JPS62287086A - Method for preventing corrosion of reinforcing bar in reinforced concrete structure - Google Patents
Method for preventing corrosion of reinforcing bar in reinforced concrete structureInfo
- Publication number
- JPS62287086A JPS62287086A JP61128185A JP12818586A JPS62287086A JP S62287086 A JPS62287086 A JP S62287086A JP 61128185 A JP61128185 A JP 61128185A JP 12818586 A JP12818586 A JP 12818586A JP S62287086 A JPS62287086 A JP S62287086A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- reinforcing bars
- concrete structure
- cathode
- reinforced concrete
- 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.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 13
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 12
- 238000005260 corrosion Methods 0.000 title claims abstract description 11
- 230000007797 corrosion Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 239000004567 concrete Substances 0.000 abstract description 10
- 150000003839 salts Chemical class 0.000 abstract description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052801 chlorine Inorganic materials 0.000 abstract description 3
- 239000000460 chlorine Substances 0.000 abstract description 3
- -1 chlorine ions Chemical class 0.000 abstract description 3
- 229910001316 Ag alloy Inorganic materials 0.000 abstract description 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 2
- LWUVWAREOOAHDW-UHFFFAOYSA-N lead silver Chemical compound [Ag].[Pb] LWUVWAREOOAHDW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 239000010936 titanium Substances 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 2
- 238000002386 leaching Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Building Environments (AREA)
- Reinforcement Elements For Buildings (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明〕
（産業上の利用分野）
本発明は鉄筋コンクリート構造物における鉄筋の塩分に
対する防蝕方法に係るものである。[Detailed Description of the Invention] 3. Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for protecting reinforcing bars from salt in reinforced concrete structures.
（従来の技術）及び（発明が解決しようとする問題点）
近年、鉄筋コンクリート構造物におけるコンクリート骨
材として海砂等が使用されるのに伴って、同海砂に含有
される塩分によって鉄筋が腐蝕し、構造物に重大な被害
を生じることが問題視されているが、これに対して有効
な対策が講じられておらず、塩分に対する鉄筋の適切な
防蝕方法の出現が要望されている。(Prior art) and (Problem to be solved by the invention)
In recent years, as sea sand has been used as concrete aggregate in reinforced concrete structures, it has become a problem that the salt contained in the sea sand corrodes the reinforcing bars and causes serious damage to the structures. However, no effective countermeasures have been taken against this problem, and there is a need for an appropriate corrosion protection method for reinforcing bars against salt.
（問題点全解決するための手段）
本発明はこのような問題点を解決するために提案された
鉄筋コンクリート構造物における鉄筋の防蝕工法に係９
、鉄筋コンクリート構萱物内に不溶性電極を埋設し、同
電極を陽極とし、鉄筋全陰極として両者間に直流電圧全
加えて防蝕電流を流すことによって、前記問題点を解法
するものである。(Means for solving all problems) The present invention relates to a method for corrosion prevention of reinforcing bars in reinforced concrete structures proposed to solve these problems.
This method solves the above problem by burying an insoluble electrode in a reinforced concrete structure, using the electrode as an anode, and using the reinforcing steel as a total cathode to apply a full direct current voltage between the two to flow anti-corrosion current.
（作用）
本発明においては前記したように、埋設された不溶性電
極を陽極とし、鉄筋を陰極として両者間に直流電圧音訓
えるものであり、この際コンクリートは水と塩分とを含
んでいるので前記両者間に直流電流が流れる。(Function) As described above, in the present invention, a buried insoluble electrode is used as an anode and a reinforcing steel is used as a cathode to apply a DC voltage sound between the two. At this time, since concrete contains water and salt, A direct current flows between the two.
而して前記陽極は不溶性であるのでコンクリート中に溶
出することがなく、鉄筋は陰極であるから陽イオンとし
て溶出することがなく、鉄筋の周囲に塩素イオンと水と
空気とが存在しても腐蝕電池全形成することがない。Since the anode is insoluble, it will not elute into the concrete, and since the reinforcing steel is a cathode, it will not elute as cations, even if chlorine ions, water, and air exist around the reinforcing steel. Corrosion will never form a battery.
（実施例〉 以下本発明を図示の実施例について説明する。(Example> The present invention will be described below with reference to the illustrated embodiments.
