Effect of Vertical Strain and Hydration Time on Mechanical Behavior and Microstructure of Expansive Soil
文献类型：期刊论文
| 作者 | Chi, Ze-Cheng1,5; Dai, Zhang-Jun5; Huang, Kang3,4,5; Wang, Wei2; Chen, Shan-Xiong5 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 25期号:5页码:14 |
| 关键词 | Expansive soil Swelling pressure Hydration mechanism Microstructure Vertical strain |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-9585 |
| 英文摘要 | In this study, the effects of vertical strain and hydration time on the mechanical behavior and microstructure of expansive soils are examined, addressing the challenges they pose to engineering structures due to moisture-induced swelling pressure and deformation. Conducting hygroscopic expansion tests on soils with varying initial dry densities, the study explores the relationship between swelling pressure and vertical strain. Additionally, the effect of different hydration times on these properties is assessed. Using mercury intrusion porosimetry, the soil specimens are dissected into top and bottom layers to observe microstructural changes over varying hydration periods. The results indicate a decline in swelling pressure and expansion rate with increased strain; at 1% strain, there is a 54% decrease in vertical swelling pressure and a 41% reduction in lateral pressure. Expansion rate attenuation is more significant, with an 83% decrease in vertical and 92% in lateral rates. The research concludes that the hydration process under limited strain consists of two stages: the initial strain stage, with pronounced top layer expansion, and a subsequent constant-volume stage, where the top layer undergoes compression and the bottom layer expands significantly. |
| 资助项目 | National Natural Science Foundation of China[42172308] ; National Natural Science Foundation of China[52108366] ; Hubei Provincial Natural Science Foundation of China[2023AFB369] ; Youth Innovation Promotion Association CAS[2022331] ; Key Research and Development Program of Hubei Province[2022BAA036] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001445471300025 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36412]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Dai, Zhang-Jun |
| 作者单位 | 1.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China 2.Guangdong Res Inst Water Resources & Hydropower, Guangzhou 510610, Peoples R China 3.Minist Water Resources, Changjiang River Sci Res Inst, Key Lab Geotech Mech & Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chi, Ze-Cheng,Dai, Zhang-Jun,Huang, Kang,et al. Effect of Vertical Strain and Hydration Time on Mechanical Behavior and Microstructure of Expansive Soil[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2025,25(5):14. |
| APA | Chi, Ze-Cheng,Dai, Zhang-Jun,Huang, Kang,Wang, Wei,&Chen, Shan-Xiong.(2025).Effect of Vertical Strain and Hydration Time on Mechanical Behavior and Microstructure of Expansive Soil.INTERNATIONAL JOURNAL OF GEOMECHANICS,25(5),14. |
| MLA | Chi, Ze-Cheng,et al."Effect of Vertical Strain and Hydration Time on Mechanical Behavior and Microstructure of Expansive Soil".INTERNATIONAL JOURNAL OF GEOMECHANICS 25.5(2025):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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