Comparison of Environmental Impacts of Two Alternative Stabilization Techniques on Expansive Soil Slopes

Table 1

Physical parameters of expansive soils.

Properties	Expansive soils	Nonexpansive soil
Specific gravity	2.75	2.72
Liquid limit (%)	71.2	52.0
Plastic limit (%)	31.5	22.0
Natural moisture content (%)	31.6	30.0
Optimum moisture content (%)	16.3	16.0
Maximum dry density (g/cm^3)	1.74	1.70
Free swelling index, FSI (%)	57.5	10.0
Natural unit weight (KN/m^3)	19.0	18.0
Cohesion (kPa)	33.3	38.0
Friction angle (°)	15.6	24.0