Occurrence characteristics of free iron oxides in soil microstructure: evidence from XRD, SEM and EDS
文献类型：期刊论文
| 作者 | Cui, X. L.1; Yin, S.2; Zhang, X. W.2,3; Kong, L. W.2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2016 |
| 卷号 | 75期号:4页码:1493-1503 |
| 关键词 | Free iron oxide Occurrence Soil property Microstructure Cementation Formation and failure of soils |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-015-0781-2 |
| 英文摘要 | Free iron oxides in soils usually have distinct electrochemical properties, relatively high surface energy, a strong ability to adsorb, and provide structural cementation in the soil. Thus, soil properties are influenced by the content, characteristics and occurrence of free iron oxides. This paper reports a study on Zhanjiang clay and Longmen laterite, both of which are rich in free iron oxides, to investigate the occurrence characteristics of free iron oxides in soils. Dithionite-citrate-bicarbonate solution was adopted to remove free iron oxides from the soils, and qualitative filter paper was used to extract particles with size d < 25 mu m. X-ray diffraction, scanning electron microscopy, and energy dispersive spectrometry were used to analyze alterations in the physical and chemical properties, mineral composition, and microstructure caused by the removal of free iron oxides. The results obtained in this study show that free iron oxides act as a bridge in Zhanjiang clay and mostly in the form of cladding in Longmen laterite. Both forms enhance the cementation and structural strength of the soils and weaken the swelling-shrinkage capacity. The findings of this paper will contribute to a deeper understanding of the formation and failure of soils. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000386525900010 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3946]  |
| 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.Hubei Univ Technol, Sch Civil Engn & Architecture 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Tongji Univ, Key Lab Geotech & Underground Engn ; |
| 推荐引用方式 GB/T 7714 | Cui, X. L.,Yin, S.,Zhang, X. W.,et al. Occurrence characteristics of free iron oxides in soil microstructure: evidence from XRD, SEM and EDS[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2016,75(4):1493-1503. |
| APA | Cui, X. L.,Yin, S.,Zhang, X. W.,&Kong, L. W..(2016).Occurrence characteristics of free iron oxides in soil microstructure: evidence from XRD, SEM and EDS.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,75(4),1493-1503. |
| MLA | Cui, X. L.,et al."Occurrence characteristics of free iron oxides in soil microstructure: evidence from XRD, SEM and EDS".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 75.4(2016):1493-1503. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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