Weathering tests to investigate the durability of anti-corrosion coatings and on-site repair materials

Q1 Engineering

Transportation Engineering Pub Date : 2024-07-31 DOI:10.1016/j.treng.2024.100265

Katharina S. Wetzel , Matthias Wanner , Matthias J. Schmid

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引用次数: 0

Abstract

Steel structures are exposed to multiple environmental impacts that lead to reduced durability. Organic paint systems are a resilient mechanism to protect hydraulic steel structures from corrosion. Coatings lead to a decreased corrosion progress at damaged areas. In this work, we investigated the time dependency of undercoating corrosion in the neutral salt spray test in detail by conducting a long-term experiment. Thereby, the fundamental model of corrosion progress was investigated, leading to an increased reliability in approval procedures of coatings and in the choice of test parameters.

Additionally, repair materials for on-site repair of damaged coatings were investigated in weathering tests to compare their performance with conventional coatings. These materials are used for short-term repairs of small damaged areas in order to postpone replacement of ailing structures, thus enhancing the durability of steel structures.

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进行耐候性试验，研究防腐涂层和现场修复材料的耐久性

钢结构会受到多种环境影响，导致耐久性降低。有机涂料系统是一种保护液压钢结构免受腐蚀的弹性机制。涂层可降低受损区域的腐蚀速度。在这项工作中，我们通过长期实验详细研究了中性盐雾试验中涂层腐蚀的时间依赖性。此外，我们还在老化试验中研究了用于现场修复受损涂层的修复材料，以比较它们与传统涂层的性能。这些材料可用于小面积受损部位的短期修复，以推迟病变结构的更换时间，从而提高钢结构的耐久性。

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