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

Table 3

Comparison of different optimization criteria.

Stress level	Optimality criteria					Accuracy ε (%)
S1 = 300 Pa, S2 = 20,000 Pa (SI1)	V-optimality	186.8	5.68e + 32	2.26e − 2	[42.7, 96.2] year	38.6
	D-optimality	198.8	7.67e + 32	2.11e − 2	[41.8, 97.1] y	39.8
	A-optimality	201.8	3.46e + 32	1.98e − 2	[41.6, 97.3] y	40.1
S1 = 30 Pa, S2 = 50,000 Pa (SI2)	V-optimality	115.7	9.14e + 33	6.73e − 3	[48.4, 90.5] y	30.4
	D-optimality	123.4	1.70e + 34	7.01e − 3	[47.7, 91.2] y	31.3
	A-optimality	115.9329	9.697e + 33	0.00656	[48.4, 90.6] y	30.4

CI: confidence interval for ϕ = 0.9.