Electromagnetic property selection for GPR modelling in corrosive concrete environments

被引：1
|
作者：
Tesic, Ksenija [1 ]
Baricevic, Ana [1 ]
Serdar, Marijana [1 ]
Gucunski, Nenad [2 ]
机构：
[1] Univ Zagreb, Fac Civil Engn, Dept Mat, Fra Andrije Kac Mios 26, Zagreb 10000, Croatia
[2] Rutgers State Univ, Dept Civil & Environm Engn, 500 Bartholomew Rd, Piscataway, NJ 08854 USA
来源：
DEVELOPMENTS IN THE BUILT ENVIRONMENT | 2024年 / 17卷
关键词：
Concrete; Corrosion; Chlorides; Moisture; NDT; Numerical modelling; GROUND-PENETRATING RADAR; SERVICE LIFE PREDICTION; REINFORCEMENT CORROSION; DIELECTRIC-PROPERTIES; STEEL; MOISTURE; WAVE; ATTENUATION; PERFORMANCE; DURABILITY;
D O I：
10.1016/j.dibe.2023.100302
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Understanding the mechanisms that alter the ground penetrating radar (GPR) electromagnetic wave propagation as a result of reinforcement corrosion is pivotal for accurate assessment of the corrosion of reinforced concrete (RC) structures. Nevertheless, the behaviour of the GPR signal during the complex corrosion process is not thoroughly understood. In this study, finite-difference time-domain (FDTD) modelling was used to analyse the effects of corrosion-related parameters, i.e., moisture, chlorides, and corrosion products, on the electric field strength. This study aims to expand the database on numerical simulations of GPR signal behaviour in corrosive environments. It also addresses the knowledge gap in modelling the frequency-dependent properties of concrete and iron oxides. Modelling approach adopted in the study was validated with experimental data obtained on laboratory specimens that correspond to the numerical models in terms of geometry and condition.
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页数：13
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