Influence of Cement Type and Water-to-Cement Ratio on the Formation of Thaumasite

Table 1

Chemical compositions of cement (wt.%).

Number	CaO	SiO2	Al2O3	Fe2O3	MgO	SO3	R2O	IL
OPC	61.27	21.04	6.94	2.36	1.32	1.94	0.97	3.76
SRC	63.52	22.75	4.12	4.37	2.19	2.01	0.68	0.33
SAC	41.53	8.10	30.32	3.41	3.60	11.93	—	0.65