（１）は鉄筋コンクリ）構造物における鉄筋、（２）は
骨材として海砂等を使用したコンクリートである。(1) is reinforced concrete) reinforcing bars in structures, and (2) is concrete using sea sand or the like as aggregate.
前記コンクリート（２）中に、磁性酸化鉄、珪素鋳鉄、
鉛−銀合金、白金メッキチタン等の不溶性の電極（３）
全埋設し、同電極（３）全陽極とし、鉄筋（２）全陰極
として直流電圧をかける。In the concrete (2), magnetic iron oxide, silicon cast iron,
Insoluble electrodes such as lead-silver alloy and platinum-plated titanium (3)
Fully buried, the same electrode (3) is used as an anode, and the reinforcing steel (2) is used as a cathode and a DC voltage is applied.
この際、コンク！Ｊ−） （２１には水と塩分とが存在
するので、前記電極（３）及び鉄筋（２）間には直流電
流が流れる。At this time, Conch! J-) (Since water and salt exist in 21, a direct current flows between the electrode (3) and the reinforcing bar (2).
図中（４）は電源、（５）は銅線に絶縁被覆を施した導
線である。In the figure, (4) is a power supply, and (5) is a conductor wire made of copper wire coated with insulation.
而して陽極となる前記電極（３）は不溶性であるからコ
ンクリート中に溶出することなく、鉄筋（１）は陰極で
あるから周辺に塩素イオンと空気とが存在しても腐蝕電
池を形成することがない。Since the electrode (3) which serves as the anode is insoluble, it does not dissolve into the concrete, and since the reinforcing steel (1) is the cathode, it forms a corrosion cell even if chlorine ions and air exist around it. Never.
（発明の効果）
本発明によれば前記したように、鉄筋コンクリート構造
物内に陽極を構成する不溶性電極を埋設するとともに、
鉄筋を陰極として同鉄と前記不溶性電極との間に直流電
圧を加えることによって防蝕電流を流し、鉄筋コンクリ
ート構造物に埋設された鉄筋の塩分による腐蝕全防止す
るものである。(Effects of the Invention) According to the present invention, as described above, an insoluble electrode constituting an anode is buried in a reinforced concrete structure, and
By applying a direct current voltage between the reinforcing steel and the insoluble electrode using the reinforcing steel as a cathode, a corrosion-preventing current is passed, completely preventing corrosion of the reinforcing steel embedded in a reinforced concrete structure due to salt.
第１図は本発明に係る鉄筋コンクリート構造物における
鉄筋の防蝕方法の一実施例の笑施状況を示す横断平面図
である。
（１）・・・鉄筋、（２）・・・コンクリート、（３）
・・・不溶性電極、 （４）・・・電源、（５）
・・・導線FIG. 1 is a cross-sectional plan view showing the implementation status of one embodiment of the method for preventing corrosion of reinforcing bars in a reinforced concrete structure according to the present invention. (1)...Reinforcement, (2)...Concrete, (3)
...Insoluble electrode, (4) ...Power supply, (5)
・・・Conductor
Claims (1)
極を陽極とし、鉄筋を陰極として両者間に直流電圧を加
えて防蝕電流を流すことを特徴とする鉄筋コンクリート
構造物における鉄筋の防蝕方法。A method for preventing corrosion of reinforcing bars in a reinforced concrete structure, characterized by burying an insoluble electrode in the reinforced concrete structure, using the electrode as an anode, and using the reinforcing steel as a cathode, applying a DC voltage between the two to flow a corrosion protection current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61128185A JPS62287086A (en) | 1986-06-04 | 1986-06-04 | Method for preventing corrosion of reinforcing bar in reinforced concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61128185A JPS62287086A (en) | 1986-06-04 | 1986-06-04 | Method for preventing corrosion of reinforcing bar in reinforced concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62287086A true JPS62287086A (en) | 1987-12-12 |
Family
ID=14978538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61128185A Pending JPS62287086A (en) | 1986-06-04 | 1986-06-04 | Method for preventing corrosion of reinforcing bar in reinforced concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62287086A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02277785A (en) * | 1989-04-19 | 1990-11-14 | Nakagawa Boshoku Kogyo Kk | Method for setting insoluble electrode in concrete structure |
| JPH08502387A (en) * | 1992-10-14 | 1996-03-12 | ナショナル パワー ピーエルシー | Electrochemical device for energy storage and power distribution using iron-sulfur couple |
| KR20030088807A (en) * | 2002-05-15 | 2003-11-20 | 주식회사 효원종합건설 | Cathodic protection repairing method of concrete structures using zinc sacrificial anode and mortar composition for coating zinc sacrificial anode |
