Effects of Nanosilica on Early Age Stages of Cement Hydration

Figure 9

(a) ESEM image of cement paste containing 2.5% NS, showing an interface of a NS agglomerate and cement matrix around. (b) BSE image of the paste with 2.5% NS content. Ca/Si weight ratios of different regions, measured by EDS analysis, are shown.

(a)

(b)