Influence of Waste Marble Dust on the Improvement of Expansive Clay Soils

Table 1

Average geotechnical properties of used ECS.

Test	Value
Liquid limit (%)	42.12
Plastic limit (%)	25
Plasticity index (%)	17.12
Linear shrinkage (%)	10.7
Free swell (%)	95
Specific gravity	2.68
Sand (4.75–0.075 mm) (%)	2.12
Silt (0.075–0.005 mm) (%)	71.85
Clay (<0.005 mm) (%)	26.03
Type of soil (USCS)	CI