Utilization of Palm Oil Fuel Ash as Binder in Lightweight Oil Palm Shell Geopolymer Concrete

Table 1

Chemical composition (%) of class-F FA and POFA.

	SiO2	Al2O3	Fe2O3	CaO	MgO	K2O	SO3	LOI
Class-F FA	57.6	28.9	5.8	0.2	0.9	0.9	0.2	3.6
POFA	63.4	5.5	4.2	4.3	3.7	6.3	0.9	6.0