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| Titel |
Recent advances in the evaluation of the strength and deformation properties of flexible pavements using GPR |
| VerfasserIn |
Fabio Tosti, Luca Bianchini Ciampoli, Andrea Benedetto, Amir M. Alani, Andreas Loizos, Fabrizio D'Amico |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250136185
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| Publikation (Nr.) |
 EGU/EGU2016-17169.pdf |
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| Zusammenfassung |
| Even though there is plenty of literature contributions related to the non-destructive
evaluation of road pavements using ground-penetrating radar (GPR), with several purposes
spanning from the layer thicknesses evaluation to the detection of highly wet spots in the
subsurface, there is still a lack of highly-reliable results concerning the mechanical
assessment of road pavements, by using this technology.
This work endeavours to face this topic and proposes a semi-empirical model for
predicting the elastic modulus of a flexible pavement, by employing GPR. Data were
collected over three different road sections within the districts of Madrid and Guadalajara,
Spain. In particular, GPR surveys were carried out at the speed of traffic over the roads N320
and N211 in the district of Gadalajara and the road N320 in the district of Madrid, for
a total of 39 kilometers, approximately. In particular, air-coupled radar systems
with a 1000 MHz center frequency antenna and two different 2000 MHz center
frequency antennas, mounted onto an instrumented vehicle, were here employed. The
calibration of the model was then performed by exploiting ground-truth data coming
from other non-destructive technologies. In more details, an instrumented lorry
equipped with a curviameter, namely, a deflection tool capable to collect and process
continuously and in real time the mechanical response of the flexible pavement,
was used in the above road sections. Promising results are here presented, and the
potential of GPR for monitoring the mechanical performances of a road network is also
proved.
Acknowledgement
The Authors thank COST, for funding the Action TU1208 "Civil Engineering
Applications of Ground Penetrating Radar." |
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