中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Experimental Study on the Impact of Water Content on the Strength Parameters of Coral Gravelly Sand

文献类型:期刊论文

作者Wu, Yang2; Wang, Xing2; Shen, Jian-Hua1; Cui, Jie2; Zhu, Chang-Qi1; Wang, Xin-Zhi1
刊名JOURNAL OF MARINE SCIENCE AND ENGINEERING
出版日期2020-09-01
卷号8期号:9页码:25
关键词coral gravelly sand water content strength parameters microstructure particle breakage plastic work
DOI10.3390/jmse8090634
英文摘要The effect of capillary water caused by heavy rainfall and groundwater level fluctuations can induce the erosion and collapse of island reef coral sand foundations. Here, the effects of water content (omega) on the shear strength parameters of coral gravelly sand are analyzed at the macro and micro scales by laboratory consolidated-drained triaxial compression and nuclear magnetic resonance tests. Furthermore, particle breakage characteristics of coral gravelly sand under the static load are discussed. With increasing omega, (1) the internal friction angle increases slightly (<1 degrees) then decreases; (2) the apparent cohesion is more sensitive to the change in the omega; (3) with an increase from 5.4% to 21.3%, the bound water content remains almost unchanged; (4) the capillary water content is the main factor impacting the apparent cohesion; (5) the increase in free water content is the internal cause of the decreasing internal friction angle of coral gravelly sand with omega> 11.1%; and (6) the particle breakage increases, and there is an approximately linear relationship between the median particle diameter (d(50)) and relative breakage index (Br). The established physical model can reflect the influence of water content and plastic work and describe the evolution law of particle breakage.
资助项目Consultative Project by Chinese Academy of Engineering[2019-XZ-18] ; National Natural Science Foundation of China[41877271] ; National Natural Science Foundation of China[51908153] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13010301] ; Guangzhou City Technology and Science Program[201904010278]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:000579980600001
出版者MDPI
源URL[http://119.78.100.198/handle/2S6PX9GI/24942]  
专题中科院武汉岩土力学所
通讯作者Wang, Xing
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geotech Mech & Engn, Wuhan 430071, Peoples R China
2.Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China
推荐引用方式
GB/T 7714
Wu, Yang,Wang, Xing,Shen, Jian-Hua,et al. Experimental Study on the Impact of Water Content on the Strength Parameters of Coral Gravelly Sand[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2020,8(9):25.
APA Wu, Yang,Wang, Xing,Shen, Jian-Hua,Cui, Jie,Zhu, Chang-Qi,&Wang, Xin-Zhi.(2020).Experimental Study on the Impact of Water Content on the Strength Parameters of Coral Gravelly Sand.JOURNAL OF MARINE SCIENCE AND ENGINEERING,8(9),25.
MLA Wu, Yang,et al."Experimental Study on the Impact of Water Content on the Strength Parameters of Coral Gravelly Sand".JOURNAL OF MARINE SCIENCE AND ENGINEERING 8.9(2020):25.

入库方式: OAI收割

来源:武汉岩土力学研究所

浏览0
下载0
收藏0
其他版本

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。