Abstract Pigments are considered as the major content of paints that can help in preventing corrosion. In this work, epoxy based pait system was applied on reinforced concrete steel to evaluate its anticorrosive performance. This system is based on new core-shell pigments which are composed of a core of different calcium carbonate sources (natural calcite, marble waste and eggshell) covered with thin shell of zinc ferrite to compare their anticorrosive effect. The corrosion resistance of the coatings was evaluated in 3.5 % NaCl for 28 days via two electrochemical methods; open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS). The measurements revealed that coated concrete steel with paints containing zinc ferrite/marble was the best in its corrosion protection performance showing that although the cores are all based on calcium carbonate, the source can affect the performance.

中文翻译：

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新型核壳颜料对涂层钢筋混凝土钢防腐性能的评价

摘要 颜料被认为是涂料的主要成分，有助于防止腐蚀。在这项工作中，环氧基涂料体系应用于钢筋混凝土钢以评估其防腐性能。该系统基于新的核壳颜料，该颜料由不同碳酸钙来源（天然方解石、大理石废料和蛋壳）组成的核被铁酸锌薄壳覆盖，以比较它们的防腐效果。通过两种电化学方法评估涂层在 3.5% NaCl 中 28 天的耐腐蚀性；开路电位 (OCP) 和电化学阻抗谱 (EIS)。