Method for Preparing Hollow Cylindrical Specimens of Natural Granite Residual Soil
文献类型：期刊论文
| 作者 | Liu, Xinyu; Zhang, Xianwei; Kong, Lingwei; Li, Chengsheng; An, Ran |
| 刊名 | GEOTECHNICAL TESTING JOURNAL
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 45期号:6页码:1070 |
| ISSN号 | 0149-6115 |
| 关键词 | granite residual soil hollow cylinder torsional shear test specimen preparation strength anisotropy disturbance cementation |
| 英文摘要 | As an effective method of studying soil anisotropy, hollow cylinder torsional shear (HCTS) tests have been performed extensively on sedimentary soil, thereby establishing the anisotropic behavior of sand and clay. However, little is known about the anisotropic behavior of granite residual soil (GRS) formed by weathering, partly because hollow cylindrical specimens of natu-ral GRS have yet to be prepared successfully, hence the lack of HCTS tests performed on GRS. The unique geotechnical properties of GRS, including high intact strength, susceptibility to disturbance, and the minor fissures in soil, pose great challenges when trying to prepare natural specimens. This paper proposes a new method to address this issue, which involves preparing a solid cylindrical specimen, drilling an initial inner cavity and then enlarging it, and finely trim-ming the specimen to its ultimate dimensions. Two methods are proposed for enlarging the inner cavity, both of which work well. The reliability of the proposed method is confirmed through specimen quality as indicated by the limited void ratio change due to reconsolidation, test repeatability, and comparison of the results of HCTS tests with those of triaxial tests. The HCTS tests reveal the shear strength anisotropy of natural GRS. Although specified for residual soil derived from granite, the proposed method could also be used for other weathered materials. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | AMER SOC TESTING MATERIALS |
| WOS记录号 | WOS:000874041900001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35340]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Shantou University; 3.Wuhan University of Science & Technology 4.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; |
| 推荐引用方式 GB/T 7714 | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,et al. Method for Preparing Hollow Cylindrical Specimens of Natural Granite Residual Soil[J]. GEOTECHNICAL TESTING JOURNAL,2022,45(6):1070. |
| APA | Liu, Xinyu,Zhang, Xianwei,Kong, Lingwei,Li, Chengsheng,&An, Ran.(2022).Method for Preparing Hollow Cylindrical Specimens of Natural Granite Residual Soil.GEOTECHNICAL TESTING JOURNAL,45(6),1070. |
| MLA | Liu, Xinyu,et al."Method for Preparing Hollow Cylindrical Specimens of Natural Granite Residual Soil".GEOTECHNICAL TESTING JOURNAL 45.6(2022):1070. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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