Strength Characteristics and Slope Stability of Expansive Soil from Pingdingshan, China

Table 2

Shear strength parameters of expansive soil at the dry density of 1.5 g/cm³.

Water content (%)	Angle of internal friction (°)	Cohesive force (kPa)
19.11	25.0	44.0
20.00	21.7	46.0
21.12	18.0	58.0
24.00	13.0	61.2
25.00	10.0	50.0
26.00	9.5	43.2
30.00	4.0	45.1
31.00	0.0	33.51
33.00	0.0	24.16