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- Title
Investigation of the Mechanism of Hidden Defects in Epoxy Asphalt Pavement on Steel Bridge Decks Under Moisture Diffusion Using Nondestructive Detection Techniques.
- Authors
Nie, Wen; Wang, Duanyi; Yan, Junjian; Zhang, Xiaoning; Jankowski, Łukasz
- Abstract
This study conducts a rigorous analysis of the moisture diffusion mechanism that undermines the adhesive layer of epoxy asphalt (EA) pavement on steel bridge decks, thereby fostering latent distresses. Furthermore, a novel and highly efficacious approach for detecting these concealed distresses is introduced. The findings of water vapor permeability tests conclusively reveal that the moisture diffusion coefficients of the upper and lower layers of the EA pavement stand at 0.1238 mm2/s and 0.0879 mm2/s, respectively, highlighting this disparity as the primary trigger for concealed issues like pavement delamination and swelling. Leveraging the combined capabilities of three‐dimensional ground‐penetrating radar (3D‐GPR) and infrared thermography, this research reliably detects, identifies, and pinpoints concealed defects at three strategic locations on the steel bridge deck. The integration of these two technologies has exhibited remarkable proficiency in identifying concealed damages. Consequently, this study lays a substantial foundation for evaluating and detecting concealed distress in EA pavements atop steel bridge decks.
- Subjects
BRIDGE floors; ASPHALT pavements; IRON & steel bridges; INFRARED imaging; THERMOGRAPHY
- Publication
Structural Control & Health Monitoring, 2024, Vol 2024, p1
- ISSN
1545-2255
- Publication type
Academic Journal
- DOI
10.1155/2024/6490775