Electrochemical experimental study on corrosion protection of PCCP prestressed steel wire coating

May 1, 2026Journal of China institute of water resources and hydropower research

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Key Points

The study aims to investigate the corrosion behavior of prestressed steel wires in varying NaCl concentrations and assess the effectiveness of protective coatings.
Analyzed corrosion potential, current density, and electrochemical impedance in different NaCl concentrations.
Compared stress effects on bare steel and coated steel wires in saline environments.
Used a control group of unstressed wires for baseline comparison.
Corrosion rate peaks in 3.5% NaCl solution; dominant effect is from chloride concentration.
Stress accelerates corrosion primarily in low concentration NaCl solutions.
Single-component polyurea coating significantly enhances corrosion resistance, maintaining high impedance values under applied stress.

Electrochemical study evaluates corrosion protection in prestressed steel wires in saline environments, suggesting effective coatings.

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YANG et al. (2026) studied this question.

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