Anode, corrosion-protecting structure for concrete constructions using this, and corrosion protection method

Patent metadata

Field	Value
Publication number	US-9315906-B2
Application number	US-201214240570-A
Country	US
Kind code	B2
Filing date	Aug 24, 2012
Priority date	Aug 26, 2011
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

To provide an anode, corrosion-protecting structure of a concrete constructions using this, and a corrosion protection method capable of protecting electrical corrosion, with little generation of gas due to electrolysis of water or chlorine compounds, by decreasing as far as possible the amount of processing performed on the structural body in on-site construction work and suppressing the voltage that is conducted therethrough to a low level. [Solution] A corrosion-protecting structure ( 1 ) is constituted by attaching an anode ( 10 ) to the surface layer ( 3 ) of a corrosion-protecting body ( 4 ) through a first electrolyte layer ( 12 ) on one face of a conductive layer ( 11 ) formed as a sheet. The electrolyte is formed as a sheet. The first electrolyte layer ( 12 ) having adhesiveness is attached to the conductive layer ( 11 ) and the surface layer ( 3 ) of the corrosion-protecting body ( 4 ).

First claim

What is claimed is:

1. An anode comprising:
a conductive layer formed as a sheet, said conductive layer being formed with a multiplicity of gas permeable apertures in the form of through-holes; and
a first electrolyte layer formed as a sheet and having adhesive power possible to attach to said conductive layer and a surface layer of an object to be protected from corrosion,
wherein the first electrolyte layer is attached to one surface of the conductive layer,
wherein the conductive layer is made of carbon powder or graphite sheet material,
wherein the gas permeable apertures are linear through-holes having a diameter of 0.1 to 1 mm.

2. The anode according to claim 1 , wherein the conductive layer is supported by a base of fiber or a base of film.

3. The anode according to claim 1 , wherein a second electrolyte layer is formed into a sheet and has adhesive power to enable the second electrolyte layer to be attached to the other surface of the conductive layer opposite the first electrolyte layer.

4. The anode according to claim 1 , wherein the outside of the conductive layer is covered with a protection layer.

5. The anode according to claim 3 , wherein the outside of the second electrolyte layer is covered with a protection layer.

6. A corrosion protection structure for concrete constructions, wherein the anode according to claim 1 is attached to a surface of concrete constructions by using the first electrolyte layer, the conductive layer of the anode is connected to a positive electrode of an external power supply, and a negative electrode of the external power supply is connected to the object to be protected from corrosion.

7. The anode according to claim 2 , wherein the conductive layer is supported by a base of fiber made of a polymeric composition.

8. The anode according to claim 7 , wherein the base of fiber is cross-linked.

9. An anode comprising:
a conductive layer formed as a sheet, said conductive layer being formed with a multiplicity of gas permeable apertures in the form of through-holes; and
a first electrolyte layer formed as a sheet and having adhesive power possible to attach to said conductive layer and a surface layer of an object to be protected from corrosion, wherein:
the first electrolyte layer is attached to one surface of the conductive layer;
the conductive layer includes carbon powder;
the carbon powder is applied to a base of polymeric fiber,
wherein the gas permeable apertures are linear through-holes having a diameter of 0.1 to 1 mm.

10. The anode according to claim 9 , wherein the base of polymeric fiber is cross-linked.

Assignees

• Ishikawa Yasuto
• Yamamoto Shirou
• Iiduka Hirokazu
• Suzuki Jun
• Nakamura Tsutomu
• Mimura Norimasa
• FUTAKI Yuichi
• Fujimori Kogyo Co Ltd

Inventors

• Ishikawa Yasuto
• Yamamoto Shirou
• Iiduka Hirokazu
• Suzuki Jun
• Nakamura Tsutomu
• Mimura Norimasa
• FUTAKI Yuichi

Classifications

• C23F13/06 Primary

  Constructional parts, or assemblies of cathodic-protection apparatus · CPC title

• C23F2213/22

  characterized by the ionic conductor, e.g. humectant, hydratant or backfill · CPC title

• E04C5/015

  Anti-corrosion coatings or treating compositions, e.g. containing waterglass or based on another metal (coating of discrete reinforcing elements C04B20/10) · CPC title

• C23F13/16

  Electrodes characterised by the combination of the structure and the material · CPC title

• C23F13/005 Primary

  Anodic protection · CPC title