Apparatus and method for controlling chloride ion penetration in reinforced concrete
A chloride ion infiltration, reinforced concrete technology, applied in construction, artificial island, infrastructure engineering and other directions, can solve the problems of failure of protection system, complex protection system, durability and practicability of protection devices, etc. The effect of reducing the risk rate and easy installation
Active Publication Date: 2021-08-27
HOHAI UNIV
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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
Method used
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Embodiment 1
[0068] The present embodiment provides a kind of device and method for controlling chloride ion penetration of reinforced concrete, see figure 1 , the device mainly includes a conductive anode 1, a concrete protection layer 2, a surface protection layer 3, a porous absorption layer 4, a liquid inlet 5, a liquid outlet 6, a first power supply 7, a power switch 8, a monitoring power supply 9, and a protected concrete body 10 and conductive cathode 11. The specific implementation steps are as follows:
[0069] Chisel off a small part of the protected concrete body 10 and expose the conductive cathode 11 (a reinforced steel bar to be protected), and wires are welded to the tops of the two conductive cathodes 11 (a reinforced steel bar to be protected and any other steel bar), and The bottom end of one of them (another of the above-mentioned arbitrary steel bars) is also welded with a lead and connected to the monitoring power supply 9, and then fills the chiseled part with cement...
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The invention discloses a device and a method for controlling chloride ion penetration of reinforced concrete. The device includes a concrete protection layer and a cathodic protection circuit, and also includes a monitoring circuit, a porous absorption layer arranged between the concrete protection layer and the protected concrete body, the lower part of the porous absorption layer is provided with a liquid inlet, and the upper part is provided with an outlet. The liquid port, the monitoring circuit includes a monitoring power supply, and the two ends of the monitoring power supply are respectively used to connect with the two ends of another steel bar in the protected concrete body except the protected steel bar. The structure can simultaneously move and remove harmful chloride ions in the reinforced concrete and the protective device in a directional manner, thereby achieving the purpose of restoring the function of the reinforced concrete structure and prolonging the service life of the anode in the reinforced concrete structure and the protective device. The device of the invention has low energy consumption and is easy to install; it does not need to uninterruptedly turn on the protection current, which can effectively avoid over-protection of the reinforced concrete structure; it reduces the damage to the anode during use and does not need to be replaced regularly.
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 ...
Claims
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IPC IPC(8): C23F13/06C23F13/22E02B17/00
CPCC23F13/06C23F13/22E02B17/0026
Inventor 张研倪旭晖赵亚洲陈达
Owner HOHAI UNIV