Table 2.

Fitting electrochemical data of the applied coatings in the simulated concrete pore (SCP) solutions.

Specimens	Time (Day)	Rs (Ω·cm2)	Qc (Ω−1·cm−2·sn)	n	Rc (Ω·cm2)	Qdl (Ω−1·cm−2·sn)	n	Rct (Ω·cm2)	χ2	Equivalent Circuit
Epoxy	5	2799	3.33 $\times$ 10−10	9.3 $\times$ 10−1	2.76 $\times$ 104	–	–	–	0.02710	R(QR)
	15	2266	3.11 $\times$ 10−10	1	1.96 $\times$ 104	7.65 $\times$ 10−5	4.48 $\times$ 10−1	1.63 $\times$ 104	0.01538	R(QR)(QR)
Epoxy-CaCO3	5	0.04873	4.54 $\times$ 10−11	1	1.59 $\times$ 105	–	–	–	0.02607	R(QR)
	15	132	7.10 $\times$ 10−11	2.45 $\times$ 10−1	9.53 $\times$ 104	1.01 $\times$ 10−5	1	7.16 $\times$ 104	0.00910	R(QR)(QR)
Epoxy-3 wt% SLS/CaCO3	5	750	1.22 $\times$ 10−10	9.45 $\times$ 10−1	5.20 $\times$ 1010	–	–	–	0.04723	R (QR)
	15	2930	1.09 $\times$ 10−10	1	5.16 $\times$ 1010	1.40 $\times$ 10−5	6.12 $\times$ 10−1	1.30 $\times$ 1010	0.02086	R(Q(R(QR)))
Epoxy-5 wt% SLS/CaCO3	5	3166	9.03 $\times$ 10−11	1	9.55 $\times$ 1010	–	–	–	0.02707	R (QR)
	15	1662	1.40 $\times$ 10−10	9.79 $\times$ 10−1	4.54 $\times$ 1010	7.94 $\times$ 10−7	9.99 $\times$ 10−1	4.36 $\times$ 1010	0.03265	R(Q(R(QR)))