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Cathode for preventing corrosion, and concrete structure corrosion prevention structure and corrosion prevention method employing same

A concrete structure, anti-corrosion technology, applied in the direction of basic structure engineering, chemical instruments and methods, hydraulic material layered products, etc., to achieve the effect of uniform potential distribution and easy manufacture

Active Publication Date: 2016-11-23
FUJIMORI KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the invention of Patent Document 2, since the anode is manufactured in a factory and installed on site, it is only necessary to attach the sheet-shaped carbon material to the surface of the concrete with an electrolyte layer, so the installation of the anode is extremely easy

Method used

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  • Cathode for preventing corrosion, and concrete structure corrosion prevention structure and corrosion prevention method employing same
  • Cathode for preventing corrosion, and concrete structure corrosion prevention structure and corrosion prevention method employing same
  • Cathode for preventing corrosion, and concrete structure corrosion prevention structure and corrosion prevention method employing same

Examples

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Effect test

Embodiment

[0198] Hereinafter, the present invention will be specifically described using examples.

[0199] The anticorrosion anode 10 of Example 1 was produced in the following procedure.

[0200] With dry lamination, the thickness is about 0.25 ~ 0.3mm, and the mass per unit area is 50g / m 2 A reinforcement layer 14 made of PP nonwoven fabric with a width of 460 mm and a length of 1000 mm is laminated on a conductive layer 11 made of a graphite sheet made by an expansion method with a thickness of 0.125 mm, a width of 340 mm, and a length of 1000 mm.

[0201] The obtained laminated body of the conductive layer 11 and the reinforcement layer 14 was punched from the side of the conductive layer 11 with a hot needle to form a plurality of through-holes 16 in the conductive layer 11 and the reinforcement layer 14 .

[0202] A polyvinyl fluoride film with a thickness of 40 μm and a width of 460 mm was dry-laminated on the surface of the conductive layer 11 on which the reinforcement layer ...

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Abstract

The present invention is a cathode for preventing corrosion, by means of an external power supply in which a reinforcing layer comprising a fiber base material is laminated by an adhesive layer to one surface of a conductive layer comprising a graphite sheet, and an electrolyte layer of an electrolyte-containing resin formed into a sheet profile and having adhesive power such that the layer is capable of adhesion to the conductor layer and to the surface layer of a body targeted for corrosion prevention is adhered through the adhesive power thereof to the other surface of the conductor layer, wherein the conductor layer at all times has a resistance value of 4 OMEGA or less between any two points on the surface on the side thereof that contacts the electrode layer.

Description

technical field [0001] The present invention relates to an anticorrosion anode used for anticorrosion of steel bars covered with a concrete layer, an anticorrosion structure of a concrete structure using the anticorrosion anode, and a method for anticorrosion of a concrete structure. this application claims priority based on Japanese Patent Application No. 2014-071412 for which it applied to Japan on March 31, 2014, and uses the content here. Background technique [0002] There is known an electrical anti-corrosion method in which a current is passed from an electrode (anode) installed near the surface of concrete to a steel material such as a steel bar in the concrete, thereby lowering the potential of the steel material to a potential at which corrosion does not occur, thereby suppressing the corrosion of the steel material. Corrosion proceeds. As electrical corrosion protection, an external power supply method and a sacrificial anode (Galvanic anode) are known. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/16C23F13/02
CPCC23F13/06C23F13/08C23F2201/02C23F2213/22B32B5/02B32B5/022B32B7/06B32B7/12B32B13/04B32B13/12B32B27/06B32B27/12B32B3/266B32B2250/44B32B2255/10B32B2255/26B32B2260/021B32B2260/046B32B2262/0253B32B2262/106B32B2307/202B32B2307/714B32B2307/724B32B2307/7242B32B2307/748B32B2307/752B32B2457/18B32B2571/00C23F13/16C23F13/02E02D31/00E04B1/62
Inventor 铃木润石川康登饭冢宏和中村勉三村典正二木有一
Owner FUJIMORI KOGYO CO LTD
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