Effects of carbonation on permeability characteristics of cement-stabilized/ solidified lead-contaminated soil

被引：0
|
作者：
Li K. [1 ]
Zhang D.-W. [1 ]
Cao Z.-G. [1 ]
机构：
[1] School of Transportation, Southeast University, Nanjing
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2019年 / 41卷
关键词：
Carbonation; Lead-contaminated soil; Permeability characteristic; Pore structure; Stabilization/solidification;
D O I：
10.11779/CJGE2019S2030
中图分类号：
学科分类号：
摘要：
The method for artificially prepared lead-contaminated soil is used to prepare soil samples with different cement contents and lead concentrations. The effects of carbonation on the permeability of cement-solidified/stabilized lead-contaminated soil are studied. The relationship between the pore structures under the microscopic and the coefficient of permeability are compared. The results show that when the cement content is 7.5%, the carbonization increases the coefficient of permeability. When the cement content is 15%, the coefficient of permeability decreases under carbonization. The higher the lead concentration, the higher the coefficient of permeability of the sample, and the carbonization increases the permeability coefficient of the sample. The increase in the cement content significantly reduces the porosity of the sample. The porosity and coefficient of permeability of the sample increase under carbonization. The increase of the cement content significantly reduces the porosity of the sample. The carbonization increases the pore size of the sample with a pore diameter of less than 0.1 μm, and decreases the pore size of more than 0.1 μm. © 2019, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：117 / 120
页数：3
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