Electrochemical corrosion apparatus and electrochemical corrosion method of reinforcing steel bar in seawater full immersion zone reinforced concrete

A reinforced concrete, electrochemical technology, applied in the field of anti-corrosion and system, can solve the problem of high cost

Active Publication Date: 2015-11-18
DALIAN UNIV OF TECH
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Problems solved by technology

However, due to the limitation of underwater construction conditions and high costs, it is necessary for us to invent a new method tha

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  • Electrochemical corrosion apparatus and electrochemical corrosion method of reinforcing steel bar in seawater full immersion zone reinforced concrete
  • Electrochemical corrosion apparatus and electrochemical corrosion method of reinforcing steel bar in seawater full immersion zone reinforced concrete
  • Electrochemical corrosion apparatus and electrochemical corrosion method of reinforcing steel bar in seawater full immersion zone reinforced concrete

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[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention:

[0037] like Figure 1-Figure 8 shown:

[0038] The present invention proposes a new method to consume the oxygen in the area near the steel bars in the water to prevent the steel bars from corroding.

[0039] A conductive low carbon steel mesh 1 is placed near the concrete surface as a cathode, a titanium electrode 2 is used as an auxiliary anode, and a DC power supply 3 is used for power supply respectively. Together with seawater they form an electrochemical oxygen filter such as figure 1 shown.

[0040] During energization, a mild steel mesh located near the concrete surface acts as a cathode, where oxygen is converted into hydroxide-producing i...

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Abstract

The present invention discloses an electrochemical corrosion apparatus of reinforcing steel bar in seawater full immersion zone reinforced concrete. The electrochemical corrosion apparatus comprises a cathode for making dissolved oxygen in seawater obtain electron, an auxiliary anode and a direct current power supply, wherein the cathode, the auxiliary anode and seawater form an electrochemical oxygen filter after electrifying, the oxygen close to the concrete surface is converted into hydroxide radicals and/or hydrogen peroxide ions through the cathode, and the chlorine ions in the seawater move to close to the auxiliary anode under the effect of electric field force and generate chlorine gas under the effect of the auxiliary anode. According to the present invention, with the technical scheme, the dissolved oxygen in the reinforcing steel bar surface region is eliminated while the chlorine ions in the reinforcing steel bar surface passivation film can be damaged, such that the reinforcing steel bar can be used in the seawater for a long time; and during the diffusion process of the dissolved oxygen to the concrete structure, when the dissolved oxygen passes through the electrified low carbon steel net, the dissolved oxygen can be transferred to the carbon steel net surface as more as possible so as to be consumed, such that the oxygen is prevented from reaching the reinforcing steel bar surface.

Description

technical field [0001] The invention proposes an electrochemical-based anti-corrosion system aimed at steel bar corrosion in concrete structures in seawater immersion areas. Plating of metal materials involving patent classification number C23; plating of materials with metal materials; surface chemical treatment; diffusion treatment of metal materials; general plating by vacuum evaporation, sputtering, ion implantation or chemical vapor deposition Coating; general inhibition of corrosion or fouling of metallic materials C23F Removal of metallic materials from surfaces by non-mechanical means C23F13 / 00 Protection of metals from corrosion by anodic or cathodic protection. Background technique [0002] As an important building material, reinforced concrete is widely used in cross-sea bridges. In the marine environment, reinforced concrete structures will suffer serious damage due to corrosion. Because the splash zone is in a high-salinity environment with alternating wet and...

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Application Information

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IPC IPC(8): C23F13/06
Inventor 黄一杨璐嘉曹亚洲宋世德
Owner DALIAN UNIV OF TECH
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