Electric field salt rejection protective system protected by reinforced concrete structure in chloride environment

Abstract

The invention discloses an electric field salt rejection protective system protected by a reinforced concrete structure in chloride environment, which is provided with an anode arranged on the surface layer of the concrete structure and an anode cable connected on the anode; the reinforcement in the concrete is used as a cathode and is provided with a cathode cable connected on the reinforcement and simultaneously provided with a direct-current power supply. The invention is characterized in that the output voltage of the direct-current power supply between the anode and the cathode is 0.5-1V; and the current density in the reinforcement is 0.3-0.7mA / m<2>. The new corrosion guard introduced by the invention provides a new electric field salt rejection system aiming at the essence that chloride in external environment invades concrete to cause reinforcement corrosion; aiming at the new reinforced concrete structure in chlorine environment, the adoption of the system can effectively prevent chloridions from penetrating into the environment, thus achieving the purpose of protecting durable non-corrosion on the internal reinforcement. The electric field salt rejection system has simple constitution, good salt rejection effect and long protective service life, and is convenient for implementation and maintenance management.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion of reinforced concrete structures, and relates to an electric field salt-resistance protection system for protecting reinforced concrete structures in a chloride salt environment, which is used to prevent corrosion of reinforced concrete structures in oceans, saline-alkali areas, and deicing salt environments. Improve its service life. Background technique [0002] Reinforced concrete structures in salt-polluted environments such as oceans and de-icing salts, due to the erosion of chloride salts, lead to corrosion of steel bars and cause premature failure, which has become a major disaster that is widely concerned and increasingly prominent all over the world. It not only caused huge direct and indirect losses, but also caused a large consumption of limited resources, leading to environmental pollution and threatening personal safety. Therefore, in today's advocacy of energy saving, emissio...

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Problems solved by technology

[0014] The purpose of the present invention is to provide an electric field salt-resistance system for the protection of reinforced concrete structures in a chloride-salt environment, which combines the service life of large-scale infrastructure projects with a service life of more than 100 years and the needs of sustainable development. Short or complex system, difficult management and other current situations, introduce a new concept of corrosion protection, starting from the essence of steel corrosion caused by chloride salt intrusion into concrete in the external environment, a new electric field salt resistance system is proposed, which is suitable for newly-built reinforced concrete in a chloride salt environment After the structure adopts this system, it can effectively prevent the intrusion of chloride ions in the environment, and achieve the purpose of protecting the internal steel bars from corrosion for a long time

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