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Process for treating polluted soils by means of a sulfoaluminate clinker based hydraulic binder and use thereof for stabilizing polluted soils
Process for treating polluted soils by means of a sulfoaluminate clinker based hydraulic binder and use thereof for stabilizing polluted soils
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机译:通过基于硫铝酸盐熟料的水硬性粘结剂处理污染土壤的方法及其在稳定污染土壤中的用途
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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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机译:一种用于处理污染土壤的方法,特别是可浸出部分大于0.4%的土壤,其中可浸出部分主要包含阴离子,尤其是硫酸根离子和/或重金属,包括将土壤与基于硫铝酸盐熟料的水硬性混合物混合每100份土壤中的土壤/粘合剂重量比为1到40份粘合剂,硫铝酸盐熟料包含的叶绿素C 4 Sub> A 3重量百分比大于50% Sub> S相,小于15%重量的Belite C2S相和1%至5%重量的游离石灰CaO。该方法用于原位或倾倒前稳定土壤,尤其是被硫酸根阴离子和/或重金属阳离子污染的土壤。
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