模拟混凝土孔隙液中D-葡萄糖酸钠复合缓蚀剂对钢筋的阻锈作用

引用本文: 杨榕杰, 郭亚, 唐方苗, 王小平, 杜荣归, 林昌健. 模拟混凝土孔隙液中D-葡萄糖酸钠复合缓蚀剂对钢筋的阻锈作用[J]. 物理化学学报, 2012, 28(08): 1923-1928. doi: 10.3866/PKU.WHXB201205292 shu

Citation: YANG Rong-Jie, GUO Ya, TANG Fang-Miao, WANG Xiao-Ping, DU Rong-Gui, LIN Chang-Jian. Effect of Sodium D-Gluconate-Based Inhibitor in Preventing Corrosion of Reinforcing Steel in Simulated Concrete Pore Solutions[J]. Acta Physico-Chimica Sinica, 2012, 28(08): 1923-1928. doi: 10.3866/PKU.WHXB201205292 shu

模拟混凝土孔隙液中D-葡萄糖酸钠复合缓蚀剂对钢筋的阻锈作用

基金项目:
国家自然科学基金(21073151, 21173177, 50731004, 21021002) 资助项目 (21073151, 21173177, 50731004, 21021002)

摘要:

应用电化学技术, 结合扫描电子显微镜(SEM)观测, 研究D-葡萄糖酸钠、钼酸钠和硫脲三组分复合缓蚀剂对模拟混凝土孔隙液中钢筋腐蚀行为的影响及其阻锈作用. 结果表明: 在含3.5% (w) NaCl的模拟混凝土孔隙液中, 复合缓蚀剂具有协同效应, 对钢筋有良好的阻锈作用. 当D-葡萄糖酸钠、钼酸钠和硫脲浓度分别为750、250和500 mg·L^-1时, 对钢筋的缓蚀效率可达到94.5%. 应用软硬酸碱(HSAB)理论分析缓蚀机理, 可认为三组分复合缓蚀剂在钢筋表面共同形成保护膜而阻止钢筋的腐蚀.

关键词:

English

Effect of Sodium D-Gluconate-Based Inhibitor in Preventing Corrosion of Reinforcing Steel in Simulated Concrete Pore Solutions

1.
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
Received Date: 28 April 2012
Available Online: 10 July 2012
Fund Project:
国家自然科学基金(21073151, 21173177, 50731004, 21021002) 资助项目

Abstract:

The corrosion behavior of reinforcing steel in simulated concrete pore solutions with and without corrosion inhibitors was studied by electrochemical techniques and scanning electron microscopy (SEM). A combined inhibitive effect of sodium D-gluconate, Na₂MoO₄ and thiourea on restraining the corrosion of reinforcing steel immersed in the solution was observed. This result showed that there was a synergetic effect among the three agents in corrosion prevention. After adding the compound inhibitor (750 mg·L^-1 sodium D-gluconate, 250 mg·L^-1 Na₂MoO₄, 500 mg·L^-1 thiourea) into the simulated concrete pore solution containing 3.5% (w) NaCl, the inhibition efficiency of the compound inhibitor was 94.5%. According to the Hard and soft acids and bases (HSAB) theory, the compound inhibitor worked by forming a protective film on the steel surface.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

模拟混凝土孔隙液中D-葡萄糖酸钠复合缓蚀剂对钢筋的阻锈作用

English

Effect of Sodium D-Gluconate-Based Inhibitor in Preventing Corrosion of Reinforcing Steel in Simulated Concrete Pore Solutions

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

模拟混凝土孔隙液中D-葡萄糖酸钠复合缓蚀剂对钢筋的阻锈作用

English

Effect of Sodium D-Gluconate-Based Inhibitor in Preventing Corrosion of Reinforcing Steel in Simulated Concrete Pore Solutions

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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