Effect of soaking time of dithionite-citrate-bicarbonate solution on strength and deformation characteristics of lateritic soil
文献类型：期刊论文
| 作者 | Bai, Wei1; Zhang, Wenbo2,3; Kong, Lingwei1; Fan, Henghui2; Guo, Aiguo1; Xu, Guofang1 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 15期号:11页码:3039-3049 |
| 关键词 | Lateritic soil Menard pressuremeter test (PMT) Free-iron-oxides Dithionite-citrate-bicarbonate (DCB) Effective cementation of iron |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2023.02.003 |
| 英文摘要 | This study aimed to reveal the influence of different free-iron-oxides contents on the strength and deformation characteristics of in situ lateritic soil. A test method that combined the selective chemical dissolution method and in situ Menard pressuremeter test (PMT) was proposed. The soaking time in dithionite-citrate-bicarbonate (DCB) solution was used as a variable to control the free-iron-oxides content in lateritic soil. Then, the in situ lateritic soil boreholes with different soaking time were tested by PMT. The results showed that the in situ horizontal pressure p(0), critical edge pressure p(f), ultimate pressure prediction p(l), pressuremeter modulus E-m, shear modulus G(m), and foundation-bearing capacity f(0k) of lateritic soil decreased rapidly after immersing in DCB solution within 1-4 d. With increasing soaking time, the decrease rate reduced gradually. Moreover, the relationship curve between free-iron-oxides content and soaking time declined rapidly and then stabilized, and the free-iron-oxides content at the inflection point was 30.11 g/kg. When the free-iron-oxides content changed to the inflection point, the free-iron-oxides that played a cementing role was largely removed, indicating that the effective cementing iron-content of Miaoling lateritic soil was about 52.9%. This study demonstrated that the proposed test method can determine the influence of free-iron-oxides content on the strength and deformation characteristics of lateritic soil. (C) 2023 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| 资助项目 | National Natural Science Foundation of China[41772339] ; National Natural Science Foundation of China[41877281] ; National Natural Science Foundation of China[52178372] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001095804400017 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39884]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Bai, Wei; Zhang, Wenbo |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Northwest Agr & Forestry Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 3.Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Wei,Zhang, Wenbo,Kong, Lingwei,et al. Effect of soaking time of dithionite-citrate-bicarbonate solution on strength and deformation characteristics of lateritic soil[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2023,15(11):3039-3049. |
| APA | Bai, Wei,Zhang, Wenbo,Kong, Lingwei,Fan, Henghui,Guo, Aiguo,&Xu, Guofang.(2023).Effect of soaking time of dithionite-citrate-bicarbonate solution on strength and deformation characteristics of lateritic soil.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,15(11),3039-3049. |
| MLA | Bai, Wei,et al."Effect of soaking time of dithionite-citrate-bicarbonate solution on strength and deformation characteristics of lateritic soil".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 15.11(2023):3039-3049. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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