A Cost-Benefit Methodology for Selecting Analytical Reinforced Concrete Corrosion Onset Models

Table 10

Results of sensitivity analysis for two models of chlorination (Collepardi (Col.) and Luping) at 2.5 cm [17].

Indicator	Model	Concrete		C45			C35			C25
		Age (years)		10	25	50	10	25	50	10	25	50
Elasticity	Col.	Env.		1	1	1	1	1	1	1	1	1
		Mat.		3.1	1.31	0.74	0.52	0.27	0.17	0.31	0.17	0.11
	Luping	Env.		1	1	1	1	1	1	1	1	1
		Mat.		1.6	1.24	1.04	0.47	0.3	0.21	0.28	0.18	0.13
				−1.32	−1.82	−2.04	−0.51	−0.42	−0.36	−0.31	−0.26	−0.23
Pearson’s coef.	Col.	Env.		0.35	0.63	0.81	0.98	0.99	0.99	0.71	0.87	0.94
		Mat.		0.93	0.78	0.59	0.16	0.08	0.05	0.69	0.46	0.32
	Luping	Env.		0.5	0.53	0.55	0.38	0.47	0.55	0.58	0.67	0.74
		Mat.		0.74	0.62	0.54	0.58	0.47	0.4	0.49	0.38	0.3
				−0.41	−0.55	−0.61	−0.72	−0.74	−0.73	−0.62	−0.61	−0.58
Bias factor	Col.	Env.		0.43	1.48	2.06	−0.31	−0.32	−0.34	0.22	0.48	0.63
		Mat.		15.59	−18.17	−47.09	−0.94	−0.94	−0.94	−84.68	−63.28	−47.25
	Luping	Env.		45.95	45.91	40.6	−4.41	−7.53	−10.39	−96.74	−100.66	−99.12
		Mat.		54.18	69.64	75.25	−82.08	−85.2	−87.9	−15.11	−34.59	−44.97
				−7.6	−22.41	−32.6	−4.23	−7.32	−10.15	−81.25	−65.77	−54.07
Output’s std.	Col.	Env.		0.01	0.08	0.17	0.09	0.14	0.16	0.16	0.2	0.22
		Mat.		0.03	0.1	0.12	0.01	0.01	0	0.15	0.1	0.07
	Luping	Env.		0.05	0.08	0.11	0.1	0.13	0.15	0.16	0.19	0.21
		Mat.		0.08	0.1	0.11	0.16	0.13	0.11	0.14	0.11	0.09
				0.05	0.09	0.12	0.2	0.21	0.2	0.18	0.18	0.17

Env., environmental parameter; Mat., material parameter.