Table 2 Chemical properties of various materials used in the study.
From: Sustainable subgrade improvement with calcium carbide residue and rice husk ash
Properties | Units | Black cotton soil | Calcium carbide residue | Rice husk ash |
|---|---|---|---|---|
Calcium oxide (CaO) | (%) | 1.00 | 40.12 | 1.87 |
Magnesium oxide (MgO) | (%) | 2.10 | 0.10 | 0.30 |
Silicon dioxide (SiO2) | (%) | 76.90 | 2.66 | 86.80 |
Ferric oxide (Fe2O3) | (%) | 3.5 | 7.08 | 0.1 |
Aluminium oxide (Al2O3) | (%) | 12.50 | 11.42 | 0.23 |
Others | (%) | 2.36 | 1.68 | 4.47 |
