“…Previous applications of µCT have been devoted to the monitoring of hydro-chemomechanical processes (Comina et al, 2008), to the detection of dessication cracks (Gerbrenegus et al, 2006;Mukunoki et al, 2006), to the visualisation of diffusion/hydration phenomena, to the study of fluid movements (Rolland et al, 2003;Rolland et al, 2005;Carminati et al, 2006;Koliji et al, 2006) and to the investigation of the microstructure of compacted bentonite based materials (Kozaki et al, 2001, Van Geet et al, 2005and Kawaragi et al, 2009. In this work, µCT was coupled to MIP for further microscopic investigation of a compacted bentonite/sand sample.…”