Water-Cement-Density Ratio Law for the 28-Day Compressive Strength Prediction of Cement-Based Materials

Table 1

Chemical composition of PC, SF, GGBS, and FA.

Materials	Chemical composition (%)									Loss on ignition (%)
	SiO2	Al2O3	Fe2O3	CaO	MgO	SO3	Equivalent alkali	Free CaO	Cl^−
PC	20.13	20.13	3.67	63.89	1.61	3.31	0.24	0.52	0.035	2.50
SF	88.52	1.23	2.11	5.45	0.11	—	—	—	—	1.53
GGBS	36.50	20.30	1.54	31.40	5.31	2.50	0.29	—	—	1.59
FA	51.98	28.37	5.64	4.30	0.84	0.95	—	—	—	6.03