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PROCESS FOR TREATING POLLUTED SOIL WITH A SULFO-ALUMINUM CLINKER HYDRAULIC BINDER AND USE THEREOF FOR STABILIZING POLLUTED SOIL
PROCESS FOR TREATING POLLUTED SOIL WITH A SULFO-ALUMINUM CLINKER HYDRAULIC BINDER AND USE THEREOF FOR STABILIZING POLLUTED SOIL
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机译:用硫铝铝熟料液压粘结剂处理污染土壤的方法及其用于稳定污染土壤的方法
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摘要
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.
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