Table 3 Critical water content of other soil samples

From: Research and property analysis of the Ming dynasty silt cultural layer at Zhouqiao archaeological site

Sample

Plastic limit/%

Liquid limit/%

Plasticity index

Zhouqiao AS25

23.2

38.5

15.2

Silt from Zhengzhou Section of the Yellow River26

26.40

63.60

37.20

Silt from Ji’nan Section of the Yellow River27

7.84

23.56

15.72

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