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

Figure 1

Schematic view of the UC oedometer: (1) vertical digital displacement gauge, (2) reaction frame, (3) pressure transducer, (4) data logger, (5) air pump, (6) water pump, (7) solenoid valve, (8) bubble flushing cell, and (9) stop-flow valve.