Research Article

Strength Improvement of Black Cotton Soil Using Plastic Bottles and Crushed Glass Wastes

Table 3

Geotechnical properties of the natural soil.

Geotechnical propertiesValues

Grain analysisGravel (%)2.4
Sand (%)2.9
Silt (%)38.6
Clay (%)56.1
Natural moisture content (%)44
Average specific gravity (g/cm3)2.67
Free swell (%)128
Linear shrinkage (%)25
Liquid limit (%)87
Plastic limit (%)34.4
Plasticity index (%)52.6
Maximum dry density (g/cm3)1.4
Optimum moisture content (%)25.1
California Bearing Ratio2.6
Unconfined Compressive Strength (kPa)Native soil53
Remolded91.2