Effect of biochar on permeability of compacted soil and its microscopic mechanism
文献类型：期刊论文
| 作者 | Wan, Yong; Dong, Zhiwei; He, Xingxing; Liu, Ruiqi; Cai, Yangyang; Liu, Lei; Qin, Linbo; Xue, Qiang
|
| 刊名 | CANADIAN GEOTECHNICAL JOURNAL
 |
| 出版日期 | 2022-06-09 |
| 关键词 | biochar-amended soil physical properties permeability coefficient microporous structure influence mechanism |
| ISSN号 | 0008-3674 |
| 英文摘要 | Biochar has attracted much attention in the field of geo-environmental engineering as a carbon-neutral alternative for soil amendment. In this study, the effects of biochar dosage, type, and particle size on the permeability and physical properties of compacted silty clay were investigated. And the prediction model of permeability coefficient of biochar-amended soil (BAS) was established. Based on the microscopy test results, the influence mechanism of biochar on the permeability of compacted soil was analyzed. Results revealed that adding different biochar types affected the consistency limits, specific gravity, and compaction curves of soil obviously. As the biochar content increased, the permeability coefficient of compacted BAS initially decreased before increasing. The permeability coefficient of compacted BAS with peanut-shell biochar was much higher than with other biochar types. Additionally, reducing the particle size of biochar can effectively decrease the permeability coefficient of BAS due to the pore-filling effect. Microscopy test results show that the permeability coefficient of BAS is affected by both the most probable pore size and the main-peak area of the pore-size distribution curve. Results suggest that controlling the biochar content at 5% and reducing the particle size of biochar are more beneficial to improve the impermeability of compacted BAS. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000889822900001 |
| 出版者 | CANADIAN SCIENCE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35206]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Wuhan University of Science & Technology 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; 3.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; |
| 推荐引用方式 GB/T 7714 | Wan, Yong,Dong, Zhiwei,He, Xingxing,et al. Effect of biochar on permeability of compacted soil and its microscopic mechanism[J]. CANADIAN GEOTECHNICAL JOURNAL,2022. |
| APA | Wan, Yong.,Dong, Zhiwei.,He, Xingxing.,Liu, Ruiqi.,Cai, Yangyang.,...&Xue, Qiang.(2022).Effect of biochar on permeability of compacted soil and its microscopic mechanism.CANADIAN GEOTECHNICAL JOURNAL. |
| MLA | Wan, Yong,et al."Effect of biochar on permeability of compacted soil and its microscopic mechanism".CANADIAN GEOTECHNICAL JOURNAL (2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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