Application of Ground Penetrating Radar in the Assessment of Aged Roads: Focus On Complex Structures Under Different Weather Conditions

作者：Enas Abdelsamei, Diaa Sheishah, Boglárka Runa, Olivér Balogh, Csaba Tóth, Péter Primusz, Sándor Trenka, Boudewijn van Leeuwen, Zalán Tobak, Dávid Gergely Páll, György Sípos · 发表于：Pure and Applied Geophysics · 年份：2024 · DOI：10.1007/s00024-024-03604-y · 被引用次数：10 · 研究领域：Geophysical Methods and Applications、Seismic Waves and Analysis、Microwave Imaging and Scattering Analysis

Abstract Ground penetrating radar (GPR) has been widely used to assess asphalt and pavement, especially in quality testing for newly constructed roads. However, its usage has been limited in regard to aged roads. Thus, this study focuses on the applicability of GPR to extract diverse information regarding structure, thickness, and various conditions, including the moisture content of an aged road section that has undergone repeated renewals. First, two methods were employed to calculate the thickness and dielectric values; the reflection amplitude and ground truth methods. The analysis was done by RADAN 7 software. Based on the findings, the average error of thickness on the same day between continuous GPR and the core data were 2.87% and 8.72%, respectively. Second, dielectric analysis of three structural units was performed under different moisture conditions. As a result, the average dielectric values of macadam (3, 3.3, and 4), surface asphalt layer (4, 7.06, and 8.31), and cement-treated base (4.83, 10.88, and 11.88) were determined under dry, medium-wet, and wet conditions, respectively. The volumetric water difference ( f ) within the pavement was also estimated. As for the asphalt, macadam, and cement-treated base, the difference in the volume fraction of water ( f ) was 0.06, 0.01, and 0.1, respectively, under dry and wet conditions, and 0.04, 0.004, and 0.09, respectively, under dry and medium-wet conditions. Overall, the findings demonstrate that reasonably accurat...