Electrical Resistance Tomography imaging of concrete
Electrical Resistance Tomography imaging of concrete
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DOI：
10.1016/j.cemconres.2009.08.023
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发表时间：
2010-01-01
影响因子：
11.4
通讯作者：
Kaipio, Jari P.
中科院分区：
文献类型：
--
作者：
Karhunen, Kimmo;Seppanen, Aku;Kaipio, Jari P.
我们将电阻层析成像(ERT)应用于混凝土的三维成像。在ERT中，使用连接到目标表面的电极阵列将交流电注入目标，并使用相同的电极测量产生的电压。这些边界测量用于重建目标的内部(3D)电导率分布。在钢筋混凝土中，金属相(钢筋和纤维)、裂缝和气孔、水分梯度以及氯离子在基质中的分布与导电性相反。虽然电学测量已被广泛用于表征混凝土的特性，但到目前为止，将ERT应用于混凝土成像的初步结果还没有发表。本文的目的是用具体的铸件样品进行可行性评价。结果表明，ERT是一种可行的混凝土无损检测方法。(C)2009爱思唯尔有限公司。保留所有权利。
We apply Electrical Resistance Tomography (ERT) for three dimensional imaging of concrete. In ERT, alternating currents are injected into the target using an array of electrodes attached to the target surface, and the resulting voltages are measured using the same electrodes. These boundary measurements are used for reconstructing the internal (3D) conductivity distribution of the target. In reinforced concrete, the metallic phases (reinforcing bars and fibers), cracks and air voids, moisture gradients, and the chloride distribution in the matrix carry contrast with respect to conductivity. While electrical measurements have been widely used to characterize the properties of concrete, only preliminary results of applying ERT to concrete imaging have been published so far. The aim of this paper is to carry out a feasibility evaluation with specifically cast samples. The results indicate that ERT may be a feasible modality for non-destructive evaluation of concrete. (C) 2009 Elsevier Ltd. All rights reserved.