Study on Water Characteristic Curve and Shear Characteristics of Typical Unsaturated Silty Clay in Shaoxing

Table 5

Shear strength parameters corresponding to conventional direct shear test and equal suction direct shear test.

Conventional direct shear test	Volume water content/%	44.9	43.3	41.8	40.4	37.4	34.8	30.8	28.8	24.4	22.3	20.9
	Matric suction/kPa	1	25	38	50	75	100	150	200	300	400	500
	Total cohesion/kPa	17.8	21.6	23.7	36.1	44.1	52.1	55.3	60.2	65.7	70.4	74.1
	Effective internal friction angle/°	20.3	20.1	20.5	21.3	21.9	22	22.8	22.9	23.5	23.8	24.4
Equal suction direct shear test	Matric suction/kPa	1	25	/	50	/	100	150	200	300	400	500
	Total cohesion/kPa	17.8	23.4	/	35.5	/	47.4	57.1	63.1	69.6	75.5	79.2
	Effective internal friction angle/°	20.3	20.9	/	22.4	/	23.4	24.1	24.3	24.9	24.7	25.2