Grading assessment of steel bar corrosion in concrete structures based on naive Bayesian model and spontaneous magnetic flux leakage effect

Journal of Engineering and Applied Science

Table 5 12-mm steel bar diameter model parameter settings (mm)

Rust length l/mm	Concrete cover Thickness (mm)	Rust time T/h	Rust rate α	Rust depth h/mm	Rust width 2a+2b/mm
100	6	12	0.09	1.70	13.40
100	6	24	0.18	3.40	16.80
100	6	36	0.27	5.10	20.21
100	6	48	0.36	6.81	23.61
100	6	60	0.45	8.51	27.01
100	6	72	0.54	10.21	30.42
100	6	84	0.63	11.91	33.82
100	6	96	0.72	13.61	37.22
100	6	108	0.81	15.31	40.63
100	6	120	0.90	17.01	44.03