Experimental Investigation of Closed Porosity of Inorganic Solidified Foam Designed to Prevent Coal Fires

Table 1

Chemical composition of the accelerator.

Chemical composition	Na2CO3	11CaO⋅7Al2O3⋅3CaF2	SiO2	(Al2, Mg3)[Si4O10][OH]2⋅H2O	Al2O3	Fe2O3	CaO
Mass fraction (wt.%)	11	47.5	9.5	14	7	3	8
Molar mass (g/mol)	106	1564	60	450	102	160	56