At later time, the NMR spectra showed eventually the formation of C-A-S-H. This was accompanied by the precipitation of gaylussite, as evidenced by the XRD results, and of an aluminate phase similar to the one formed in Na2Si1.7O4.4-activated pastes. Ultimately, these reactions, which happened after more than a week of hydration, were the ones that allowed the structuration of the paste and gave rise to some mechanical strength. However, this complex chemical path led to a slower hydration and gain in mechanical strength than in the hydroxide or silicate activated systems.