Hierarchical Order of Influence of Mix Variables Affecting Compressive Strength of Sustainable Concrete Containing Fly Ash, Copper Slag, Silica Fume, and Fibres

Table 5

Experimental results from the references ([6–8]).

Reference	% of CS	28-day compressive strength, N/mm^2	Ratio	w-b
	Control mix	36.2	—	0.50
	10	38.8	1.00	0.50
	20	40.2	0.97	0.50
[17]	40	38.7	1.00	0.50
	50	38.1	1.02	0.50
	60	37.7	1.03	0.50
	80	27.8	1.40	0.50
	100	29.0	1.34	0.50
	Control mix	88.1	—	0.35
	30	87.1	1.00	0.32
[16]	50	101.3	0.86	0.31
	70	104.4	0.83	0.30
	80	101.6	0.86	0.29
	100	107.4	0.81	0.27
	Control mix	76.9	—	0.35
	10	79.6	1.00	0.35
	20	74.5	1.07	0.35
[10]	40	76.4	1.04	0.35
	50	77.8	1.02	0.35
	60	69.0	1.15	0.35
	80	63.8	1.25	0.35
	100	63.4	1.26	0.35

Ratio = Compressive strength of control mix/compressive strength of concrete containing copper slag.