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AssigneeCiments Francais
InventorsEmmanuel Moudilou, Cyril Guerandel, Bruno Le Rolland, Stephanie Delair
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A process for treating polluted soils, in particular soils with a leachable fraction greater than 0.4%, wherein the leachable fraction contains predominantly anions, in particular sulfate ions, and/or heavy metals, includes mixing the soil with a sulfoaluminate-clinker-based hydraulic binder, in soil/binder weight proportions of between 1 and 40 parts of binder per 100 parts of soil, the sulfoaluminate clinker containing more than 50% by weight of ye'elimite C4A3S phase, less than 15% by weight of belite C2S phase, and from 1% to 5% by weight of free lime CaO. The process is used for stabilizing soils in situ or before dumping, soils polluted in particular with sulfate anions and/or heavy metal cations.
A process for the treatment of polluted soils, in particular of soils exhibiting a leachable fraction of greater than 0.4%, said leachable fraction predominantly including anions sulfate ions, and/or heavy metals,
A process for the stabilization of soils, which soils are polluted in particular by sulfate anions and/or heavy metal cations, said process comprising the steps of:
Dependencies are inferred from the claim text.