Advances in Civil Engineering

Research Article

The Effect of Activators on the Mechanical Properties and Microstructure of Alkali-Activated Nickel Slag

Table 2

Mix proportion of alkali-activated nickel slag mortar excited by different alkali activators.


Group ID	Cementitious materials (%)					Admixture (%)		Water-binder ratio	Sand-mortar ratio
Group ID	Cement	Nickel slag	Na₂SiO₃	NaOH	Na₂CO₃	Citric acid	Water-reducing agent	Water-binder ratio	Sand-mortar ratio

C	100	—	—	—	—	—	—	0.35	1 : 2
NS10	—	100	10	—	—	—	—	0.35	1 : 2
NS13-N2-J1	—	100	13	—	—	2	1	0.35	1 : 2
NS15-N2-J4	—	100	15	—	—	2	4	0.35	1 : 2
NH6.56	—	100	—	6.56	—	—	—	0.35	1 : 2
NH8.52	—	100	—	8.52	—	—	—	0.35	1 : 2
NH9.84	—	100	—	9.84	—	—	—	0.35	1 : 2
NS7.5-NC2.17	—	100	7.5	0	2.17	—	—	0.35	1 : 2
NS9.75-NC2.82	—	100	9.85	0	2.82	—	—	0.35	1 : 2
NS11.25-NC3.26-J2	—	100	11.25	0	3.26	—	2	0.35	1 : 2

Notations: C: cement; NS: Na₂SiO₃; NH: NaOH; NC: Na₂CO₃; N: citric acid; J: reducing agent. The numbers after NS, NH, and NC indicate the mass percentage of alkali activators in the nickel slag mass; the numbers after N and J indicate the mass percentage of admixture in the mass of the cementitious material.