Mechanical behaviors of coral sand and relationship between particle breakage and plastic work
文献类型：期刊论文
| 作者 | Gao, Ran; Ye, Jianhong |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 316 |
| 关键词 | Coral calcareous sand Triaxial test with conventional and high confining pressure Critical state Particle breakage Plastic work Breakage index |
| ISSN号 | 0013-7952 |
| 英文摘要 | As a special geotechnical material, coral calcareous sand (CCS), also widely known as coral sand or calcareous sand, surely has similarities and differences in mechanical behaviors with terrigenous sand. As the foundation material of some important structures such as ports, aircraft runways, and marine lighthouses in the South China Sea (SCS), it is necessary and has engineering significance to study its basic mechanical properties. Taking the CCS sampled from a reclaimed land on the top of a natural coral reef in the SCS as the typical case, a series of drained and undrained triaxial shear tests were performed under conventional and high confining pressure in this study. It is found that CCS has all the characteristics that all granular materials should have. However, since the irregular particle morphology and high roughness particle surface, CCS presents a great initial shear stiffness which is significantly different from that of quartz sand. Only some CCS specimens can strictly reach the critical state, and the feature lines in the p'-q space, i.e., critical state line, and phase transformation line are not affected by the factors such as the consolidation confining pressure, initial dry density, and drainage condition. However, the critical state line in the e-lnp' space is not unique, but dependent on the initial dry density. Based on the particle breakage measurement, a new description for the relationship between particle crushing and plastic work is proposed. It could provide an experimental basis for the development of a constitutive model considering the particle breakage for CCS. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000990990000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34907]  |
| 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.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Gao, Ran,Ye, Jianhong. Mechanical behaviors of coral sand and relationship between particle breakage and plastic work[J]. ENGINEERING GEOLOGY,2023,316. |
| APA | Gao, Ran,&Ye, Jianhong.(2023).Mechanical behaviors of coral sand and relationship between particle breakage and plastic work.ENGINEERING GEOLOGY,316. |
| MLA | Gao, Ran,et al."Mechanical behaviors of coral sand and relationship between particle breakage and plastic work".ENGINEERING GEOLOGY 316(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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