Stress Corrosion Behavior of Ungrouted Pretensioned Concrete Beams

Table 5

Potentiodynamic polarization parameters for the rebar and prestressed steel in chloride-contaminated concrete.

System	Potentiodynamic polarization parameters
	Rebar			Prestressed steel
	Ecorr (mV)	Icorr (mA·cm^2) × 10^−4	Corrosion rate (mmpy) × 10^−3	Ecorr (mV)	Icorr (mA·cm^2) × 10^−4	Corrosion rate (mmpy) × 10^−3
Control	−250	0.455	0.527	−340	0.630	0.730
1% NaCl	−291	0.622	0.721	−424	0.648	0.771
2% NaCl	−388	1.007	1.167	−518	1.186	1.374
3% NaCl	−458	1.315	1.524	−594	1.374	1.586