Reliability Evaluation of Half-Cell Potential Measurement Using POD
Reliability Evaluation of Half-Cell Potential Measurement Using POD
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DOI：
10.1061/(asce)is.1943-555x.0000334
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发表时间：
2017-06
影响因子：
3.3
通讯作者：
S. Kessler;C. Gehlen
中科院分区：
文献类型：
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作者：
S. Kessler;C. Gehlen
摘要钢筋混凝土结构腐蚀检测是钢筋混凝土结构腐蚀检测的主要任务之一。最常用的检测方法是半电池电位法。根据半电池电位读数，通过将所研究的结构混凝土表面分配到检测到腐蚀或未检测到腐蚀的区域来进行判断。本文介绍了所谓的（腐蚀）检测概率曲线（POD）的发展。提出了一种计算钢筋混凝土结构POD的数值方法。缺陷（在这种情况下由钢筋的腐蚀（阳极作用）区域表示）可以检测到的概率取决于混凝土的电解电阻、混凝土覆盖层和选择用于检查的网格尺寸。如果在一个数据集中评估暴露在不同湿度条件下的部件，则腐蚀检测的可靠性可能会受到严重损害。如果考虑均匀暴露的表面…
AbstractThe detection of corrosion in reinforced concrete structures is one of the primary tasks during inspection. The most common inspection method used is the half-cell potential method. From half-cell potential readings, a judgment is made by allocating investigated structural concrete surfaces to either corrosion detected or corrosion not detected. In this paper, the development of so-called probability of (corrosion) detection (POD) curves is presented. A numerical approach is presented for evaluating the POD in reinforced concrete structures. The probability that a defect, in this case represented by a corroding (anodically acting) area of the reinforcement steel, can be detected was calculated in dependency to electrolytic resistance of concrete, to the concrete cover, and to the grid size chosen for inspection. If parts exposed to different moisture condition are evaluated in one data set, the reliability of corrosion detection can be strongly impaired. If uniformly exposed surfaces are considere...