Effect of Axial Pressure on Lime-Treated Expansive Soil Subjected to Wetting and Drying Cycles

Table 1

Main geotechnical properties of the tested soils.

Properties	Natural soil	Soil treated with 5% of CaO (7 d of curing)
Specific gravity	2.70	2.68
Liquid limit (%)	63.00	32.70
Plastic limit (%)	25.00	23.00
Sand (>0.075 mm, %)	3.80	2.80
Silt (0.005 mm to 0.075 mm, %)	23.60	27.20
Clay (<0.005 mm, %)	72.60	70.00
USCS classification	MH	CL
Maximum dry density (Mg/m^3)	1.83	1.77
Optimum moisture content (%)	14.30	15.40
Free expansion rate (%)	60	—