Development of a method for obtaining Nyquist plots identical to those of the three-electrode AC impedance method in concrete-embedded rebar without requiring electrical continuity
Development of a method for obtaining Nyquist plots identical to those of the three-electrode AC impedance method in concrete-embedded rebar without requiring electrical continuity
复制标题
开发一种在混凝土埋入钢筋中获得与三电极交流阻抗法相同的奈奎斯特图且无需电气连续性的方法
DOI：
10.1007/s10800-023-01891-2
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发表时间：
2023
影响因子：
2.9
通讯作者：
Akinobu HIrama
中科院分区：
文献类型：
--
作者：
Nagate Hashimoto;Motoki Tanaka;Yasuaki Kaneko;Yoshitaka Kato;Akinobu HIrama
钢筋锈蚀是钢筋混凝土结构劣化的原因之一。混凝土结构中钢筋的锈蚀状态可以用交流阻抗法测量。典型的三电极AC阻抗方法需要钢筋和测量装置之间的电连续性，这可能是不方便的，因为结构需要被诸如钻孔的过程部分损坏。本研究提出了一种方法，以获得相同的阻抗谱的三电极方法通过修改的电极配置的四电极方法。这种测量的步骤如下：首先，将对电极和测量参比电极放置在测量点处;将另一个对电极放置在离测量点足够的距离处;将另一个参比电极放置在离测量点和所施加的对电极两者足够的距离处;并将WE_I连接到所施加的对电极，将WE_V连接到参比电极，将CE连接到所施加的对电极，将RE连接到所施加的对电极，并测量阻抗。本文通过物理实验和数值实验验证了上述方法的有效性。在该物理实验的条件下（混凝土W/C = 54.2%，覆盖50 mm），要求测量点和施加对电极之间的距离为约1.3m。测量点和参考匹配电极之间的距离也要求为约1.3 m。
Corrosion of steel bars is one cause of deterioration in reinforced concrete structures. The state of corrosion of rebar in concrete structures can be measured using the AC impedance method. The typical three-electrode AC impedance method requires electrical continuity between the rebar and the measurement device, which may be inconvenient because the structure requires to be partly damaged by processes such as drilling. The present study proposes a method to obtain the same impedance spectra as the three-electrode method by modifying the electrode configuration of the four-electrode method. The procedures for such a measurement are as follows: first, place the counter electrode and the measurement reference electrode at the measurement point; place another counter electrode at a sufficient distance from the measurement point; place another reference electrode at a sufficient distance from both the measurement point and the applied counter electrode; and connect WE_I to the applied counter electrode, WE_V to the reference electrode, CE to the applied counter electrode, and RE to the applied counter electrode, and measure the impedance. In this paper, the physical experiments and the numerical experiments demonstrate the validity of the above method. Under the conditions of this physical experiment (concrete W/C = 54.2%, cover 50 mm), the distance between the measurement point and the application counter electrode was required to be about 1.3 m. The distance between the measurement point and the reference matching electrode was also required to be about 1.3 m.Graphical abstract
影响因子：
2.9
作者：
Andrade, C.;Martinez, I.;Castellote, M.
通讯作者：
Castellote, M.
影响因子：
3.9
作者：
Koleva, D. A.;van Breugel, K.;Fraaij, A. L. A.
通讯作者：
Fraaij, A. L. A.