Table 6.
Carbon emissions and energy consumption of the base layer in the material production phase for the three technologies.
| Material | Material consumption (t) | Energy consumption per unit (MJ/t) | CO2 emissions per unit (kg/t) | Energy consumption (MJ) | CO2 emissions (kg) | |
|---|---|---|---|---|---|---|
| Removal and reconstruction | Cement | 215 | 3181.00 | 870 | 683,192 | 186,852 |
| Aggregate | 4295 | 37.00 | 3.5 | 158,932 | 15,034 | |
| Water | 215 | 3.00 | 0.2 | 644 | 43 | |
| Total | / | / | / | 842,768 | 201,929 | |
| Cold central plant recycling | Cement | 250 | 3181.00 | 870 | 794,390 | 217,265 |
| Water | 300 | 3.00 | 0.2 | 899 | 60 | |
| Total | / | / | / | 795,289 | 217,325 | |
| FDR-PC | Cement | 243 | 3181.00 | 870 | 772,855 | 211,375 |
| Water | 316 | 3.00 | 0.2 | 948 | 63 | |
| Total | / | / | / | 773,802 | 211,438 |