Table 6 Analysis data of influential parameters.

From: Investigation of the shear performance of multi-key block bonding surfaces without connecting reinforcement for precast elements

Parameters

β

CI Interval

t-statistic

p-value

Î’1

CV

Roughness (BS ttpe)

34.2

[26.2, 42.3]

8.57

0

32.8

0.12

Confining stress

144.1

[128.1, 160.1]

18.1

0

273.8

0.06

Concrete grade

1.06

[0.3, 1.8]

2.95

0.0051

0.09

0.34

  1. β refers to regression coefficients;β1 refers to standardized regression coefficients༛Standard error CI refers to confidence༛p-value refers to probability value.
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