| 带锈钢筋再碱化过程中的电极过程研究 |
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| 引用本文： | 张俊喜,张羽,夏凯,周祾,屈文俊. 带锈钢筋再碱化过程中的电极过程研究[J]. 腐蚀科学与防护技术, 2009, 21(3) |
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| 作者姓名： | 张俊喜 张羽 夏凯 周祾 屈文俊 |
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| 作者单位： | 1. 上海电力学院电化学研究室,国家电力公司热力设备腐蚀与防护重点实验室,上海,200090
2. 同济大学土木工程学院,上海,200090 |
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| 基金项目： | 国家自然科学基金，上海市重点学科建设项目 |
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| 摘 要： | 研究了带锈钢筋在再碱化过程中的电极表面电化学反应,采用电化学测量技术结合模拟实验考察了电极表面发生的各类反应的可能性;研究了Li+离子对钢筋电极过程的作用,同时考察了带锈钢筋混凝土再碱化后的耐蚀性.结果表明:再碱化过程中,钢筋电极表面的电化学反应与钢筋表面的状态有密切的关系,当电极表面存在锈蚀层时,再碱化过程析氢反应和氧化铁的还原同时发生,并使表面氧化层的价态逐渐降低,并有可能在电极表面形成金属铁.Li+的存在会改善钢筋电极铁与其氧化物之间氧化还原的可逆性,但对带锈钢筋混凝土再碱化后的耐蚀性作用不明显.再碱化对带锈钢筋混凝土的修复具有一定的效果.
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| 关 键 词： | 电极过程 再碱化 碳化混凝土 钢筋 |
ELECTRODE PROCESS OF RUSTED REBAR OF AGED CONCRETE DURING REALKALIZATION TREATMENT IN Ca(OH)_2 SOLUTION |
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| ZHANG Jun-xi,ZHANG Yu,XIA Kai,ZHOU Ling,QU Wen-jun. ELECTRODE PROCESS OF RUSTED REBAR OF AGED CONCRETE DURING REALKALIZATION TREATMENT IN Ca(OH)_2 SOLUTION[J]. Corrosion Science and Protection Technology, 2009, 21(3) |
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| Authors: | ZHANG Jun-xi ZHANG Yu XIA Kai ZHOU Ling QU Wen-jun |
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| Affiliation: | ZHANG Jun-xi1,ZHANG Yu1,XIA Kai1,ZHOU Ling1,QU Wen-jun21.Electrochemical Research Group,Shanghai University of Electric Power,Key Laboratory of State Power Corporation of China,Shanghai 200090,2.College of Civil Engineering,Tongji University,Shanghai,200090 |
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| Abstract: | The electrochemical reactions on the rusted rebar during realkalization treatment were investigated by using simulated test and electrochemical measurement.The coulomb and the volume of H2 were measured during realkalization treatment and the cyclic voltammetry of rebar in different solution were measured.The effect of addition of Li+ in electrolyte on the electrode process was investigated.The measurement of corrosion resistance of realkalized carbonated concrete with rusted rebar was carried out.Results s... |
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| Keywords: | electrode process realkalization rebar with rust |
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