Potential step voltammetry: An approach to corrosion rate measurement of reinforcements in concrete

被引：16

作者：

Ramon, J. E. ^{[1
,5
]}

Gandia-Romero, J. M. ^{[1
,2
]}

Bataller, R. ^{[1
]}

Alcaniz, M. ^{[1
,4
]}

Valcuende, M. ^{[2
]}

Soto, J. ^{[1
,3
]}

机构：

[1] Univ Politecn Valencia, Univ Valencia, Interuniv Res Inst Mol Recognit & Technol Dev, Camino Vera S-N, Valencia 46022, Spain

[2] Univ Politecn Valencia, Dept Architectural Construct, Camino Vera S-N, Valencia 46022, Spain

[3] Univ Politecn Valencia, Dept Chem, Camino Vera S-N, Valencia 46022, Spain

[4] Univ Politecn Valencia, Dept Elect Engn, Camino Vera S-N, Valencia 46022, Spain

[5] CSIC, Inst Ciencias Construcc Eduardo Torroja, C Serrano Galvache 4, Madrid 28033, Spain

来源：

CEMENT & CONCRETE COMPOSITES | 2020年 / 110卷 / 110期

关键词：

Potential step voltammetry; Non-destructive technique; Steel corrosion; Reinforced concrete; Durability; POLARIZATION RESISTANCE METHOD; TAFEL SLOPES; THEORETICAL-ANALYSIS; CURVES; CONSTANTS;

D O I：

10.1016/j.cemconcomp.2020.103590

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents a Potentiostatic Step Voltammetry approach to corrosion rate measurement of reinforcements in concrete. We have termed this approach PSV-TE since it is based on the Tafel extrapolation method, but with the added advantage that long and slow potentiodynamic scans are no longer required to obtain the Tafel slopes. In this way, the irreversible polarization of rebars is prevented, so PSV-TE is considered to be a non-destructive method. The Tafel slopes are obtained by fitting the current-time response of the system to a theoretical model which we have outlined and validated previously. In this way, the concrete's electrical resistance and double layer capacity are also obtained. In this study, the optimal PSV-TE design has been established and validated on a range of reinforced concrete specimens. Results show minimal deviation between PSV-TE and reference methods. Therefore, PSV-TE is part of the corrosion monitoring system we have patented.

引用

页数：12

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