Regression Analysis of Bond Parameters between Corroded Rebar and Concrete Based on Reported Test Data

Table 2

Parameters of pull-out specimens with deformed rebar.

References No.	Specimen size (mm)	Corrosion level (%)	(MPa)	(mm)	(mm)	No. of specimens	(mm)	Stirrup confinement	Reinforcement position	Test environment	Reinforcement type
[3]	100×100×100	0–9.95	22.13	12	44	14	80	No	Center	Direct current	Ribbed bars
[4]	100×100×100	0–9.72	22.13	12	44	14	80	No	Center	Accelerated corrosion	Ribbed bars
[5]	100×100×100	0–8	13.98, 21.1, 23.63	12	44	21	5d	No	Center	Electro-migration	Ribbed bars
[6]	150×150×150	0–4.66	62.7, 73.4	12	69	39	60	No	Center	Current density of 0.25mA/cm^2	Ribbed bars
[7]	120×120×120	0–20	30.9	12	54	20	5d	Each half	Center	Current density of 200uA/cm^2	Ribbed bars
[8]	152×254×280	0–79.74	30	12	63.5	No	102	Yes	Side	Direct current (0.4 A)	Ribbed bars
[9]	140×140×180	0–9	52.1	20	60	24	4d	Each half	Center	Direct current (0–2 A)	Ribbed bars
[14]	200×200×200	0–14.45	20.7, 44.4	18	91	40	80	Yes	Center	Current density of 150μA/cm^2	Ribbed bars
[16]	140×140×180	0–9.02	54.15	20	60	24	4d	Each half	Center	Current density of 1.214mA/cm^2	Ribbed bars
[17]	100×100×200	0–2.3709	38.3	16, 20	42, 40	20	5d	Each half	Center	Electro-migration (DC voltage of 60V)	Ribbed bars
[18]	150×150×150	0–9.06	24.81	18, 20, 22	30	17	50	No	Side	Accelerated corrosion	Ribbed bars
[20]	100×100×150	0–11.8	33.5	16	42	5	50	No	Center	Accelerated corrosion	Ribbed bars
[22]	140×140×180	0–6.1	52.1	20	60	24	4d	Each half	Center	Direct current (0–2 A)	Ribbed bars
[23]	150×150×150	0–5.95	41.9	18	66	12	100	Each half	Center	Electro-migration and wetting-drying cycle	Ribbed bars
[24]	140×140×180	0–27.9	50.8	20	60	31	4d	Each half	Center	Direct current (0–2 A)	Ribbed bars
[25]	150×150×150	0–2.3	21, 32	25	62.5	30	4d	No	Center	Accelerated corrosion	Ribbed bars
[26]	120×120×120	0–0.8	30.1	12	54	12	5d	No	Center	Current density of 0.25mA/cm^2	Ribbed bars
	180×180×180	0–4.5	30.1	18	81	12	5d	No	Center	Current density of 0.25mA/cm^2	Ribbed bars
[27]	140×140×180	0–15.27	31.4	20	60	20	3d	Yes	Center	Current density of 0.01–0.02mA/mm^2	Ribbed bars
[28]	150×150×150	0–8.95	23, 51	14	15, 30, 45	90	50	No	Side	Direct current (0–5 A)	Ribbed bars
[29]	140×140×180	0–20	64	20	60	21	4d	Yes	Center	Maximum of 0.1 A per specimen	Ribbed bars
[30]	150×150×150	0–12	-	12	69	6	4d	No	Center	Direct current (17.5–59mA)	Ribbed bars
[31]	150×150×200	0–2.5	28.3	13	68.5	21	3d	No	Center	Accelerated corrosion	Ribbed bars
	150×150×200	0–8.8	28.3	13	68	40	39	No	Center	Output of 24 V DC and 12 A	Ribbed bars
[32]	150×150×150	0–6.69	29	12	69	13	70	No	Center	Current density of 100μA/cm^2	Ribbed bars
[33]	104×104×104	0–24	24.7, 33, 42.1	13	45.5	6	78	Each half	Side	Maximum of 1 A per specimen	Ribbed bars
[34]	10d×10d×10d	0–4.9	30.1	12, 18	4.5d	24	5d	No	Center	Current density of 0.25mA/cm^2	Ribbed bars
[35]	160×160×250	0–15.9	35.8	20	35, 45, 55	27	200	Yes	Side	Direct current (0–1 A)	Ribbed bars
[36]	150×150×150	0–9.8	24.83, 26.51, 25.04	20	65	45	100	No	Center	Direct current (0–2 A)	Ribbed bars
[37]	150×250×300	0-14.65	33	20	35	16	100	Yes	Side	Current density of 500μA/cm^2	Ribbed bars
[38]	175×175×350	0–5.19	-	19	78	11	75	No	Center	Direct current (0.15 A)	Ribbed bars
[39]	150×150×150	0–9.06	24.81	18, 20, 22	30	34	100	No	Side	Direct current	Ribbed bars
[40]	150×250×300	0–10.19	50	20	35	43	100	Yes	Side	Current density of 400–600μA/cm^2	Ribbed bars