(a)
(b)
(c)
(d)
Figure 7: Comparison of fitting value and actual value of relation curve between red mud volumetric water content and time under moisture desorption-moisture absorption hydraulic path conditions. (a) Moisture desorption test stage of sintering red mud. (b) Moisture absorption test stage of sintering red mud. (c) Moisture desorption test stage of Bayer red mud. (d) Moisture absorption test stage of Bayer red mud.