Group

Cracking area (mm²)

Number of cracks (条)

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）

JZ

274.9

21

0.24

6.54

44

286

Sp35

211.6

20

0.20

5.29

42

220

Sp41

337.6

25

0.30

6.75

52

352

W141

231.9

18

0.20

6.44

38

242

W171

395.4

30

0.40

6.59

63

412

JP

194.1

22

0.20

4.41

46

202