Using Alkali-Activated Cementitious Materials to Solidify High Organic Matter Content Dredged Sludge as Roadbed Material

Table 3

Chemical compositions of the solidification materials.

Material	SiO2	Al2O3	CaO	Fe2O3	R2O	SO3	MgO	TiO2	P2O5	LOI
PC 32.5	21.86	4.25	63.59	1.25	0.55	2.42	2.19	0.12	—	3.75
FA	46.45	38.40	3.45	3.78	1.03	0.64	0.63	1.50	0.6	2.87
Slag	32.54	16.36	38.16	0.30	0.64	1.15	7.35	0.59	—	0.93
PG	11.68	2.96	30.53	0.348	0.365	46.55	0.478	—	1.65	3.57

Note: R₂O: alkali metal oxide; LOI: loss of ignition at 1000°C.