Table 3 The plasticity index under different content of calcium carbonate.

From: Study on microscopic pores and physico-mechanical properties of red clay modified by calcium carbonate

Content of calcium carbonate(%)

Plastic limit(%)

Liquid limit(%)

Plasticity index (IP)

Montmorillonite

(%)

0

37.53

49.68

12.15

36.1

5

24.88

39.23

14.35

33.0

10

24.35

39.38

15.03

30.7

15

23.43

39.91

16.48

28.5

20

24.38

38.67

14.29

26.1