International Journal of Concrete Structures and Materials

Table 5 Activity index of cement mortar with compound-activated iron tailings powder

From: Effect of Iron Tailings as Fine Aggregate and Mineral Admixture on Strength and Microstructure of Cement Mortar

Serial number	Activation type	Activity index /%
Serial number	Activation type	3d	28d
NB5HB5	NaOH (5%) + HCl (5%)	87	88
HB5NB5	HCl (5%) + NaOH (5%)	91	90
HB5NA1	HCl (5%) + NaOH (1%)	89	91
HB5NA3	HCl (5%) + NaOH (3%)	92	93
HB5NA5	HCl (5%) + NaOH (5%)	82	79

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