a) be electrically connected at sacrificial anode with by having between the metal elongated junctor of ductile;
(b) twine elongated junctor around the steel stiffener, realize electrically contacting between elongated junctor and the steel stiffener; At (b) afterwards
(c) use the twist instrument together, fastening electric connector around stiffener with the end twist of elongated junctor.
16, the method for claim 15 is characterized in that: step (a) be by in containing the mould of connector part with liquid metal casting anode, implement around the metal block of elongated junctor part length thereby form.
17, the method for claim 16, also be included in before or after the step (b), carry out step (c): center on the porous material that anode casting comprises electrolyte solution, the pH value of this electrolyte solution is sufficiently high, so that can produce the anodic corrosion, and avoid forming passive film.
18, the method for claim 17 is characterized in that: employing zinc anode and pH value are at least 14 electrolyte solution implementation step (a)-(c).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9823654.0A GB9823654D0 (en) | 1998-10-29 | 1998-10-29 | Connector for use in cathodic protection and method of use |
| GB9823654.0 | 1998-10-29 | ||
| US09/306419 | 1999-05-06 | ||
| US09/306,419 US6193857B1 (en) | 1998-10-29 | 1999-05-06 | Connector for use in cathodic protection and method of use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1376213A CN1376213A (en) | 2002-10-23 |
| CN1195897C true CN1195897C (en) | 2005-04-06 |
Family
ID=26314583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998034355A Expired - Fee Related CN1195897C (en) | 1998-10-29 | 1999-10-28 | Connector for use in cathodic protection and method of use |
Country Status (18)
| Country | Link |
|---|---|
| EP (1) | EP1042535B1 (en) |
| JP (1) | JP4491139B2 (en) |
| CN (1) | CN1195897C (en) |
| AT (1) | ATE310110T1 (en) |
| AU (1) | AU752647B2 (en) |
| BR (1) | BR9907086B1 (en) |
| CA (1) | CA2316983C (en) |
| CZ (1) | CZ295912B6 (en) |
| DE (1) | DE69928373T2 (en) |
| ES (1) | ES2253931T3 (en) |
| HK (1) | HK1049503B (en) |
| ID (1) | ID26715A (en) |
| NO (1) | NO323184B1 (en) |
| NZ (1) | NZ505421A (en) |
| PL (1) | PL195262B1 (en) |
| TR (1) | TR200002510T1 (en) |
| TW (1) | TW581826B (en) |
| WO (1) | WO2000026439A2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2425778B8 (en) | 2004-07-06 | 2019-05-01 | E Chem Tech Ltd | Protection of reinforcing steel |
| KR101381053B1 (en) | 2005-03-16 | 2014-04-04 | 가렛 그라스 | Treatment process for concrete |
| JP2006336072A (en) * | 2005-06-02 | 2006-12-14 | Tokyo Electric Power Co Inc:The | Simple corrosion-preventing device |
| CN101517405B (en) * | 2006-09-11 | 2013-02-27 | Vsl国际股份公司 | Method and sensor for determining passivation property of mixture containing at least concrete and water |
| JP4772642B2 (en) * | 2006-10-20 | 2011-09-14 | 電気化学工業株式会社 | Electrochemical treatment of concrete floor slabs on asphalt paved roads |
| ES2745534T3 (en) | 2012-07-30 | 2020-03-02 | Construction Research & Technology Gmbh | Galvanic anode and corrosion protection procedure |
| CN104532259B (en) * | 2014-12-26 | 2017-10-20 | 青岛双瑞海洋环境工程股份有限公司 | The composite electrochemical device protected for condenser pipe series cathode |
| CN110467378B (en) * | 2019-08-05 | 2021-11-09 | 西安建筑科技大学 | Concrete with structure and corrosion control function integrated |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3434222A1 (en) * | 1984-09-18 | 1986-03-20 | Roth, Manfred, Dipl.-Volksw., 3563 Dautphetal | Corrosion protection device for fuel oil tanks made of sheet steel |
