ABSTRACT
Secondly the implementation of non-destructive techniques in the field of grout injections will be studied, not only for the evaluation of the quality of the deteriorated or injected massive (masonry or concrete) before and after injection. The aim is to develop the NDT-technology that should enable on-line surveying of grout injections. The benefit would be the possibility to alter the injection parameters during the injection itself so that the desired injection result can be obtained. Geo-electrical survey of masonry already proved to be a reliable non-destructive tool for this purpose (Janssens 1993; Keersmaekers 2003; Keersmaekers et al. 2004; Keersmaekers et al. May 2006; Keersmaekers et al. Nov 2006; Marchisio et al. 2002; Van Rickstal and
Vanhellemont 2002; Van Rickstal et al. 2003; Van Rickstal et al. 2006; Venderickx 2000).
