Effect of Different Activators on Rheological and Strength Properties of Fly Ash-Based Filling Cementitious Materials

Table 2

Technical indexes of fly ash.

Item	Unit of measurement	Technical index	Test value
Fineness	%	≤8 (0.08 screen residue)	1.1
Loss on ignition	%	≤5.0	7.69
Water demand	%	≤95	90
Water content	%	≤1.0	0.03
SO3	%	≤3.0	0.06
Free CaO	%	≤4.0	Trace amount