Optimization of Self-Compacting Concrete Containing Blast-Furnace Slag Compositions

Table 4

Planning matrix and properties of concrete mixtures at experimental points.

No.	Experimental plan						Properties of concrete mixtures
	Coded factors			Natural factors
	X1	X2	X3	C, kg/m^3	SP, %	GS, kg/m^3	W, l/m^3	W/C	S, сm	ΔS2, %
1	+1	+1	+1	600	1	200	156	0.26	28	2.9
2	+1	+1	−1	600	1	0	149	0.25	28	0.0
3	+1	−1	+1	600	0	200	334	0.56	26	23.5
4	+1	−1	−1	600	0	0	264	0.44	26	34.9
5	−1	+1	+1	200	1	200	126	0.63	28	3.2
6	−1	+1	−1	200	1	0	146	0.73	25	7.8
7	−1	−1	+1	200	0	200	216	1.08	26	21.0
8	−1	−1	−1	200	0	0	173	0.86	26	40.2
9	+1	0	0	600	0.5	100	173	0.29	28	8.6
10	−1	0	0	200	0.5	100	113	0.56	28	11.4
11	0	+1	0	400	1	100	116	0.29	28	1.3
12	0	−1	0	400	0	100	218	0.55	26	27.8
13	0	0	+1	400	0.5	200	144	0.36	28	4.1
14	0	0	−1	400	0.5	0	119	0.30	25	12.1
15	0	0	0	400	0.5	100	123	0.31	28	8.0
16	0	0	0	400	0.5	100	124	0.31	28	8.0
17	0	0	0	400	0.5	100	125	0.31	28	8.0