Fig. 5 shows the variation of T2 ge

Fig. 5 shows the variation of T2 geometric mean values of all systems with hydration. It could be clearly seen from Fig. 5 that the T2 geometric average values of the paste with nanomaterials were smaller than that of the control group without nanomaterials in the whole hydration process. In addition, it was worth noting that the accelerating effect of NS and NA on cement showed mainly 6 hbefore hydration, and slowed down in the later period, which was because the nucleation of NS and NA mainly acted on the induction period, and the nanomaterials were wrapped by hydration products in the later stage. In addition, it was observed that the nucleation effect of NA was better than that of NS, which may be due to the fact that the specific surface area of NS was larger than that of NA (Table 2), which was more likely to agglomerate, leading to poor nucleation efficiency of NS. With the deepening of cement hydration, the fresh paste changed into hardened cement stone.