The primary structural challenge in tidal barrage construction compared to conventional dam construction is the constant exposure to saltwater and the dynamic forces of tidal flow, leading to accelerated corrosion and fatigue. Conventional dams typically impound freshwater, which is significantly less corrosive than saltwater. Tidal barrages, however, are continuously submerged in saltwater, which contains chloride ions that promote corrosion of steel and other metallic components. Corrosion is the gradual degradation of materials, usually metals, due to chemical reactions with their environment....
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