Mechanical behavior and microstructural variation of loess under dynamic compaction
文献类型：期刊论文
| 作者 | Hu, RL; Yeung, MR; Lee, CF; Wang, SJ |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2001-04-01 |
| 卷号 | 59期号:3-4页码:203-217 |
| 关键词 | loess dynamic loading compaction shear strength microstructure |
| ISSN号 | 0013-7952 |
| 文献子类 | Article |
| 英文摘要 | The laboratory dynamic compaction test was used to study the effects of dynamic impact loads on the shear strength characteristics of loess. Loess specimens were compacted by different numbers of blows and their shear strengths measured. The experimental results revealed that the shear strength varies in stages with the number of blows. During the initial stage, the shear strength increases with the number of blows. It reaches a peak value acid then decreases with the number of blows. To reveal the relationship between this alternation in shear strength and microstructural variation, quantitative microstructural analyses were performed on some tested specimens at different stages of strength evolution. This microstructural study demonstrated that the variation of shear strength is directly related to the alteration of microstructure. It is concluded that the shear strength of loess is basically controlled by its microstructural stale. Growing particle size heterogeneity, varying particle orientations and increasing microstructural damage are the main causes of the alternation of shear strength. (C) 2001 Elsevier Science B.V. All rights reserved. |
| WOS关键词 | SOIL ; QUANTIFICATION |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000168625000001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76955]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Hu, RL |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Engn Geomech Lab, Engn Geol Sect, Beijing 100029, Peoples R China 2.Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, RL,Yeung, MR,Lee, CF,et al. Mechanical behavior and microstructural variation of loess under dynamic compaction[J]. ENGINEERING GEOLOGY,2001,59(3-4):203-217. |
| APA | Hu, RL,Yeung, MR,Lee, CF,&Wang, SJ.(2001).Mechanical behavior and microstructural variation of loess under dynamic compaction.ENGINEERING GEOLOGY,59(3-4),203-217. |
| MLA | Hu, RL,et al."Mechanical behavior and microstructural variation of loess under dynamic compaction".ENGINEERING GEOLOGY 59.3-4(2001):203-217. |
入库方式： OAI收割
来源：地质与地球物理研究所
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