Time-Varying Compressive Strength Model of Aeolian Sand Concrete considering the Harmful Pore Ratio Variation and Heterogeneous Nucleation Effect

Table 2

Main chemical composition of the used sand.

Samples	SiO2	Al2O3	CaO	Fe2O3	MgO	Others	pH value
River sand	79.57	6.4	2.97	7.88	1.07	1.91	7.05
Yuyang sand	78.85	8.02	4.79	6.22	1.15	0.97	7.41
Shenmu sand	80.88	7.43	3.28	6.83	0.69	0.89	7.49