Particle breakage characteristics of a foundation filling material on island-reefs in the South China Sea

doi:10.1016/j.conbuildmat.2021.124690

	Particle breakage characteristics of a foundation filling material on island-reefs in the South China Sea
	Wang, Xing 1; Liu, Jin-Quan 2; Cui, Jie 1; Wang, Xin-Zhi 3; Shen, Jian-Hua 3; Zhu, Chang-Qi 3
刊名	CONSTRUCTION AND BUILDING MATERIALS
	2021-11-01
卷号	306 页码:17
关键词	Calcareous gravelly sand Particle breakage Plastic work Relative density Effective confining pressure
ISSN号	0950-0618
DOI	10.1016/j.conbuildmat.2021.124690
英文摘要	Calcareous sand is the only building material in the reclaimed foundation of island-reefs in the South China Sea, and calcareous sand in reclaimed foundation is predominantly calcareous gravelly sand (CGS). Particle breakage is the primary factor affecting the stability of reclaimed foundation. Considering the susceptibility to breakage of calcareous sand, multiple triaxial shear tests are conducted to investigate the particle breakage and evolution of CGS under different relative densities and effective confining pressures. Test results show that relative breakage rate more satisfactorily reflects the overall particle breakage degree of sample rather than grading parameters and fractal dimension. Thus, the relationship of relative breakage rate with relative density and effective confining pressure is established. A trend of "contraction first and dilatancy afterwards" is observed for CGS, which makes plastic work done by mean effective stress exist the negative value. Besides, a plastic work calculation model is developed to reflect the effects of relative density and effective confining pressure. Moreover, the relationship between plastic work and relative breakage rate can be fit using an inverse proportional function and is not significantly affected by relative density or effective confining pressure. These findings in this study lay a theoretical foundation for assessing the stability of reclaimed foundation of island-reefs.
资助项目	National Natural Science Founda-tion of China[51809253] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060301] ; China Postdoctoral Science Foundation[2020 M682653] ; China Postdoctoral Science Foundation[2021 T140142] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515110663]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000697027800001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27931]
专题	中科院武汉岩土力学所
通讯作者	Liu, Jin-Quan
作者单位	1.Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China 2.Univ Macau, Fac Sci & Technol, Macau 999078, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geotech Mech & Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xing,Liu, Jin-Quan,Cui, Jie,et al. Particle breakage characteristics of a foundation filling material on island-reefs in the South China Sea[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,306:17.
APA	Wang, Xing,Liu, Jin-Quan,Cui, Jie,Wang, Xin-Zhi,Shen, Jian-Hua,&Zhu, Chang-Qi.(2021).Particle breakage characteristics of a foundation filling material on island-reefs in the South China Sea.CONSTRUCTION AND BUILDING MATERIALS,306,17.
MLA	Wang, Xing,et al."Particle breakage characteristics of a foundation filling material on island-reefs in the South China Sea".CONSTRUCTION AND BUILDING MATERIALS 306(2021):17.