Table 4 Mixture design of specimens with calcium carbonate sludge and the corresponding calculated cost and CO2 emmission.
From: Geoenvironmental use of CaCo3 sludge in subgrade soil for a greener sugar industry
Mix no. | Ordinary Portland cement, OPC (%) | Calcium carbonate sludge, CaCO3 (%) | Unqualified crushed rocks (%) | Cost per cubic meter, USD/m3 | Production emission, kg CO2/ton |
|---|---|---|---|---|---|
SC0-0 | 0 | 0 | 100 | 10.0 | 135 |
SC0-10 | 0 | 10 | 90 | 9.3 | 125 |
SC1-10 | 1 | 10 | 89 | 10.0 | 133 |
SC2-10 | 2 | 10 | 88 | 10.7 | 141 |
SC3-10 | 3 | 10 | 87 | 11.4 | 149 |
SC0-20 | 0 | 20 | 80 | 8.5 | 115 |
SC1-20 | 1 | 20 | 79 | 9.2 | 123 |
SC2-20 | 2 | 20 | 78 | 9.9 | 131 |
SC3-20 | 3 | 20 | 77 | 10.6 | 139 |
SC0-30 | 0 | 30 | 70 | 7.8 | 105 |
SC1-30 | 1 | 30 | 69 | 8.5 | 113 |
SC2-30 | 2 | 30 | 68 | 9.2 | 121 |
SC3-30 | 3 | 30 | 67 | 9.9 | 129 |
