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首页> 外文会议>International Workshop On Measurement and Interpretation of the On-site Corrosion Rate MESINA Feb 22-23, 1999, Madrid, Spain >VENEZUELAN EXPERIENCES ON POLARIZATION RESISTANCE TO EVALUATE REINFORCED CONCRETE STRUCTURES
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VENEZUELAN EXPERIENCES ON POLARIZATION RESISTANCE TO EVALUATE REINFORCED CONCRETE STRUCTURES

机译：委内瑞拉用于评估钢筋混凝土结构抗极化性的经验

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摘要

This work presents the experience gained by Centro de Estudios de Corrosion at Universidad del Zulia (LUZ), using electrochemical measurements to evaluate, diagnose and repair concrete structures with corroded reinforcement. The work discusses three important cases: The Maracaibo Bridge, a salt-handling bay and an Olympic swimming pool. These structures were first visually inspected to pick out the elements/components that were to be subjected to detailed inspection using electrochemical techniques and a physical-chemical analysis of the concrete. Corrosion-potential (Ecorr) and corrosion-rate (Icorr) electrochemical measurements were used to select the zones for physical-chemical analysis of the concrete. This is of great importance, since it guarantees adequate samples without having to extract non-representative cores. These evaluations determined that potentials measurements do not provide sufficient data for diagnosing reinforcement corrosion. With the addition of corrosion rate, however, a more reliable result is obtained, allowing definition of the extension of the zone to be repaired. It also helps with the evaluation of these structures for repairs.
机译：这项工作展示了在祖利亚大学（LUZ）的E腐蚀中心研究中心获得的经验，该研究使用电化学测量来评估，诊断和修复带有锈蚀钢筋的混凝土结构。该作品讨论了三个重要案例：马拉开波大桥，盐处理湾和奥林匹克游泳池。首先对这些结构进行目视检查，以挑选出要使用电化学技术和混凝土的物理化学分析进行详细检查的元素/组件。腐蚀电位（Ecorr）和腐蚀速率（Icorr）电化学测量用于选择混凝土物理化学分析区域。这一点非常重要，因为它可以保证足够的样本，而不必提取非代表性的核。这些评估确定电位测量不能提供足够的数据来诊断钢筋腐蚀。然而，随着腐蚀速率的增加，获得了更可靠的结果，从而可以确定待修复区域的延伸范围。它还有助于评估这些结构的维修情况。

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