Table 2.
Composition of the investigated materials used in the life cycle assessment (LCA) analysis.
| Materials | Unit | C | PA0 | PA20 | G | FibC | FibNi | A4 |
|---|---|---|---|---|---|---|---|---|
| CEM II/A-L 42.5R | kg/m3 | 280.00 | 300.00 | 300.00 | - | - | - | - |
| Sand | kg/m3 | 1000.00 | - | - | - | - | - | - |
| Gravel | kg/m3 | 400.00 | - | - | - | - | - | - |
| Fine gravel | kg/m3 | 200.00 | - | - | - | - | - | - |
| Marble sludge | kg/m3 | - | 146.00 | 171.00 | - | - | - | - |
| Crushed limestone | kg/m3 | - | 1648.00 | 1227.00 | 1288.83 | 1234.33 | 1234.33 | - |
| Plastic aggregate | kg/m3 | - | - | 140.00 | - | - | - | - |
| Fly ash | kg/m3 | - | 90.00 | 90.00 | 313.91 | 300.63 | 300.63 | - |
| Alkaline solution * | kg/m3 | - | - | - | 208.27 | 199.46 | 199.46 | - |
| Superplasticizer ** | L/m3 | - | 6.86 | 8.91 | - | - | - | - |
| Fibre | kg/m3 | - | - | - | - | 88.69 | 435.61 | - |
| Calcium aluminate cement | kg/m3 | - | - | - | - | - | - | 268.00 |
| Basalt | kg/m3 | - | - | - | - | - | - | 991.60 |
| Bauxite | kg/m3 | - | - | - | - | - | - | 964.80 |
| Graphite | kg/m3 | - | - | - | - | - | - | 268.00 |
| Silica sand | kg/m3 | - | - | - | - | - | - | 134.00 |
| Aluminium micropowder | kg/m3 | - | - | - | - | - | - | 107.20 |
| Steel | kg/m3 | - | - | - | - | - | - | 134.00 |
| Density | kg/m3 | 2410.00 | 2190.86 | 1936.91 | 1811.00 | 1823.11 | 2170.03 | 2170.03 |
* Sodium silicate R = 2 (molar SiO2/Na2O ratio) was used as the alkaline solution. ** Superplasticizer is a mix of Lignosulphonate: max. 35%; Naphthalene sulphonate: max. 30%; Melamine sulphonate: max. 45%; Polycarboxylate: max. 35%. Commercial material from the European Federation of Concrete Admixtures Associations Ltd. (EFCA) (EPD EFCA).