Thixotropic mechanism of clay: A microstructural investigation
文献类型：期刊论文
| 作者 | Yang, A. W.2; Zhang, X. W.1,2,4; Kong, L. W.1,4; Sayem, H. M.1,3,4 |
| 刊名 | SOILS AND FOUNDATIONS
 |
| 出版日期 | 2017 |
| 卷号 | 57期号:1页码:23-35 |
| 关键词 | Thixotropy Mechanism Microstructure Strength Time |
| ISSN号 | 0038-0806 |
| DOI | 10.1016/j.sandf.2017.01.002 |
| 英文摘要 | Clays with high sensitivity exhibit varied degrees of thixotropic characteristics. Previous research has been focused on dilute suspensions, but only a few studies have investigated normal clay with water contents lower than the liquid limit. Given the limited studies performed, the thixotropic behavior of clays and the underlying mechanism remain ambiguous, particularly in the microscopic scale. In this study, samples of Zhanjiang clay from southern China were used to elucidate the thixotropic process. The samples were agitated and then subjected to unconfined compressive strength and pocket penetrometer tests, scanning electron microscopy, and mercury intrusion porosimetry to evaluate their regain strength and microstructure. After 500 d of thixotropy, the strength of the Zhanjiang clay was 2.58 times higher than that after the disturbance and significantly higher than that of the other clays reported in the literature. These findings provide evidence that thixotropy is a process in which the dispersed structure is transformed into a flocculent structure through the homogenization of the pore size distribution caused by particle movement. This phenomenon may be due to the changes in the interaction of attractive and repulsive forces between particles. Given the experimental findings, a thixotropic mechanism for clay is proposed. This study will be beneficial for predicting the strength of disturbed soils. (C) 2017 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000397099800002 |
| 出版者 | JAPANESE GEOTECHNICAL SOC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4013]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Tianjin Chengjian Univ, Sch Civil Engn, Tianjin Key Lab Soft Soil Characterist & Engn Env ; 3.Jahangirnagar Univ, Dept Geol Sci, Dhaka, Bangladesh; 4.Chinese Acad Sci, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Yang, A. W.,Zhang, X. W.,Kong, L. W.,et al. Thixotropic mechanism of clay: A microstructural investigation[J]. SOILS AND FOUNDATIONS,2017,57(1):23-35. |
| APA | Yang, A. W.,Zhang, X. W.,Kong, L. W.,&Sayem, H. M..(2017).Thixotropic mechanism of clay: A microstructural investigation.SOILS AND FOUNDATIONS,57(1),23-35. |
| MLA | Yang, A. W.,et al."Thixotropic mechanism of clay: A microstructural investigation".SOILS AND FOUNDATIONS 57.1(2017):23-35. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。