Reinforced concrete cathode protection system and method

Abstract

The invention discloses a reinforced concrete cathode protection system and method. The reinforced concrete cathode protection system comprises reinforcing steel bars, concrete, a titanium net, a graphene / carbon fiber cement base material and a power source. The reinforcing bars are connected with the negative electrode of the power source to serve as cathodes; a hole solution of the concrete serves as an electrolyte; the titanium net is connected with the positive electrode of the power source to serve as a main anode; the graphene / carbon fiber cement base material serves as an auxiliary anode; and the reinforcing bars, the concrete, the titanium net, the graphene / carbon fiber cement base material and the power source form a loop of the cathode protection system. The reinforced concrete cathode protection system is low in cost, low in energy consumption and durable, an existing cathode protection technology is improved and optimized, an economical and effective corrosion protection technology is provided for domestic large-amount and large-range chlorine salt corrosion engineering, and obvious economic benefits and application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of corrosion protection of large-scale industrial and civil construction projects, water conservancy projects, offshore and marine engineering structures, and in particular to a reinforced concrete cathodic protection system and a protection method thereof. Background technique [0002] Impressed current cathodic protection technology is one of the most effective protective measures for steel corrosion in concrete, saline-alkali soil and seawater environment. The cathodic protection technology for reinforced concrete with conventional impressed current has been applied in developed countries in Europe and America and in domestic projects. The most critical issue in reinforced concrete impressed current cathodic protection technology is the construction of the protection system. In the cathodic protection system, the material selection, preparation and structural design of the anode are the key points. For ...

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Problems solved by technology

The mixture anode of hot asphalt and coke scraps is fragile, resulting in low anode coating strength and poor wear resistance; graphite powder conductive polymer cement anode makes up for the shortage of anode mixture of hot pitch and coke scraps, but due to the occurrence of anode wire The acidification reaction will cause corrosion of the cement and concrete layers; the anode of the conductive plastic wire mesh has a long service life, and the anode material has a large polarizability under the anodic polarization current density, resulting in a low maximum rated current density; titanium-based anode electrodes Reinforcement has a long service life, but the engineering cost is too high

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