Reinforced concrete hybrid cathodic protection device and method
CN116445920BActive Publication Date: 2026-05-26CCCC FOURTH HARBOR ENG INST CO LTD +1
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CCCC FOURTH HARBOR ENG INST CO LTD
- Filing Date
- 2023-04-19
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
In marine environments, reinforced concrete structures are corroded by chloride ion penetration, and existing cathodic protection methods require regular maintenance.
Method used
A reinforced concrete hybrid cathodic protection device is adopted. By short-circuiting the circuit between the sacrificial anode and the reinforcing steel, the current is continuously supplied by the dissolution of the sacrificial anode, keeping the reinforcing steel in a passivated state and reducing maintenance.
Benefits of technology
It achieves reinforced concrete protection that requires no regular maintenance, keeps the steel bars from rusting for a long time, and improves the durability of the structure.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116445920B_ABST
Abstract
This invention discloses a hybrid cathodic protection device and method for reinforced concrete. The concrete contains an anode cable groove, an anode hole, and a cathode cable groove, with reinforcing bars placed within the concrete. The device includes: a power supply; a sacrificial anode installed in the anode hole; an anode feed cable installed in the anode cable groove and connected to the sacrificial anode; and a cathode feed cable connected to the reinforcing bars through the cathode cable groove. In a first operating state, the sacrificial anode is connected to the positive terminal of the power supply via the anode feed cable, and the reinforcing bars are connected to the negative terminal of the power supply via the cathode feed cable. In a second operating state, the anode feed cable and the cathode feed cable are connected, causing a short circuit between the sacrificial anode and the reinforcing bars. This provides effective protection for the hybrid reinforced concrete and reduces regular maintenance.
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