Influence of Concrete Sludge Addition in the Properties of Alkali-Activated and Non-Alkali-Activated Fly Ash-Based Mortars

Table 2

Chemical composition (% wt) and pH values of raw materials.

Sample	Na2O	K2O	CaO	MgO	Fe2O3	Al2O3	SiO2	SO3	LOI	pH
F	0.92	1.14	22.58	1.87	5.08	17.85	46.83	3.68	2.92	13.75
S75	0.18	0.28	53.40	2.58	1.96	3.20	2.28	0.46	35.42	13.22
S200	0.18	0.09	39.95	1.56	1.18	3.55	15.01	0.50	38.17	11.87
LF	0.02	0.05	53.10	1.15	0.20	0.42	0.54	0.10	43.53	10.52