ORBi: Louis Arnaud - GPR detection of saturated areas into concrete in the presence of a water gradient

Reference : GPR detection of saturated areas into concrete in the presence of a water gradient


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/2268/126235

Title :	GPR detection of saturated areas into concrete in the presence of a water gradient
Language :	English
Author, co-author :	Louis, Arnaud [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
	Van der Wielen, Audrey [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
	Courard, Luc [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
	Nguyen, Frédéric [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géophysique appliquée >]
Publication date :	Jun-2012
Main document title :	2012 14th International Conference on Ground Penetrating Radar (GPR)
Publisher :	IEEE
Pages :	477-482
On invitation :	No
Audience :	International
ISBN :	978-1-4673-2660-5
	978-1-4673-2663-6
	978-1-4673-2661-2
Event name :	The 14th international conférence on Ground Penetrating Radar
Event date :	du 4 au 8 juin 2012
Event organizer :	Tongji University
Event place (city) :	Shanghai
Event country :	Chine
Keywords :	[en] Ground Penetrating Radar ; Saturated areas ; concrete ; reflection coefficient ; modelisation ; water gradient
Abstract :	[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.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/126235

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Restricted access	article_Impact_Of_Water_Gradient_revised.pdf		Author preprint	599.71 kB	Request copy

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Open access	GeMMe Poster Arnaud.pdf		-	1.08 MB	View/Open

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