The breakthrough and diffusion of chloride ions into reinforced concrete structures is the major contributing factor for inducing corrosion of the steel reinforcement. This work presents a study of the total chloride contents in concrete and the corrosion process by testing electrical resistivity and half‐cell potential of concrete samples. The novelty of this work in the use of a green inhibitor—orange peel extract. The analysis was based on an experimental investigation of the samples with time of immersion in 3.5 wt% NaCl aqueous solutions at room temperature according to European Standards. For this study, different mixtures of concrete were prepared by adding two types of superplastisizers and green inhibitors in different concentrations. The results of the Cl⁻ ions test showed that all the samples (except sample C2) after an immersion testing period of 6 months contained Cl⁻ ions in high concentrations, indicating a greater risk of corrosion. Sample C2 (with green inhibitor and Oxydtron superplasticizer) showed the highest resistance against the chloride ion ingress measured by following the Cl⁻ concentration changes up to the end of the 6 months testing period. This samples' good resistance to corrosion in the tested environment was also proved by the results of several sets of measurements of the electrical resistivity and half‐cell potentials carried on the concrete test samples.

中文翻译：

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用绿色抑制剂和增塑剂研究钢筋混凝土中的氯离子和腐蚀性能

氯离子的渗透和扩散到钢筋混凝土结构中是导致钢筋腐蚀的主要因素。这项工作通过测试混凝土样品的电阻率和半电池电位来研究混凝土中总氯含量和腐蚀过程。使用绿色抑制剂橙皮提取物进行这项工作的新颖性。该分析基于根据欧洲标准在室温下将样品浸入3.5 wt％NaCl水溶液中的时间进行的实验研究。对于本研究，通过添加两种不同浓度的超级增塑剂和绿色抑制剂来制备不同的混凝土混合物。该氯的结果^-离子试验表明，所有6个月的浸没试验期后样品（除了样品C2）中含有氯^-离子浓度高，指示腐蚀的风险更大。样品C2（与绿色抑制剂和Oxydtron减水剂）显示针对由以下的氯测定的氯离子进入最高抗性^-浓度变化高达6个月的测试期结束。在混凝土测试样品上进行的几组电阻率和半电池电位测量结果也证明了该样品在测试环境中具有良好的耐腐蚀性。