. 2020 Dec 7;13(23):5576. doi: 10.3390/ma13235576

Table 3.

Mix proportions of alkali-activated coal gangue-slag concrete (kg/m³).

Specimens	Cementitious Materials		Water	Na₂SiO₃ Solution	NaOH Solution	Aggregates			Compressive Strength/MPa
Specimens	Coal Gangue	Slag	Water	Na₂SiO₃ Solution	NaOH Solution	Sand	Coal Gangue	Gravel	28 d	90 d
OPC	-	-	200	-	-	565	-	1050	46.1	53.2
W0	280	280	138.24	172.83	28.02	565	0	1050	62.1	66.8
W30	280	280	138.24	172.83	28.02	565	315	735	54.2	56.3
W50	280	280	138.24	172.83	28.02	565	525	525	53.2	53.4
W70	280	280	138.24	172.83	28.02	565	735	315	48.7	48.3
W100	280	280	138.24	172.83	28.02	565	1050	0	42.7	40.5
S30	280	280	138.24	172.83	28.02	565	315	735	58.4	59.3
S50	280	280	138.24	172.83	28.02	565	525	525	57.7	57.9
S70	280	280	138.24	172.83	28.02	565	735	315	55.1	55.2
S100	280	280	138.24	172.83	28.02	565	1050	0	49.3	48.7

W stands for uncalcined, S stands for calcined.