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首页> 外文期刊>International Journal of Electrochemical Science >Time Dependent Electrochemical Effect of Saturated Area in Capillary and Gel Pores of Concrete on the Corrosion Rate of Embedded Steel Reinforcement
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Time Dependent Electrochemical Effect of Saturated Area in Capillary and Gel Pores of Concrete on the Corrosion Rate of Embedded Steel Reinforcement

机译：混凝土的毛细管和凝胶孔中的饱和区对埋入式钢筋的腐蚀速率的时间依赖性电化学效应

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摘要

This paper aims at measurement of time dependent electrochemical corrosion rate in reinforcedconcrete under the effect of varying moisture content in the gel zone and capillary pores acting as anelectrolyte. From the experimental measurements of the concrete-corrosion electrochemical cells forone year, an interesting descending trend in the corrosion rate measurement was observed which hasbeen further explored in this paper and modeled by using a constitutive equivalent FEMelectrochemical model based on mass and energy transfer through the porous media for corrosionmeasurement under various environmental conditions. The reason for decrease in measured corrosionrate with time was found to be dependent on the saturated area of concrete acting as electrolyte for thecorrosion process which becomes gradually smaller with the passage of time and age of concrete. Theelectrolyte present in gel and capillary pore zones reduces with successive reduction in porosity andsaturation over a certain time interval and finite control volume.
机译：本文旨在测量凝胶区中水分含量的变化和用作电解质的毛细孔在时间上对钢筋混凝土的电化学腐蚀速率的影响。从对混凝土腐蚀电化学电池进行一年的实验测量中，观察到腐蚀速率测量出现了有趣的下降趋势，本文对此进行了进一步探索，并通过基于质量和能量通过多孔结构的能量传递的本构等效有限元电化学模型进行了建模。用于在各种环境条件下进行腐蚀测量的介质。发现随时间降低测量的腐蚀速率的原因取决于用作腐蚀过程的电解质的混凝土的饱和区域，该饱和区域随着时间的流逝和年龄的增长而逐渐变小。在一定的时间间隔和有限的控制体积内，随着孔隙率和饱和度的连续降低，存在于凝胶和毛细孔区域中的电解质会减少。

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