Factors

The maximum width of cracks (mm)

Average cracking area A (mm²/条)

The number of cracks in unit area B (条/m²)

Total area of the cracks in the unit area C (mm²/m²）

W/B

0.08

5.36

10

167

Sp

0.10

1.46

11

132

W

0.10

0.15

25

170

PCA

0.20

4.26

63

206

Gradation

0.04

2.14

2

84