| JP2013544989A (en) * | 2010-10-12 | 2013-12-19 | スヴェンスク セラーメリング ファブリク アクチエボラグ | Reinforcing element for casting including ring-shaped part and reinforcing material using such reinforcing element |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621571A (en) * | 1980-07-01 | 1981-02-28 | Fukushima Hiroo | White seasoning solution and its preparation |
-
1986
- 1986-06-04 JP JP61128185A patent/JPS62287086A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5621571A (en) * | 1980-07-01 | 1981-02-28 | Fukushima Hiroo | White seasoning solution and its preparation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02277785A (en) * | 1989-04-19 | 1990-11-14 | Nakagawa Boshoku Kogyo Kk | Method for setting insoluble electrode in concrete structure |
| JPH08502387A (en) * | 1992-10-14 | 1996-03-12 | ナショナル パワー ピーエルシー | Electrochemical device for energy storage and power distribution using iron-sulfur couple |
| KR20030088807A (en) * | 2002-05-15 | 2003-11-20 | 주식회사 효원종합건설 | Cathodic protection repairing method of concrete structures using zinc sacrificial anode and mortar composition for coating zinc sacrificial anode |
| JP2013544989A (en) * | 2010-10-12 | 2013-12-19 | スヴェンスク セラーメリング ファブリク アクチエボラグ | Reinforcing element for casting including ring-shaped part and reinforcing material using such reinforcing element |
| US9758967B2 (en) | 2010-10-12 | 2017-09-12 | Svensk Cellarmering Fabrik Ab | Reinforcement element for casting comprising ring shaped portions and reinforcement with such reinforcement elements |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9598778B2 (en) | Treatment process for concrete | |
| KR20010033749A (en) | connector for use in cathotic protection and method of use | |
| CN104508188A (en) | Galvanic anode and method of corrosion protection | |
| JP2015525832A5 (en) | ||
| US6958116B1 (en) | Cathodic protection system | |
| JP2783957B2 (en) | How to passivate steel in concrete | |
| JPS62287086A (en) | Method for preventing corrosion of reinforcing bar in reinforced concrete structure | |
| JP4491139B2 (en) | Electrical corrosion protection connector and method of use | |
| CN104611707A (en) | Cathode protection method of underground pipeline and cathode protection device | |
| JPH02200787A (en) | Electric corrosion protection method using together with galvanic anode system and external power source system | |
| JP3798189B2 (en) | Repair method for concrete structures | |
| JP3521195B2 (en) | Method for preventing corrosion of steel material of mortar or concrete member and material for preventing corrosion of steel material used therefor | |
| GB2175609A (en) | Electrode | |
| JP4151254B2 (en) | Reinforced concrete anticorrosion system | |
| JP4015933B2 (en) | Method for manufacturing concrete structure | |
| KR20130045484A (en) | Intermittent cathodic protection method for concrete structure, intermittent cathodic protection system for concrete structure and intermittent cathodic protection system for nuclear structure | |
| JP2649090B2 (en) | Desalination method for RC / SRC structure | |
| JPH07331467A (en) | Electrolytic protection method of reinforcing bar in concrete | |
| JPS6473094A (en) | Method for preventing corrosion of steel structure in seawater | |
| JPH04297643A (en) | Reinforced concrete structure and structural member, and electric protection method for reinforced concrete | |
| JP2000026174A (en) | Method for preventing corrosion of reinforcing bar in concrete | |
| JP2017014567A (en) | Monitoring method for sacrificial anode construction method in concrete structure | |
| JPS60262605A (en) | Conduction curing method of reinforced concrete | |
| JPS609887A (en) | Electrolytic protection method of underground buried material | |
| JPH06235080A (en) | Corrosion preventive method for concrete structure by thermally sprayed metallic film |