Alternative TitleInhibition Effect of a New Composite Organic Inhibitor on Corrosion of Steel Rebar in Simulated Concrete Solution or Inside Mortar Specimen
陈云翔1; 冯丽娟2; 蔡建宾1; 王璇2; 洪毅成1; 林德源1; 庄建煌3; 杨怀玉2
Source Publication中国腐蚀与防护学报
Other AbstractThe inhibition effect of a new composite organic inhibitor(named IMC-16) on the corrosion of steel rebar in simulated concrete solutions or inside mortar specimens was investigated by means of half-cell corrosion potential measurement, linear polarization measurement and electrochemical impendence spectroscopy respectively. For the comparison, the inhibition effect of a conventional inhibitor Ca(NO2)2 was also presented. Results indicate that whether in simulated concrete solutions or in-side mortar specimens,for the case of blank, the corrosion potentials of steel rebar electrodes gradually reduced, while the corrosion current densities significantly increased, indicating that the passivity of steel rebar was deteriorated and the localized corrosion initiated on the surface of steel rebar electrodes due to the aggressive effect of chloride ions. However, after the addition of IMC-16 inhibitor, the corrosion potentials and the impedance modulus of steel rebar electrodes were obviously increased, the corrosion current densities and double layer capacitances largely decreased in comparison with those of blank, which reveal that the corrosion of steel rebar was well controlled, the composite organic inhibitor had excellent inhibition effect for the chloride-induced corrosion, and the onset time of steel rebar corrosion was effectively delayed. Dry and wet cycle experiments further show that Ca(NO2)2 could retard the steel rebar corrosion at the early stage of tests, but its inhibition performance was gradually decreased with the process of experiments. In comparison with Ca(NO2)2, although the inhibition effect of IMC-16 inhibitor was not enough to prevent the steel rebar from corrosion at the early stage of tests, but its inhibition effect and stability were much better than those of Ca(NO2)2 at the same concentration for long term.
Keyword有机阻锈剂 钢筋腐蚀 混凝土模拟液 混凝土试块 电化学技术
Indexed ByCSCD
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Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
陈云翔,冯丽娟,蔡建宾,等. 新型复配阻锈剂在混凝土模拟液和试块中对钢筋锈蚀的抑制[J]. 中国腐蚀与防护学报,2018,38.0(004):343-350.
APA 陈云翔.,冯丽娟.,蔡建宾.,王璇.,洪毅成.,...&杨怀玉.(2018).新型复配阻锈剂在混凝土模拟液和试块中对钢筋锈蚀的抑制.中国腐蚀与防护学报,38.0(004),343-350.
MLA 陈云翔,et al."新型复配阻锈剂在混凝土模拟液和试块中对钢筋锈蚀的抑制".中国腐蚀与防护学报 38.0.004(2018):343-350.
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