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Alternative methodology for on site monitoring of corrosion and remediation of reinforced concrete

机译：现场监测钢筋混凝土腐蚀和修复的替代方法

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摘要

Difficulties associated with the interpretation of site data collected over long periods of time from commonly used corrosion monitoring techniques for steel reinforcement in concrete, such as corrosion potential measurements and linear polarisation resistance, often make it difficult to assess accurately the extent of corrosion. An alternative methodology for the interpretation of data is proposed, based upon a model of the quality of the passive film on the steel surface. This model leads to a representation of the corrosion state by means of the relationship, over a long period of time, between the corrosion potential and the logarithm of the linear polarisation resistance. For the reinforced concrete panels tested in this study, data points representing this relationship closely fitted a family of results. This led to the development of a so called 'monitoring control diagram', MCD, in which for a fixed geometry and fixed experimental conditions, a relationship between the corrosion potential and polarisation resistance of steel exists. The establishment of an MCD mav enable the development of a useful monitoring tool.
机译：从常用的钢筋混凝土腐蚀监测技术中长期收集的现场数据的解释困难，例如腐蚀电位测量和线性极化电阻，常常使准确评估腐蚀程度变得困难。基于钢表面钝化膜的质量模型，提出了一种替代的数据解释方法。该模型通过很长一段时间内腐蚀电位和线性极化电阻对数之间的关系来表示腐蚀状态。对于本研究中测试的钢筋混凝土面板，代表这种关系的数据点紧密符合一系列结果。这导致了所谓的“监测控制图”（MCD）的发展，其中，对于固定的几何形状和固定的实验条件，腐蚀电位与钢的极化电阻之间存在关系。 MCD mav的建立可以开发有用的监视工具。

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