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Thermophysical properties of materials employed in the current investigation [24].
| Material | Density (kg/m3) | Specific heat (J/kg.K) | Thermal conductivity (W/m.K) |
|---|---|---|---|
| Polyethylene | 920 | 2300 | 0.35 |
| HDPE | 950 | 2300 | 0.45 |
| LDPE | 920 | 3400 | 0.34 |
| PVC | 1380 | 960 | 0.15 |
| Sand-silica | 2210 | 750 | 1.4 |
| Concrete pile | 2200 | 1000 | 1.65 |
| Clay | 1700 | 1800 | 1.2 |
| Sandy-clay | 1960 | 1200 | 2.1 |
| Water | 998.2 | 4182 | 0.6 |
