Engineering geology of residual soil derived from mudstone in Zimbabwe
文献类型：期刊论文
| 作者 | Zhang, Xianwei1,2; Liu, Xinyu1,3; Chen, Cheng1; Kong, Lingwei1; Wang, Gang1,3 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 277页码:11 |
| 关键词 | Mudstone residual soil Engineering geological characteristics Shear strength Microstructure Mineralogy Iron-bearing cementation |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2020.105785 |
| 英文摘要 | As increasing amounts of civil engineering work are carried out on mudstone-derived residual soils, it has become important to systematically assess their geological engineering properties. Thus, the properties of mudstone-derived residual soils were evaluated in this study via a series of comprehensive laboratory tests to assess physical, mechanical, mineralogical, and microstructural variations. Results show that the physical properties of these soils are inadequate in terms of engineering applications; these soils can be classified as highly plastic clays that are hard to compact. Natural mudstone-derived residual soils undergo severe disintegration underwater while remolded examples are similar but tend to exhibit more stable responses. Natural mudstone-derived residual soils behave in a structured way when subjected to shear and compression; these soil types possess superior natural shear resistance but their strength decreases significantly following saturation as well as in wetting and drying cycles. Data show that the microstructures of mudstone-derived residual soils are characterized by the presence of aggregations with fissures; although iron-bearing cementation between these aggregations is responsible for high soil strength, bonds can be damaged, or even destroyed, when samples are saturated or subjected to wetting and drying cycles leading to a reduction in shear strength. The results of this research provide clear parameters for related engineering applications and enhance our understanding of residual mudstone-derived soils. |
| 资助项目 | National Natural Science Foundation of China[41972285] ; National Natural Science Foundation of China[41672293] ; National Natural Science Foundation of China[51709290] ; Youth Innovation Promotion Association CAS[2018363] ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection[SKLGP2020K024] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000584622900013 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25211]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Xianwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 2.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm, Chengdu, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xianwei,Liu, Xinyu,Chen, Cheng,et al. Engineering geology of residual soil derived from mudstone in Zimbabwe[J]. ENGINEERING GEOLOGY,2020,277:11. |
| APA | Zhang, Xianwei,Liu, Xinyu,Chen, Cheng,Kong, Lingwei,&Wang, Gang.(2020).Engineering geology of residual soil derived from mudstone in Zimbabwe.ENGINEERING GEOLOGY,277,11. |
| MLA | Zhang, Xianwei,et al."Engineering geology of residual soil derived from mudstone in Zimbabwe".ENGINEERING GEOLOGY 277(2020):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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