The Influence of Ground Fly Ash on Cement Hydration and Mechanical Property of Mortar

Table 2

The content of Ca(OH)₂ in the hardened cement paste at different ages (%).

Age	Cement	FA-25%	GFA-25%	Δ1	Δ2
3 d	16.60	13.30	13.14	0.86	0.69
28 d	18.36	15.73	13.03	1.96	−0.74
90 d	21.20	15.52	14.76	−0.38	−1.14
360 d	21.48	15.48	13.36	−0.63	−2.75