摘要
利用纯净的粘土和重金属离子溶液,配制了不同含量的重金属污染土进行击实实验,获得了相对应的最优含水率,按照最优含水率重新配置土样,并通过直接剪切等其他工性试验,探讨了重金属的存在对土体工性的影响,在工性试验的同时,对不同的污染土进行SEM扫描,研究了其微观结构的变化规律,试验结果表明:土中重金属浓度的增加导致土中粘粒的含量逐渐减小,颗粒团聚,出现大孔隙,同时其工性变差,强度降低。
Using pure standard clay and heavy metal ion solution prepare different content of heavy metal contaminated soil. We obtain the optimum moisture content of the corresponding soil samples after doing the compaction test. We configure soil samples in accordance with the optimal water content,and carry out direct shear tests and other tests to study the influence of heavy metals on soil properties. At the same time,the different polluted soil were scanned by SEM. The main research contents are given as follows： the concentrations of heavy metals in the soil resulted in an increase in clay content decreases,agglomerated particles,big pore,also its industry and trade of variation and the strength decreased.
出处
《山西建筑》
2016年第22期91-92,共2页
Shanxi Architecture
关键词
重金属污染土
工程性质
微观结构
heavy metal contaminated soil
engineering properties
microstructure
