Ground-penetrating radar (GPR) tomographic imaging and estimation of the volumetric water content of a viaduct pillar using the simultaneous iterative reconstruction technique algorithm

IF 4.1 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Ndt & E International Pub Date : 2025-05-30 DOI:10.1016/j.ndteint.2025.103448

Muhammet Ertuğrul Kara , Aysel Şeren , Fatih Köroğlu , Hilal Alemdağ

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引用次数: 0

Abstract

We efficiently modified a ground-penetrating radar (GPR) tomographic measurement setup for use on reciprocal surfaces on a concrete viaduct pillar for determining of the volumetric water content (VWC) of the pillar. Tomograms were generated to detect the relative dielectric permittivity (RDP) distribution using the simultaneous iterative reconstruction technique (SIRT) algorithm by picking the first arrivals of the acquired GPR traces. The VWC was calculated from this distribution using a polynomial approach in the literature. As a result of this data analysis, the RDP of the studied viaduct pillar was determined as ∼5, and its VWC was found to be between 4 % and 6 %. Additionally, common-offset GPR data were acquired to monitor the fractures and inner elements of reinforced concrete and compare the calculated tomograms with the VWC of the pillar. In the tomograms, some parts with high water content were observed to have a low amplitude in the GPR sections. Finally, instead of time-consuming and destructive techniques for determining the VWC of concrete structures, this tomography approach can be applied as a non-destructive alternative.

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基于同步迭代重建技术的高架桥柱体含水率层析成像与估算

我们有效地修改了一个探地雷达（GPR）层析测量装置，用于混凝土高架桥支柱的互易表面，以确定支柱的体积含水量（VWC）。利用同步迭代重建技术（SIRT）算法生成层析图，通过选取获取的探地雷达迹线的第一到达点，检测相对介电常数（RDP）分布。在文献中，VWC是用多项式方法从这个分布计算出来的。根据该数据分析，所研究的高架桥支柱的RDP确定为~ 5，其VWC在4%至6%之间。此外，获取共偏移GPR数据，监测钢筋混凝土的裂缝和内部构件，并将计算的层析图与矿柱的VWC进行比较。在层析图中，在探地雷达剖面上观察到一些含水量高的部位振幅较低。最后，代替耗时和破坏性的技术来确定混凝土结构的VWC，这种层析成像方法可以作为一种非破坏性的替代方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.