Experimental Study on Swelling Behavior and Its Anisotropic Evaluation of Unsaturated Expansive Soil

Table 2

Summary of testing program conditions.

Type	Test ID	Dry unit weight γd0 (kN/m^3)	Water content (%)	Net normal stress σz-ua (kPa)	Matric suction ua- (kPa)
VS test	VS-0	16.0	18.0	0	200⟶100⟶50⟶20⟶10⟶5⟶0
	VS-12.5			12.5
	VS-25			25
	VS-50			50
	VS-100			100
LS test	LS-0			0
	LS-12.5			12.5
	LS-25			25
	LS-50			50
	LS-100			100