Experimental Study on Bond Performance and Damage Detection of Corroded Reinforced Concrete Specimens

Table 10

The analysis of the relative nonlinear coefficient and relative ultrasonic velocity.

Specimen	Δnmax		Δnmax/
C0-35-s	1.47	0.11	13.36
C0-45-s	1.70	0.09	18.89
C0-55-s	1.55	0.11	14.09
C7-35-s	0.82	0.14	5.86
C7-45-s	1.02	0.14	7.28
C7-55-s	0.63	0.07	9.0
C15-35-s	0.4	0.04	10.0
C15-45-s	0.6	0.06	10.0
C15-55-s	0.42	0.02	21