TY - GEN
T1 - Large-scale analysis of dielectric and mechanical properties of pavement using GPR and LFWD
AU - Tosti, F.
AU - Adabi, S.
AU - Pajewski, L.
AU - Schettini, G.
AU - Benedetto, A.
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - Over the last few years ground-penetrating radar (GPR) has proved to be an effective instrument for pavement applications spanning from physical to geometrical inspections of roads. In this paper, the new challenge of inferring mechanical properties of road pavements and materials from their dielectric characteristics was investigated. A pulsed GPR system with ground-coupled antennas, 600 MHz and 1600 MHz center frequencies of investigation, was used over a 4 m×30 m test site with a flexible pavement structure. A spacing of 0.40 m between the GPR acquisition tracks was considered both longitudinally and transversely in order to configure a square regular grid mesh of 836 nodes. Accordingly, the Young's modulus of elasticity was measured on each grid node using light falling weight deflectometer (LFWD). Therefore, a semi-empirical model for predicting strength properties of pavement was developed by comparing the observed elastic modulus and the electromagnetic response of substructure on each grid node. A good agreement between observed and modeled values was found, thereby showing great promises for large-scale mechanical inspections of pavements using GPR.
AB - Over the last few years ground-penetrating radar (GPR) has proved to be an effective instrument for pavement applications spanning from physical to geometrical inspections of roads. In this paper, the new challenge of inferring mechanical properties of road pavements and materials from their dielectric characteristics was investigated. A pulsed GPR system with ground-coupled antennas, 600 MHz and 1600 MHz center frequencies of investigation, was used over a 4 m×30 m test site with a flexible pavement structure. A spacing of 0.40 m between the GPR acquisition tracks was considered both longitudinally and transversely in order to configure a square regular grid mesh of 836 nodes. Accordingly, the Young's modulus of elasticity was measured on each grid node using light falling weight deflectometer (LFWD). Therefore, a semi-empirical model for predicting strength properties of pavement was developed by comparing the observed elastic modulus and the electromagnetic response of substructure on each grid node. A good agreement between observed and modeled values was found, thereby showing great promises for large-scale mechanical inspections of pavements using GPR.
KW - Young's modulus of elasticity
KW - ground-penetrating radar
KW - light falling weight deflectometer
KW - road pavement
UR - http://www.scopus.com/inward/record.url?scp=84919667178&partnerID=8YFLogxK
U2 - 10.1109/ICGPR.2014.6970551
DO - 10.1109/ICGPR.2014.6970551
M3 - Conference contribution
AN - SCOPUS:84919667178
T3 - Proceedings of the 15th International Conference on Ground Penetrating Radar, GPR 2014
SP - 868
EP - 873
BT - Proceedings of the 15th International Conference on Ground Penetrating Radar, GPR 2014
A2 - Lambot, Sebastien
A2 - Giannopoulos, Antonis
A2 - Pajewski, Lara
A2 - Andre, Frederic
A2 - Slob, Evert
A2 - Craeye, Christophe
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th International Conference on Ground Penetrating Radar, GPR 2014
Y2 - 30 June 2014 through 4 July 2014
ER -