Which substance is used to retard the setting action of cement?
(a)	Cao	(b)	Al2O3
(c)	CaSO4.2H2O	(d)	Na2O+K2O

Question ID - 55426 | SaraNextGen Top Answer

Which substance is used to retard the setting action of cement?
(a)	Cao	(b)	Al2O3
(c)	CaSO4.2H2O	(d)	Na2O+K2O