Reference : GPR detection of saturated areas into concrete in the presence of a water gradient
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/126235
GPR detection of saturated areas into concrete in the presence of a water gradient
English
Louis, Arnaud mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
Van der Wielen, Audrey mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
Courard, Luc mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
Nguyen, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géophysique appliquée >]
Jun-2012
2012 14th International Conference on Ground Penetrating Radar (GPR)
IEEE
477-482
Yes
No
International
978-1-4673-2660-5
978-1-4673-2663-6
978-1-4673-2661-2
The 14th international conférence on Ground Penetrating Radar
du 4 au 8 juin 2012
Tongji University
Shanghai
Chine
[en] Ground Penetrating Radar ; Saturated areas ; concrete ; reflection coefficient ; modelisation ; water gradient
[en] In the concrete, saturated areas are most of the time limited by a transition zone, presenting a water gradient. This transition zone can affect the GPR wave’s reflection and decrease the reflection coefficient by comparison to the coefficient that would be obtained on a sharp interface. To quantify the impact of the water gradient on the reflection coefficient, we performed finite differences simulations. They showed that the reflection coefficient was reduced by 70% if the thickness of the transition zone was larger than 2/5 of the wavelength. Laboratory experiments, using hygrometric sensors for the water content control, confirmed this trend.
Researchers ; Professionals
http://hdl.handle.net/2268/126235

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