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Table 4 Analysis of the measured concrete cover thicknesses of the columns

From: Effect of the concrete cover thickness ratio on the post-yield stiffness of bridge columns with partially unbonded unstressed steel strands

Column

Loading direction

\(c_{c,D}\)(mm)

\(c_{c,A}\)(mm)

\(\alpha\)(%)

Offset of core concrete centroid

CCC

 + (E)

30

28

-0.1

3.0 mm to the east

-(W)

33

0.4

CSC40

 + (E)

40

33

2.2

8.5 mm to the east

-(W)

50

0.9

CSC30

 + (E)

30

48

1.5

14.0 mm to the west

-(W)

20

4.9

CSC20

 + (E)

20

25

4.4

0.5 mm to the west

-(W)

24

7.1