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Communication Dans Un Congrès Année : 2020

3D GPR monitoring of artificial debonded pavement structures during accelerated tests

Résumé

The paper gives an overview of 3D GPR experiment to survey debonding areas within pavement structure during accelerated pavement testing on the IFSTTAR’s fatigue carrousel. Several artificial defects (tack-free, geotextile and sand-based) have been embedded during the construction phase between the top and the base layers. The data collection was organized in a two-stage experiments and covers the full life-cycle of the pavement structure. During the first stage that took place in 2012-13 leading to 300 kloading cycles, the structure revealed no clear degradation. Then, the second measurement campaign was performed in 2019 and lasted up to 720k loadings, until revealing a strongly degraded pavement surface. 3D GPR data were collected at 396, 500, 600 and 720 kloading cycles. They were completed by conventional 2D ground-coupled 1.5 and 2.6 GHz measurements in transverse and longitudinal directions. Radar data at 1.5 GHz are processed and compared on the three major defects.

Domaines

Génie civil
Fichier non déposé

Dates et versions

hal-04283411 , version 1 (13-11-2023)

Identifiants

Citer

Christophe Norgeot, Sophie Doué, Xavier Dérobert, Jean-Michel Simonin, Vincent Baltazart, et al.. 3D GPR monitoring of artificial debonded pavement structures during accelerated tests. 18th International Conference on Ground Penetrating Radar (GPR 2020), Jun 2020, Golden (Colorado), United States. pp.200-203, ⟨10.1190/gpr2020-054.1⟩. ⟨hal-04283411⟩
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