Study on Mechanical Properties of the Expansive Soil Treated with Iron Tailings Sand

Table 1

Basic physical properties of expansive soil.

Water content (%)	Specific gravity	Void ratio	Liquid limit (%)	Plastic limit (%)	Cohesion (kPa)	Internal friction angle (°)	Free swelling index (%)
25.7	2.68	0.74	45.5	22.3	74.3	27.6	52.5