| DE3826926A1 (en) * | 1988-08-09 | 1990-02-15 | Heraeus Elektroden | ANODE FOR CATHODIC CORROSION PROTECTION |
| GB9312431D0 (en) * | 1993-06-16 | 1993-07-28 | Aston Material Services Ltd | Improvements in and relating to protecting reinforced concrete |
-
1999
- 1999-10-28 AU AU13938/00A patent/AU752647B2/en not_active Expired
- 1999-10-28 CA CA002316983A patent/CA2316983C/en not_active Expired - Fee Related
- 1999-10-28 DE DE69928373T patent/DE69928373T2/en not_active Expired - Lifetime
- 1999-10-28 NZ NZ505421A patent/NZ505421A/en not_active IP Right Cessation
- 1999-10-28 CN CNB998034355A patent/CN1195897C/en not_active Expired - Fee Related
- 1999-10-28 JP JP2000579806A patent/JP4491139B2/en not_active Expired - Fee Related
- 1999-10-28 PL PL99348189A patent/PL195262B1/en not_active IP Right Cessation
- 1999-10-28 EP EP99971473A patent/EP1042535B1/en not_active Expired - Lifetime
- 1999-10-28 AT AT99971473T patent/ATE310110T1/en not_active IP Right Cessation
- 1999-10-28 BR BRPI9907086-3A patent/BR9907086B1/en not_active IP Right Cessation
- 1999-10-28 TR TR2000/02510T patent/TR200002510T1/en unknown
- 1999-10-28 WO PCT/GB1999/003517 patent/WO2000026439A2/en active IP Right Grant
- 1999-10-28 ES ES99971473T patent/ES2253931T3/en not_active Expired - Lifetime
- 1999-10-28 CZ CZ20002437A patent/CZ295912B6/en not_active IP Right Cessation
- 1999-10-28 ID IDW20001266A patent/ID26715A/en unknown
- 1999-10-28 TW TW088118633A patent/TW581826B/en not_active IP Right Cessation
-
2000
- 2000-06-28 NO NO20003386A patent/NO323184B1/en not_active IP Right Cessation
-
2003
- 2003-03-05 HK HK03101631.0A patent/HK1049503B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000026439A3 (en) | 2000-10-19 |
| CA2316983C (en) | 2007-01-09 |
| CN1376213A (en) | 2002-10-23 |
| HK1049503B (en) | 2005-11-18 |
| BR9907086A (en) | 2000-10-17 |
| HK1049503A1 (en) | 2003-05-16 |
| ATE310110T1 (en) | 2005-12-15 |
| CZ295912B6 (en) | 2005-11-16 |
| WO2000026439A2 (en) | 2000-05-11 |
| CA2316983A1 (en) | 2000-05-11 |
| JP2002528647A (en) | 2002-09-03 |
| AU752647B2 (en) | 2002-09-26 |
| CZ20002437A3 (en) | 2001-07-11 |
| JP4491139B2 (en) | 2010-06-30 |
| NO20003386L (en) | 2000-08-24 |
| NO323184B1 (en) | 2007-01-15 |
| TR200002510T1 (en) | 2001-04-20 |
| NO20003386D0 (en) | 2000-06-28 |
| ES2253931T3 (en) | 2006-06-01 |
| PL348189A1 (en) | 2002-05-06 |
| EP1042535B1 (en) | 2005-11-16 |
| BR9907086B1 (en) | 2009-08-11 |
| NZ505421A (en) | 2002-11-26 |
| AU1393800A (en) | 2000-05-22 |
| ID26715A (en) | 2001-02-01 |
| DE69928373T2 (en) | 2006-08-03 |
| PL195262B1 (en) | 2007-08-31 |
| EP1042535A1 (en) | 2000-10-11 |
| DE69928373D1 (en) | 2005-12-22 |
| TW581826B (en) | 2004-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100632021B1 (en) | Connector for use in cathodic protection and method of use | |
| AU678484B2 (en) | Cathodic protection of reinforced concrete | |
| CA2392818C (en) | Improvement in cathodic protection system | |
| CN1195897C (en) | Connector for use in cathodic protection and method of use | |
| WO1989010435A1 (en) | Inhibiting corrosion in reinforced concrete | |
| US7488410B2 (en) | Anode assembly for cathodic protection | |
| US8157983B2 (en) | Composite anode for cathodic protection | |
| EP1444382A1 (en) | Cathodic protection system | |
| EP3227471B1 (en) | Method for cathodic protection of a steel member in concrete | |
| US6958116B1 (en) | Cathodic protection system | |
| CA2342620C (en) | Method of electrochemical treatment of prestressed concrete | |
| WO2008118589A1 (en) | Composite anode for cathodic protection | |
| CA2681232A1 (en) | Composite anode for cathodic protection | |
| Schupack | Unbonded performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050406 Termination date: 20181028 |