Optimization of Accelerated Destructive Degradation Testing of Cementitious Materials for Their Performances Qualification under Aggressive Environments: The Case of Carbonation

Table 11

Optimal solution under different two- or three-level scenarios.

Stress	SI1 (S1 = 300 Pa, S2 = 20,000 Pa, S3 = 40,000 Pa)	SI2 (S1 = 30 Pa, S2 = 25,000 Pa, S3 = 50,000 Pa)	SI3 (S1 = 30 Pa, , S3 = 50,000 Pa)
	35 (59.3%)	35 (59.3%)	39 (66.1%)
	6 (10.2%)	6 (10.2%)
	18 (30.5%)	18 (30.5%)	20 (33.9%)
	1	1	1
	1	1
	2	1	4
	5	7	3
	2	2
	2	3	2
Total duration	5 months	7 months	8 months
	7	5	13
	3	3
	9	6	10
Sample size	59	59	59
Cost	1091	1099	1091
	98.9	58.1	115.7
Accuracy ε (%)	28.2	22.4	30.4