Soil slaking under the effect of dispersants: characteristics and mechanism
文献类型：期刊论文
| 作者 | Wang, Shuying1,2,6; Zhu, Hanbiao6; Liu, Pengfei3,4; Qu, Tongming5 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 83期号:13页码:11 |
| 关键词 | Clay Slaking characteristics Organic dispersant Inorganic dispersant Atterberg limits Influence mechanism |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-024-11708-w |
| 英文摘要 | The adhesion of clay to the cutterhead and cutters presents a significant challenge during earth pressure balance (EPB) shield excavation in clay strata. Dispersants are widely used to remove clay that adheres to metal surfaces, but their conditioning characteristics and working mechanisms have not yet been thoroughly investigated. This study investigated the effects of organic and inorganic dispersants on clay plasticity and slaking characteristics through Atterberg limit and slaking tests, complemented by Zeta potential and swelling tests to explore the underlying mechanisms. The results demonstrate that increasing the content of inorganic and organic dispersants reduces soil plasticity and enhances the slaking rate during the rapid development period in pure water. Dispersion slaking occurs in pure water for soil blocks treated with inorganic dispersant, while soil blocks treated with organic dispersant undergo primarily surface slaking. A higher organic dispersant concentration significantly intensified the slaking rate. In contrast, inorganic dispersant solutions inhibit soil slaking. Inorganic dispersant solutions impede soil expansion and slaking due to reduced electrostatic repulsion and increasing difficulty in water infiltration. Conversely, organic dispersant solutions accelerate soil slaking by promoting soil expansion and solution infiltration, reducing surface tension, and increasing pore air pressure. |
| 资助项目 | National Natural Science Foundation of China |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001248769600002 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41783]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhu, Hanbiao |
| 作者单位 | 1.Cent South Univ, MOE Key Lab Engn Struct Heavy Haul Railway, Changsha 410075, Peoples R China 2.Cent South Univ, Tunnel & Underground Engn Res Ctr, Changsha 410075, Peoples R China 3.CCCC Second Harbor Engn Co Ltd, Wuhan 430012, Hubei, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430061, Hubei, Peoples R China 5.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Clearwater Bay, Hong Kong, Peoples R China 6.Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shuying,Zhu, Hanbiao,Liu, Pengfei,et al. Soil slaking under the effect of dispersants: characteristics and mechanism[J]. ENVIRONMENTAL EARTH SCIENCES,2024,83(13):11. |
| APA | Wang, Shuying,Zhu, Hanbiao,Liu, Pengfei,&Qu, Tongming.(2024).Soil slaking under the effect of dispersants: characteristics and mechanism.ENVIRONMENTAL EARTH SCIENCES,83(13),11. |
| MLA | Wang, Shuying,et al."Soil slaking under the effect of dispersants: characteristics and mechanism".ENVIRONMENTAL EARTH SCIENCES 83.13(2024):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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