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首页> 外文期刊>Corrosion >Metal Corrosion Rate Determination of Different Solutions and Reinforced Concrete Specimens by Means of a Noncontacting Corrosion Method
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Metal Corrosion Rate Determination of Different Solutions and Reinforced Concrete Specimens by Means of a Noncontacting Corrosion Method

机译：非接触腐蚀法测定不同溶液和钢筋混凝土试样的金属腐蚀速率

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All the current techniques used to measure the metallic corrosion require contact with the metal. Particularly, in the case of reinforcement corrosion, this signifies the need to reach the bar that is embedded in the concrete, which consequently may result in the disruption of the integrity of the real structures. This paper studies the limits of application of a new method for polarizing the reinforcement or any metal in an electrolyte, without the need of direct contact. The polarization is obtained through the induction of current from an external electrical field. The current runs through the electrolyte and the metal in parallel, depending on the electrode arrangement. The resulting polarization resistance calculated is termed as inductive, R^sub p^ = R^sub pi^, as reported in a previous paper. The inductive R^sub p^ is calculated by the model of resistances in parallel, which requires a separate measurement of the electrolyte ohmic resistance. In this study, solutions with several resistivities and concrete specimens with and without chlorides have been tested. Results indicate that electrolytes of low resistivity mask the measurement, and consequently, R^sub pi^ could not be calculated. In electrolytes with high resistivity, such as concrete, the feasibility is found to depend on the relative values of R^sub e^ and R^sub pi^. [PUBLICATION ABSTRACT]
机译：当前用于测量金属腐蚀的所有技术都需要与金属接触。特别是在钢筋腐蚀的情况下，这意味着需要到达埋入混凝土中的钢筋，因此可能会破坏实际结构的完整性。本文研究了一种用于极化增强材料或电解质中任何金属而无需直接接触的新方法的应用范围。极化是通过感应来自外部电场的电流获得的。电流根据电极排列平行流过电解质和金属。如先前论文中所报道的，所计算出的所得极化电阻被称为感性，R p ＝ p R ＝ p pi。电感R p的计算是通过并联的电阻模型来计算的，这需要对电解质的欧姆电阻进行单独的测量。在这项研究中，已经测试了具有多种电阻率的溶液以及带有或不带有氯化物的混凝土试样。结果表明低电阻率的电解质掩盖了该测量结果，因此无法计算R ^ sub pi ^。在诸如混凝土的具有高电阻率的电解质中，发现可行性取决于R s e e和R s p i的相对值。 [出版物摘要]

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  • 来源
    《Corrosion》 |2010年第5期|p.1-10|共10页
  • 作者

    C Andrade I Martínez;

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    C. Andrade* and I. Martinez[double dagger], *Submitted for publication September 15, 2009, In revised form, December 15, 2009.[double dagger] Corresponding author. E-mail: lsabelms@letcc.cslc.es.* Institute of Construction Science, CSIC, C/Serrano Galvache No. 4, Madrid, 28033, Spain.,;

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