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A platform for research: civil engineering, architecture and urbanism
Use of capacitive and GPR techniques for the non-destructive evaluation of cover concrete
This study, conducted using the GPR and capacitive approaches in both experimental and numerical modes, has revealed the potential for estimating the water content of concrete slabs from sensors that operate according to the two techniques. These procedures remain highly complementary and small differences can be offered to make them more or less well suited for one-off or continuous surveying, along with specifications of the need or not for post-processing. It is thus felt that the capacitive technique can be efficiently used in situ to provide accurate results with respect to cover concrete, for instance prior to extensive GPR investigations. The two techniques can also be implemented in a complementary manner, one to gain speed and the other for accuracy. Under the described conditions and by taking the capacitive technique accuracy, ease and moderate price into account, it is likely that the number of devices utilizing such direct capacitance measurements will rise, either for monitoring (permanent surveying that targets identified influential parameters) or for inspection (local and instantaneous permittivity assessments), in combination with GPR surveys.
Use of capacitive and GPR techniques for the non-destructive evaluation of cover concrete
This study, conducted using the GPR and capacitive approaches in both experimental and numerical modes, has revealed the potential for estimating the water content of concrete slabs from sensors that operate according to the two techniques. These procedures remain highly complementary and small differences can be offered to make them more or less well suited for one-off or continuous surveying, along with specifications of the need or not for post-processing. It is thus felt that the capacitive technique can be efficiently used in situ to provide accurate results with respect to cover concrete, for instance prior to extensive GPR investigations. The two techniques can also be implemented in a complementary manner, one to gain speed and the other for accuracy. Under the described conditions and by taking the capacitive technique accuracy, ease and moderate price into account, it is likely that the number of devices utilizing such direct capacitance measurements will rise, either for monitoring (permanent surveying that targets identified influential parameters) or for inspection (local and instantaneous permittivity assessments), in combination with GPR surveys.
Use of capacitive and GPR techniques for the non-destructive evaluation of cover concrete
Einsatz von kapazitiver und Bodenradar-Technik zur zerstörungsfreien Bewertung von Betonüberzügen
Derobert, Xavier (author) / Iaquinta, Jean (author) / Klysz, Gilles (author) / Balayssac, Jean-Paul (author)
NDT&E International ; 41 ; 44-52
2008
9 Seiten, 10 Bilder, 4 Tabellen, 30 Quellen
Article (Journal)
English
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