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中文摘要：
在已有研究成果和课题组工作的基础上,确立了化学改性土的分类原则,并将其分为5类：即无机类改性土、有机类改性土、无机有机复合类改性土、化学物理类改性土和污染土;给出了各类土的定义,并对它们的成因、工程性质、机理、用途以及优缺点进行了比较详细的分析。研究表明：5类化学改性土具有各自的工程性质特点和形成机理,并适用于不同的工程用途;其改性效果取决于改性材料的性质、被改性土的性质以及改性工艺等,其中化学—物理类改性土的工程性质最具有优势,而污染土一般不能满足工程的环境和强度要求,需要采取一定的措施后,才能作为工程材料使用。化学改性土在环境岩土工程领域中具有广阔的应用前景。
英文摘要：
Based on the existing research achievements and the authors＇ recent work, the chemical modified soils are classified into five categories i.e. inorganic soils, organic soils, inorganic-organic compound soils, chemico-physical soils and polluted soils. The definitions of the five categories of chemical modified soils are presented, and their origins, engineering properties, mechanisms, applications, advantages and disadvantages are also analyzed and summarized in this paper. The research indicates that the five chemical modified soils have different engineering properties, formation mechanisms and engineering applications; The effect of modified soils depends on the modified material properties, soil properties and modifying technology. The chemieo- physical soils are the best one in improving the engineering property, while the polluted soils can only be used after an effective treatment because in general their engineering properties and environmental effect can not meet the engineering requirement. The chemically modified soils have wide application prospect in the field of environmental geoteehnical engineering.
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