TY - GEN
T1 - Nondestructive evaluation of asphalt overlaid bridge deck with automated acoustic scanning system and ground penetration radar
AU - Pashoutani, Sepehr
AU - Sun, Hongbin
AU - Zhu, Jinying
N1 - Publisher Copyright:
Copyright © SHMII 2019. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Conventional acoustic based methods are not effective on asphalt bridge deck due to high attenuation of elastic waves in asphalt. Ground penetration radar (GPR) is the only applicable NDT method for evaluation of bridge decks with asphalt overlay. In this study, an automated acoustic scanning system and GPR were combined to evaluate an asphalt overlaid bridge deck under repair. GPR was used to scan the bridge deck with asphalt overlay before and after repair. When the asphalt layer was removed during repair, the bare concrete deck was scanned using both GPR and the acoustic scanning system. Equipped with high precision positioning GPS and non-contact acoustic sensors, the automated acoustic scanning system can provide a high-resolution delamination map of the bridge deck in real time.
AB - Conventional acoustic based methods are not effective on asphalt bridge deck due to high attenuation of elastic waves in asphalt. Ground penetration radar (GPR) is the only applicable NDT method for evaluation of bridge decks with asphalt overlay. In this study, an automated acoustic scanning system and GPR were combined to evaluate an asphalt overlaid bridge deck under repair. GPR was used to scan the bridge deck with asphalt overlay before and after repair. When the asphalt layer was removed during repair, the bare concrete deck was scanned using both GPR and the acoustic scanning system. Equipped with high precision positioning GPS and non-contact acoustic sensors, the automated acoustic scanning system can provide a high-resolution delamination map of the bridge deck in real time.
UR - http://www.scopus.com/inward/record.url?scp=85091657847&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85091657847
T3 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019 - Conference Proceedings
SP - 1466
EP - 1471
BT - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure
A2 - Chen, Genda
A2 - Alampalli, Sreenivas
PB - International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII
T2 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019
Y2 - 4 August 2019 through 7 August 2019
ER -