Device and method for controlling chloride ion permeation of reinforced concrete

Abstract

The invention discloses a device and method for controlling chloride ion permeation of reinforced concrete. The device comprises a concrete protection layer and a cathode protection loop, and furthercomprises a monitoring circuit and a porous absorption layer arranged between the concrete protection layer and a protected concrete main body, wherein a liquid inlet is formed in the lower part of the porous absorption layer, and a liquid outlet is formed in the upper part of the porous absorption layer; the monitoring circuit comprises a monitoring power supply; and the two ends of the monitoring power supply are respectively connected with the two ends of another reinforcing steel bar except the protected reinforcing steel bar in the protected concrete main body. The device can directionally move and remove harmful chloride ions in the reinforced concrete and the protection device at the same time, so that the purposes of recovering the function of the reinforced concrete structure andprolonging the service life of the reinforced concrete structure and the service life of an anode of the protection device are achieved. The device is low in energy consumption and simple and convenient to mount; the protection current does not need to be continuously started, so that over-protection of the reinforced concrete structure can be effectively avoided; and the damage to the anode in the using process is reduced, and regular replacement is not needed.

Description

technical field [0001] The invention relates to the technical field of reinforced concrete anticorrosion, in particular to a device and a method for controlling chloride ion penetration of reinforced concrete. Background technique [0002] The reinforced concrete structure in the marine environment is directly exposed to a high-concentration chloride ion environment, and the chloride ions with strong penetrability pass through the surface concrete to reach the surface of the steel bar, and the chloride ion concentration on the surface of the steel bar in the concrete gradually rises to a critical value, destroying The passivation film of the steel bar is formed, and the steel bar is corroded under the condition of water and oxygen. The corroded part of the steel bar causes the degradation of the bonding performance of the concrete and the steel bar, the peeling of the concrete protective layer, the decline of the bearing capacity of the component and the deterioration of the ...

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Problems solved by technology

The patent application requires continuous power supply, and the protection system is relatively complicated. Maintenance and management are required, otherwise the protection system will easily fail.

[0008] At present, the main consideration in the relevant patents is to protect the steel bars in the concrete of the current cathode through the applied current, but the anode still needs to be replaced and maintained regularly, and the protection system is complicated to use, so the durability and practicability of the protection device will be greatly affected

In addition, the existing patents do not consider the removal of chloride ions during the use of the protection device, so that the protection device must continuously open the protection current to accelerate the destruction of the anode of the protection device

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