董必钦,庄钊涛,顾镇涛,等.矿渣混凝土氯离子渗透的电化学阻抗谱分析[J].深圳大学学报理工版,2019,36(No.3(221-330)):268-273.[doi:10.3724/SP.J.1249.2019.03268]
DONG Biqin,ZHUANG Zhaotao,GU Zhentao,et al.Electrochemical impedance spectroscopy analysis of Cl penetration in slag concrete[J].Journal of Shenzhen University Science and Engineering,2019,36(No.3(221-330)):268-273.[doi:10.3724/SP.J.1249.2019.03268]
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矿渣混凝土氯离子渗透的电化学阻抗谱分析
董必钦,庄钊涛,顾镇涛,吴育盛,滕晓娟,邢 锋,洪舒贤

深圳大学土木工程学院,广东省滨海土木工程耐久性重点实验室,深圳市土木工程耐久性重点实验室,广东深圳 518060

混凝土; 矿渣; 氯离子渗透; 电化学阻抗谱; 等效电路; 渗透深度

Electrochemical impedance spectroscopy analysis of Cl- penetration in slag concrete
DONG Biqin,ZHUANG Zhaotao, GU Zhentao, WU Yusheng, TENG Xiaojuan, XING Feng, and HONG Shuxian

Department of Civil Engineering, Key Laboratory of Durability for Marine Civil Engineering of Guangdong Province, Shenzhen Key Laboratory on Durability of Civil Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China

concrete; slag; chloride penetration; electrochemical impedance spectroscopy; equivalent circuit; penetration depth

DOI: 10.3724/SP.J.1249.2019.03268

备注

为改进传统的氯离子渗透混凝土深度测试技术,分析不同矿渣掺量对氯离子渗透深度的影响,通过多组不同矿渣掺量混凝土的氯离子渗透实验,并采用等效电路模型,对混凝土电化学阻抗数据进行了测试. 结果表明,在混凝土中掺入矿渣能降低氯离子的渗透深度,氯离子渗透的深度与等效电路元件的拟合值有较强的线性关系. 在电化学性能改变的基础上,通过分析不同矿渣掺量,可以预测混凝土中氯离子的渗透深度.

In order to improve the traditional testing technology of chloride penetration depth of concrete and the influence of different slag content on the penetration depth of chloride ion,we carry out chloride ion penetration experiments of several groups of concrete with different slag content. Meanwhile, a suitable equivalent circuit model is applied to test the electrochemical impedance data of cement based material. The experimental results show that the penetration depth of chloride ion can be reduced by adding slag in concrete. In addition, there is a strong linear relationship between the depth of the chloride ion penetration and the fitting value of the equivalent circuit element. On the basis of the change of electrochemical performance, the penetration depth of chloride ion in concrete can be predicted by the analysis of the content of different slag.

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