Electrical Resistivity of Concrete for Durability Evaluation: A Review

Table 2

Details of the reinforcements and measurement methods used to record corrosion rate.

Refs	Reinforcement			Cause of corrosion	Corrosion rate
	Φ (mm)	Length (mm)	Cover depth (mm)		Technique	Details	Correction for ohmic drop
[23]	10	200	1, 10, 20	Carbonation	—	—	—
[8]	10	300	50 & 75	Not studied (NS) (only effect of rebar presence on resistivity measurement was considered)	—	—	—
[24]	16	300	50	Cyclic ponding with sea water	—	—	—
[25]	4	110, 160, 200	Various (53.5–100)	NS	—	—	—
[26]	8	40	80	NS	—	—	—
[27]	13, 19, 25	410	20, 30, 40	NS	—	—	—
[28]	10	250	150	NaCl solution/marine exposure	LPR	Embedded steel rebar	N
[30]	10	—	25	NS	—	—	—
[45]	16	200	50	NaCl solution/marine exposure	—	—	—
[46]	NR	NR	NR	NaCl solution	LPR	NR	NR
[47]	NR	NR	70	NaCl solution	—	—	—
[49]	16	NR	42	NaCl solution	NR	Embedded steel rebar	NR
[50]	8	150	10 or 30	NaCl solution	LPR	Embedded CE & RE on the surface	N
[60]	10	200	15	NaCl solution	—	—	—
Authors	10	914	19–38	NaCl solution	LPR	Embedded steel rebar	Y