The C-S-H nucleation in the presence of the additives was investigated following an adapted experimental setup of Picker et al. . The homogeneous, supersaturated solution is created by titrating a CaCl 2 solution (0.03 mmol L -1 ) into a vessel containing 100 mL of Na 2 SiO 3 solution (3.7 mmol L -1 ) and 20 mL NaOH (1 mol L -1 ) at a constant speed of 0.08 mL min -1 . The titration curves for C-S-H nucleation are shown in Figure . The deviation between the measurements was checked using three repeated measurements (Figure ).