Detection of thin layers into concrete with static and CMP measurements

Van der Wielen, Audrey; Courard, Luc; Nguyen, Frédéric

doi:10.1109/icgpr.2012.6254921

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Detection of thin layers into concrete with static and CMP measurements

Van der Wielen, Audrey; Courard, Luc; Nguyen, Frédéric

2012 • In 2012 14th International Conference on Ground Penetrating Radar (GPR)

Peer reviewed

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https://hdl.handle.net/2268/126234

DOI
10.1109/icgpr.2012.6254921

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Keywords :

Ground penetrating radar; thin layers; concrete; reflection coefficient

Abstract :

[en] Most concrete bridge decks contain a thin waterproofing layer, whose complex GPR signature can affect the detection of disorders or delaminations into the slab. In this study, we characterized the detection limits of our 2.3 GHz antenna for the detection of thin layers, with static and CMP measurements. In this last configuration, we showed that the radiation pattern and the reflection coefficient estimation are key parameters to use the inversion of the amplitude versus offset (AVO) curves for the estimation of the layer parameters. The theoretical results were compared to the results of FDTD simulations, performed with GprMax2D, and to laboratory measurements, performed on concrete slabs or sand containing thin layers.

Disciplines :

Civil engineering

Author, co-author :

Van der Wielen, Audrey ; Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil

Courard, Luc ; Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil

Nguyen, Frédéric ; Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géophysique appliquée

Language :

English

Title :

Detection of thin layers into concrete with static and CMP measurements

Publication date :

June 2012

Event name :

The 14th International Conference on Ground Penetrating Radar

Event organizer :

Tongji University

Event place :

Shanghai, China

Event date :

du 4 au 8 juin 2012

Audience :

International

Main work title :

2012 14th International Conference on Ground Penetrating Radar (GPR)

Publisher :

IEEE

ISBN/EAN :

978-1-4673-2663-6
978-1-4673-2661-2
978-1-4673-2660-5

Pages :

534-539

Peer reviewed :

Peer reviewed

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique

Available on ORBi :

since 26 June 2012

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