“…These procedures have been effective in identifying and evaluating heritage structures, such as roads and pavements (Bai and Sinfield, 2020;Ortega-Ramírez et al, 2020;Asadi et al, 2020), bridges (Kilic and Unluturk, 2016), and tunnels (Kilic and Eren, 2018). GPR has also been applied for finding hidden targets (Kilic, 2017), moisture inspection (Shapovalov et al, 2020;Kilic, 2015), rebar corrosion assessment (Jazayeri et al, 2019), and locating sub-surface faults, such as cracks, voids, and delamination (Kilic and Eren, 2018;Johnston et al, 2018).…”