Title: Enhancement of geo-electrical techniques for NDT of masonry
Authors: Van Rickstal, Filip
Van Gemert, Dionys
Keersmaekers, Robrecht
Posen, Dries
Van Rickstal #
Issue Date: Jul-2008
Publisher: CRC Press
Host Document: Proc. of the 6th Int. Seminar on Structural Analysis of Historical Constructions vol:2 pages:1053-1059
Conference: Structural Analysis of Historical Constructions edition:6 location:Bath date:2-4 July 2008
Abstract: A geophysical resistivity measuring device was modified to perform automatic monitoring of historical masonry structures before, during and after grout injection for consolidation purposes. The obtained image is called a geo-electrical tomography. The technique was used to evaluate the deteriorated masonry of the recently partly collapsed Maagdentoren in Zichem, Belgium. The results of these measurements are dis-cussed. An important improvement is the adaptation of the “cross-borehole” measurement technique for ma-sonry. With this technique, a constant resolution in depth is achieved. Laboratory tests, using an adaptation of the “cross-borehole” technique, enabled to show the resistivity distribution changing during the injection of a test specimen with a hydraulic grout.
ISBN: 978-0-415-48107-6
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Building Materials and Building Technology Section
# (joint) last author

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