A proposal is made to measure atom/ion mobility/diffusion in GIC samples. Vesuvio is ideal to explore diffusion of ions bound by ~0.5-5eV bond energies and covalently bound atoms above ~5eV. Glass and hardened GIC should give characteristic spectra, relative mobilities of F,Na,Al,Si,Sr readily apparent. Proposed coordination increase during setting is expected to show atom/ion-specific diffusion-reduction with time. A novel approach is proposed, combining ab intio electronic structure and dynamics, with deep INS on Vesuvio to characterise GIC structure/dynamics, during and post-setting towards a series of GIC design rules, of significant economic/social impact. 1.determine absolute & relative atom/ion (F-,P,Na+,Ca2+,Al,Si,Sr) mobility in GIC;2.Quantify Al-/Ca-chelation strength from mobility/diffusion results;4.Quantify coupling of diffusion to GIC setting (24hrs) & resultant properties.