Utilization of Six Sigma in Quality Improvement of Recycled Aggregates Concrete

Table 8

Mix proportions by weight of the mixes used in the 3-level full-factorial DOE program.

Mix	Cement	Water	Normal coarse aggregate (1/2)	Normal coarse aggregates; (3/4)	Normal coarse aggregates; (3/8)	Recycled coarse aggregates (1/2)	Recycled coarse aggregates (3/4)	Recycled coarse aggregates (3/8)	Normal fine aggregates	Recycled fine aggregates
1	5.52	11.04	5.6	5.6	5.6	1.8	1.8	1.8	2.5	7.5
2	5.52	11.04	5.6	5.6	5.6	1.8	1.8	1.8	7.5	2.5
3	5.52	11.04	1.8	1.8	1.8	5.6	5.6	5.6	2.5	7.5
4	5.52	11.04	1.8	1.8	1.8	5.6	5.6	5.6	7.5	2.5
5	4.6	6.6	5.6	5.6	5.6	1.8	1.8	1.8	2.5	7.5
6	4.6	6.6	5.6	5.6	5.6	1.8	1.8	1.8	7.5	2.5
7	4.6	6.6	1.8	1.8	1.8	5.6	5.6	5.6	2.5	7.5
8	4.6	6.6	1.8	1.8	1.8	5.6	5.6	5.6	7.5	2.5
9	2.16	4.33	2.2	2.2	2.2	0.725	0.725	0.725	2	2
10	2.16	4.33	0.725	0.725	0.725	2.2	2.2	2.2	2	2
11	2.16	4.33	1.5	1.5	1.5	1.5	1.5	1.5	3	1
12	2.16	4.33	1.5	1.5	1.5	1.5	1.5	1.5	2	2
13	2.16	4.33	1.5	1.5	1.5	1.5	1.5	1.5	1	3
14	1.8	3.05	2.2	2.2	2.2	0.725	0.725	0.725	3	2
15	1.8	3	2.2	2.2	2.2	0.725	0.725	0.725	3	1
16	1.8	3	2.2	2.2	2.2	0.725	0.725	0.725	1	3
17	1.8	3	1.5	1.5	1.5	1.5	1.5	1.5	3	1
18	1.8	3.05	1.5	1.5	1.5	1.5	1.5	1.5	2	2
19	1.8	3	1.5	1.5	1.5	1.5	1.5	1.5	1	3
20	1.8	3	0.725	0.725	0.725	2.2	2.2	2.2	3	1
21	1.8	3	0.725	0.725	0.725	2.2	2.2	2.2	2	2
22	1.8	3	0.725	0.725	0.725	2.2	2.2	2.2	1	3
23	1.8	2.6	2.2	2.2	2.2	0.725	0.725	0.725	2	2
24	1.8	2.6	0.725	0.725	0.725	2.2	2.2	2.2	2	2
25	1.8	2.6	1.5	1.5	1.5	1.5	1.5	1.5	3	1
26	1.8	2.6	0.725	0.725	0.725	2.2	2.2	2.2	2	2
27	1.8	2.6	1.5	1.5	1.5	1.5	1.5	1.5	1	3