Use of Secondary Crystallization and Fly Ash in Waterproofing Materials to Increase Concrete Resistance to Aggressive Gases and Liquids

Table 4

Physical and chemical characteristics of materials.

Component	Content (%)
	CEM	Fly ash	Silica filler	Silica sand	Silica fume	Crystalline admixture
SiO2	18.28	56.82	99.1	99	91.97	11.5
Al2O3	4.96	28.93	0.27	0.3	0.1	2.34
Fe2O3	3.67	6.18	0.098	0.03	0.67	1.74
TiO2	—	2.02	0.38	0.05	0.02	0.129
CaO	64.9	1.79	—	—	0.19	45.7
MgO	2.00	1.31	—	—	1.24	0.734
MnO	—	0.03	—	—	—	0.102
K2O	1.02	1.79	—	—	3.32	0.387
Na2O	0.20	0.32	—	—	0.5	6.61
SO3	3.71	0.36	—	—	0.67	2.05
S	—	0.2	—	—	—	—
Specific surface (m^2/kg)	378	250	17.5	—	150 000	386