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Practical Experiences with Corrosion Protection of Water Intake Gates in Mekong River

机译：湄公河进水口闸门防腐蚀的实践经验

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摘要

Corrosion behaviour of water intake gate steel structures with different protective measures was investigated. Five material alternatives were taken for investigation, including: imported and recycled stainless steel, carbon steel with hot zinc spraying, painting and composite coatings. Results of corrosion rate for carbon steel, SUS 304, hot zinc spray coats in three water systems of Mekong river basin (saline, blackish and fresh) were also presented. Corrosion rate of carbon steel decreased with decreasing salinity in the investigated water environments. Meanwhile, these values for zinc coated steel, behaved by another way. Environmental data for these systems were filed and discussed in relation with corrosion characteristics. Method of Life Cycle Assessment (LCA) was applied in materials selection for water intake gate construction. From point of Life Cycle Cost (LCA) the following ranking was obtained: Zinc sprayed steel < Recycled stainless steel < Composite coated steel < Painting steel < SUS 304 From investigated results, hot zinc spray coating has been applied as protective measure for steel structures of water intake systems in Mekong river basin.
机译：研究了采取不同防护措施的进水口钢结构的腐蚀行为。有五种替代材料可供研究，包括：进口和回收不锈钢，带热锌喷涂的碳钢，油漆和复合涂层。还介绍了在湄公河流域的三个水系统（盐水，淡黑色和淡水）中碳钢，SUS 304和热锌喷涂层的腐蚀速率结果。在研究的水环境中，碳钢的腐蚀速率随着盐度的降低而降低。同时，镀锌钢的这些值以另一种方式表现。归档并讨论了这些系统的环境数据以及腐蚀特性。生命周期评估方法（LCA）被用于进水闸门构造的材料选择。从生命周期成本（LCA）的角度得出以下排名：喷锌钢<再生不锈钢<复合涂层钢<喷漆钢

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