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首页> 外文期刊>ISIJ international >A Study on the Corrosion Resistance of Cr-bearing Rebar in Mortar in Corrosive Environments Involving Chloride Attack and Carbonation
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A Study on the Corrosion Resistance of Cr-bearing Rebar in Mortar in Corrosive Environments Involving Chloride Attack and Carbonation

机译：含氯腐蚀和碳化腐蚀环境下砂浆中含铬钢筋的耐蚀性研究

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Nine types of reinforcing steels having different Cr contents were placed in mortar simulating environments involving chloride attack, carbonation, and combined deterioration and subjected to corrosion-accelerating test for fundamental research on the corrosion resistance of Cr-bearing rebars in corrosive environments where reinforced concrete structures are to be constructed. The polarization resistance and corrosion potential of Cr-bearing rebars were then measured at temperatures of 60, 40, and 20℃ to investigate their electrochemical properties in corrosive environments. Their corrosion area and average corrosion rate at the end of 40 cycles of corrosion-accelerating testing were also calculated to investigate their corrosion resistance. As a result, the corrosion resistance of Cr-bearing rebars was found to increase as their Cr content increases in all corrosive environments, and the excellent corrosion resistance of Cr-bearing rebars with Cr contents of 5% or more and 7% or more was confirmed in uncarbonated and carbonated environments, respectively, with a chloride ion content of 1.2 kg/m~3.
机译：将九种不同Cr含量的增强钢放置在砂浆模拟环境中，该环境包括氯化物侵蚀，碳化和综合变质，并进行加速腐蚀试验，以研究钢筋混凝土结构在腐蚀性环境中含铬钢筋的耐腐蚀性将被建造。然后在60、40和20℃的温度下测量含Cr钢筋的抗极化强度和腐蚀电位，以研究其在腐蚀性环境中的电化学性能。还计算了它们在加速腐蚀试验40个循环结束时的腐蚀面积和平均腐蚀速率，以研究其耐腐蚀性。结果，发现在所有腐蚀环境中，含Cr钢筋的耐腐蚀性都随着Cr含量的增加而增加，并且Cr含量为5％以上且7％以上的含Cr钢筋的耐腐蚀性优异。分别在未碳酸化和碳酸化的环境中确认，氯离子含量为1.2 kg / m〜3。

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