| Damage evolution and recrystallization enhancement of frozen loess | |
| Zhou, Zhiwei; Ma, Wei; Zhang, Shujuan; Cai, Cong; Mu, Yanhu; Li, Guoyu | |
| 刊名 | INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
 |
| 2018-08-01 | |
| 卷号 | 27期号:8页码:1131-1155 |
| 关键词 | Frozen soils mechanical property damage evolution recrystallization enhancement multiaxial loading |
| ISSN号 | 1056-7895 |
| DOI | 10.1177/1056789517731138 |
| 通讯作者 | Ma, Wei(mawei@lzb.ac.cn) |
| 英文摘要 | A series of multistage triaxial compression, creep, and stress relaxation tests were conducted on frozen loess at the temperature of -6 degrees C in order to study the damage evolution and recrystallization enhancement of mechanical properties during deformation process. The effect of strain rate, confining pressure, and hydrostatic stress history in the degradation laws of mechanical properties is investigated further. The strain rate has a significant influence on the stress-strain curve which dominates the evolution trend of mechanical properties. The mechanical behaviors (strength, stiffness, and viscosity) of frozen loess all exhibit evident response for the consolidation and pressure melting phenomenon caused by the confining pressure. The multistage loading tests under different hydrostatic stresses are capable of differentiating the development characteristics of mechanical properties during axial loading and hydrostatic compression process, respectively. The testing results indicated that the recrystallization of the ice particle in the frozen soils is an important microscopic factor for enhancement behaviors of mechanical parameters during the deformation process. This strengthening degree of mechanical properties is determined by temperature, duration time, deformation degree, and stress state during the recrystallization process. The phase transformation led by pressure melting and ice recrystallization is a nonnegligible changing pattern of frozen soils microstructure, which has apparent role in the damage evolution of mechanical properties. |
| 收录类别 | SCI |
| WOS关键词 | FREEZE-THAW CYCLES ; CONSTITUTIVE MODEL ; SILTY SAND ; MECHANICAL-BEHAVIOR ; PERMAFROST REGIONS ; TEMPERATURE ; ICE ; SOILS ; CLAY |
| WOS研究方向 | Materials Science ; Mechanics |
| WOS类目 | Materials Science, Multidisciplinary ; Mechanics |
| 语种 | 英语 |
| 出版者 | SAGE PUBLICATIONS LTD |
| WOS记录号 | WOS:000440052200001 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557780 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ma, Wei |
| 作者单位 | Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Zhiwei,Ma, Wei,Zhang, Shujuan,et al. Damage evolution and recrystallization enhancement of frozen loess[J]. INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,2018,27(8):1131-1155. |
| APA | Zhou, Zhiwei,Ma, Wei,Zhang, Shujuan,Cai, Cong,Mu, Yanhu,&Li, Guoyu.(2018).Damage evolution and recrystallization enhancement of frozen loess.INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,27(8),1131-1155. |
| MLA | Zhou, Zhiwei,et al."Damage evolution and recrystallization enhancement of frozen loess".INTERNATIONAL JOURNAL OF DAMAGE MECHANICS 27.8(2018):1131-1155. |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论