Experimental study on the influence of clay content on the shear strength of silty soil and mechanism analysis
文献类型：期刊论文
| 作者 | Xu, Haibiao2; Li, Xinming1,3; Liu, Pengpeng1; Yin, Song1; Ren, Kebin4; Sun, Yuzhou1; Geng, Jinming1 |
| 刊名 | OPEN GEOSCIENCES
 |
| 出版日期 | 2024-05-31 |
| 卷号 | 16期号:1页码:12 |
| 关键词 | silty soil clay content stress condition shear strength earthen archaeological site |
| ISSN号 | 2391-5447 |
| DOI | 10.1515/geo-2022-0647 |
| 英文摘要 | Shear strengths of silty soil were determined for shallow destruction of the soil sites frequently occurring in the Central Plains area. Specimens were prepared with five different clay contents (5, 10, 15, 20, and 25%) prior to compaction at dry densities of 1.60, 1.70, and 1.80 g/cm3. Soil specimens were saturated and then the consolidated undrained shear test was conducted with eight confined pressures ranging from 1 to 400 kPa. Results indicate that the shear strength increases significantly as the clay content increases from 5 to 25%, and the cohesion c shows bilinear function with the inflection point at the clay content of 10%. The difference of cohesion in the high and low stress sections decreases gradually to almost the same value until 25% of the clay content, while the internal friction angle phi decreases with the increase in clay content. Within the range of dry density and clay content tested, the shear strength of silty soil in the low stress range obtained is higher than the measured value. Therefore, for the shallow damage of soil site, the shear strength parameters should consider the low stress test conditions. The bilinear growth of cohesion c with clay content can be attributed to the changes from "sand-like soil" to "clay-like soil" with the skeleton of soil specimen transitioning from sand particles to "clay grid" when the clay content exceeds approximately 10% combined with the results of scanning electron microscopy. |
| 资助项目 | Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME022027] ; Basic Research Project of Henan Provincial Key Scientific Research Project[20ZX009] ; Postgraduate Education Reform and Quality Improvement Project of Henan Province[YJS2022SZ16] ; Scientific and Technological Project of Henan Province[222102320060] ; National Natural Science Foundation of China[51509274] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001235852100001 |
| 出版者 | DE GRUYTER POLAND SP Z O O |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41508]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Xinming |
| 作者单位 | 1.Zhongyuan Univ Technol, Sch Civil Engn & Architecture, 41 Zhongyuan Rd, Zhengzhou 450007, Peoples R China 2.Zhongben Testing & Certificat Co Ltd, Zhengzhou 450046, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 4.Henan Prov Architectural Heritage Protect & Res In, 86 Wenhua Rd, Zhengzhou 450001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Haibiao,Li, Xinming,Liu, Pengpeng,et al. Experimental study on the influence of clay content on the shear strength of silty soil and mechanism analysis[J]. OPEN GEOSCIENCES,2024,16(1):12. |
| APA | Xu, Haibiao.,Li, Xinming.,Liu, Pengpeng.,Yin, Song.,Ren, Kebin.,...&Geng, Jinming.(2024).Experimental study on the influence of clay content on the shear strength of silty soil and mechanism analysis.OPEN GEOSCIENCES,16(1),12. |
| MLA | Xu, Haibiao,et al."Experimental study on the influence of clay content on the shear strength of silty soil and mechanism analysis".OPEN GEOSCIENCES 16.1(2024):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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