Table 1.
Some geotechnical properties of the expansive subgrade soil.
| SN | Soil properties | Values |
|---|---|---|
| 1 | Natural moisture content (%) | 44.18 |
| 2 | Liquid limit (%) | 79.60 |
| 3 | Plastic limit (%) | 31.41 |
| 4 | Plasticity index (%) | 48.19 |
| 5 | Maximum dry density (g/cm3) | 1.23 |
| 6 | Optimum moisture content (%) | 34.06 |
| 7 | Specific gravity | 2.70 |
| 8 | Free swell (%) | 74.00 |
| 9 | CBR (%) | 2.01 |
| 10 | Classification (USCS) | CH, Highly plastic inorganic clay |
| 11 | Classification (AASHTO) | A-7-6, Poor clay |
| 12 | Cohesion (kPa) | 40 |
| 13 | Internal friction angle (°) | 0 |
| 14 | Poison ratio | 0.40 |