Table 1 Spearman matrix for concrete opening measurements.

From: Concrete crack opening forecasting by back propagation neural network and differential equation

Item

CCO of JB-1

CCO of JB-3

CCO of JB-7

WL

0.176

0.187

0.173

P

0.036

0.031

0.032

MA_T

0.628

0.441

0.738

MI_T

0.714

0.518

0.817

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