Research Article
Mechanical Properties and Leaching Characteristics of Geopolymer-Solidified/Stabilized Lead-Contaminated Soil
Table 2
Physicochemical properties of soil used in this study.
| | Properties | Raw soil | Lead-contaminated soil |
| | Water content (%) | 19.68 | 23.45 | | Specific gravity | 2.68 | 2.79 | | Liquid limit (%) | 41.6 | 39.2 | | Plastic limit (%) | 21.8 | 20.5 | | Optimum moisture content (%) | 23.5 | 21.9 | | Maximum dry density (g/cm3) | 1.72 | 1.78 | | Soil pH | 7.56 | 5.72 | | Clay particle fraction (<0.005 mm) (%) | 29.3 | 3.5 | | Silt particle fraction (0.005–0.075 mm) (%) | 69.4 | 72.6 | | Sand particle fraction (0.075–2 mm) (%) | 1.3 | 23.9 | | SiO2 (%) | 65.32 | 65.31 | | Al2O3 (%) | 18.72 | 18.74 | | Fe2O3 (%) | 5.17 | 5.15 | | K2O (%) | 2.15 | 2.13 | | Na2O (%) | 0.56 | 0.57 | | CaO (%) | 0.98 | 1.01 | | MgO (%) | 1.12 | 1.11 | | TiO2 (%) | 0.86 | 0.87 | | PbO (%) | — | 0.98 | | Loss on ignition (%) | 5.12 | 4.14 |
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