Table 3 Properties of the concrete.

From: Tests and deflection calculation method for circular concrete-filled steel tubular columns under very low-elevation lateral impact loads

Test coupons

1

2

3

4

5

6

7

8

9

Average

Concrete cube compressive strength fcu (MPa)

56.11

54.29

50.96

54.72

57.11

52.24

57.51

53.59

58.21

54.97

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