Research Article
Effect of Ca/Al Ratio on Stabilization/Solidification of Lead-Contaminated Soil by Ettringite
Table 2
Composition of binder (unit: %).
| | Sample number | Al : Ca : S mole ratio | High-alumina cement | Lime | Gypsum |
| | Ca/Al = 4 : 3 | 3 : 4 : 2 | 7.5 | 0 | 7.5 | | Ca/Al = 6 : 3 | 3 : 6 : 2 | 6.36 | 2.28 | 6.36 | | Ca/Al = 8 : 3 | 3 : 8 : 2 | 5.6 | 3.8 | 5.6 | | Ca/Al = 10 : 3 | 3 : 10 : 2 | 5 | 5 | 5 |
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