Analysis on Physical and Mechanical Properties of Red Mud Materials and Stockpile Stability after Dilatation

Table 1

Basic physical parameters of three kinds of red mud.

Type of sample	Wet density	Specific gravity	Pore rate	Liquid limit (%)	Plastic limit (%)	Plasticity index
Bayer red mud from wetting process	1.75 ± 0.01	1.22 ± 0.01	2.72 ± 0.02	48.89 ± 0.06	35.77 ± 0.54	13.12 ± 0.49
Bayer red mud from drying process	1.85 ± 0.02	1.22 ± 0.01	2.46 ± 0.01	45.19 ± 0.42	30.78 ± 0.36	14.41 ± 0.19
Sintering red mud	1.58 ± 0.01	1.06 ± 0.01	2.85 ± 0.02	79.01 ± 0.41	59.47 ± 0.22	19.54 ± 0.36