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Evaluation of Coating Systems for Steel Structures

机译：钢结构涂层系统的评估

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In the last decade, the formulation of coatings used for steel structures has seen major changes. These changes mainly concern environmental aspects (green products) and a desire to enhance workers' safety through the reduction of Volatile Organic Compounds (VOC). The Hydro Quebec network is ageing and priority must be ascertained for painting steel structures. In order to upgrade the coatings used by the company, an investigation and assessment were done of different coating systems used mainly for lattice towers and steel poles (aboveground). The evaluated coatings were chosen based on the paint companies' recommendations and on the utility's specific needs. Twenty-three coating systems were included in an accelerated aging study. To represent different situations encountered in the field, the selected coatings were applied on three different substrates, aged galvanized, new steel and rusted steel using the appropriate surface preparation for each one. Testing was done according to cyclic tests as per ASTM D 5894. To facilitate the evaluation, the coatings were divided into four main chemical families: epoxy, polyurethane, alkyd, and acrylic. This paper presents the approach that was used and the results obtained. As some of the coatings tested presented anti-graffiti characteristics, a laboratory experiment to test different graffiti media and different cleaners was also conducted. The results are presented in this paper.
机译：在过去的十年中，用于钢结构的涂料配方发生了重大变化。这些变化主要涉及环境方面（绿色产品），以及通过减少挥发性有机化合物（VOC）来提高工人安全性的愿望。魁北克水电网络已经老化，必须确定对钢结构进行喷漆的优先级。为了升级公司使用的涂料，对主要用于格形塔和钢杆（地上）的不同涂料系统进行了调查和评估。根据涂料公司的建议和公用事业的特定需求选择评估的涂料。加速老化研究中包括了23种涂层系统。为了代表本领域中遇到的不同情况，将选定的涂料分别使用三种合适的表面处理方法，分别涂覆在三种不同的基材上，即老化的镀锌，新钢和生锈的钢。根据ASTM D 5894的循环测试进行测试。为便于评估，将涂层分为四个主要化学类别：环氧，聚氨酯，醇酸和丙烯酸。本文介绍了所使用的方法并获得了结果。由于测试的某些涂料具有抗涂鸦的特性，因此还进行了一项实验室实验来测试不同的涂鸦介质和不同的清洁剂。结果在本文中提出。

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