שאלה | choose the correct statement:

choose the correct statement:

		Ettringite and monosulfate are hydrous calcium aluminium sulfate minerals, primary constituents of hydration of Portland cement concrete. Their formation plays an important role in the control of setting
		Ettringite and thaumasite are hydrous calcium aluminium sulfate minerals, primary constituents of hydration of Portland cement concrete. Their formation plays an important role in the control of setting
		Monosulfate and thaumasite are hydrous calcium aluminium sulfate minerals, primary constituents of hydration of Portland cement concrete. Their formation plays an important role in the control of setting
		Ettringite, thaumasite and monosulfate are hydrous calcium aluminium sulfate minerals, primary constituents of hydration of Portland cement concrete. Their formation plays an important role in the control of setting