Communication Dans Un Congrès Année : 2024

Corrosion measurement of reinforced concrete in a bridge by GPR scanning, crack's analysis and dielectric measurement

Résumé

In this study, GPR scanning, crack's analysis and dielectric measurement have been used together to study corrosion levels of a bridge's pillar. (1) Scanning by GPR, the positions of the rebars could be found, which helped to grid the test areas and calculate the mean time difference between directed wave and the reflected wave (R-D). ( 2) The frequency dependent dielectric permittivity of the zones in the grids could be measured by an open-ended probe, and then the signal's attenuation factor could be calculated. (3) The density of the cracks could be estimated by accounting the pixel numbers in the tested area. Comparing the mean time difference in (R-D) by GPR, the attention calculated by the tested dielectric permittivity, and the density of cracks in the tested areas, the unhealthy area with high corrosion level could be estimated.

Fichier principal
Vignette du fichier
Corrosion_measurement_of_reinforced_concrete_in_a_bridge_by_GPR_scanning_cracks_analysis_and_dielectric_measurement.pdf (602.89 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04934935 , version 1 (17-02-2025)

Licence

Identifiants

  • HAL Id : hal-04934935 , version 1

Citer

Benhui Fan, Frederic Bosc, Philippe Foucher, Cyrille Fauchard. Corrosion measurement of reinforced concrete in a bridge by GPR scanning, crack's analysis and dielectric measurement. 20th International Conference on Ground Penetrating Radar (GPR 2024), Jun 2024, Changchun, China. ⟨hal-04934935⟩

Collections

56 Consultations
128 Téléchargements

Partager

  • More