Figure 13
Line-fits to the Al-CSH and tobermorite XRD reflections from the 5:1 batch experiments. The data in (a) show the growth of semi-crystalline Al-CSH at early reaction times (t < 2 h) followed by consumption. The data in (b) show the growth of tobermorite followed by crystallization. Line-fit analysis of the tobermorite growth curve was performed using the Avrami equation (Equation 4) in which k = 1.6 (± 0.8) × 10-4 s-1 and t o = 1.7. Blue lines represent ± 0.4 × 10-4 s-1 and red lines represent ± 0.8 × 10-4 s-1 errors in the calculated rate constant.