Determining the water content and void ratio of cement-treated dredged soil from the hydration degree of cement

doi:10.1016/j.enggeo.2020.105892

	Determining the water content and void ratio of cement-treated dredged soil from the hydration degree of cement
	He, Xingxing 2,4; Chen, Yijun 2,3,5; Tan, Xun 2,4; Wang, Shiquan 1; Liu, Lei 2,3,5
刊名	ENGINEERING GEOLOGY
	2020-12-20
卷号	279 期号:-页码:11
关键词	Dredged soil Cement-treatment Water content Void ratio Evolution model Hydration property
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2020.105892
英文摘要	Many important geotechnical and engineering geology properties of cement-treated dredged soil (CDS) depend on its the water content and void ratio (WC&VR). Based on the hydration model of cement, this study proposes time-evolution models of WC&VR in CDS, and verifies their reliability by fitting to experimental data. The two fitting parameters tau and beta in the models depended only on the type of soil. Increasing the cement content (A(w)) and initial water content (w(0)) of the dredged soil accelerated the decrease rate of WC&VR with curing time, but barely affected the duration of each stage in the WC&VR evolution curves. Next, the specific evolution laws and mechanisms of WC&VR in the curing process were fully discussed. The changes in WC&VR were consistent, and both trends exhibited typical four-stage characteristics: an initial steady stage, an accelerated descent stage, a decelerated descent stage, and a final steady stage. In microstructural analyses by X-ray diffraction, scanning electron microscopy, and thermo-gravimetric analysis, the evolution of WC&VR was found to be mainly related to the formation of cement hydration products, and the evolution characteristics well accorded with the hydration properties of cement.
资助项目	National Science Foundation for Distinguished Young Scholars[51625903] ; National Natural Science Foundation of China/Hong Kong Research Grants Council Joint Research Scheme[51861165104] ; Youth Innovation Promotion Association CAS[2017376] ; Yixing Taodu Talent program of Technology Innovation and Entrepreneurship leading Talent Project[CXTD201601C]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000597310200032
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25369]
专题	中科院武汉岩土力学所
作者单位	1.Suzhou Univ, Sch Resources & Civil Engn, Suzhou 234000, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Hubei Prov Key Lab Contaminated Sludge & Soil Sci, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.IRSM CAS HK PolyU Joint Lab Solid Waste Sci, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	He, Xingxing,Chen, Yijun,Tan, Xun,et al. Determining the water content and void ratio of cement-treated dredged soil from the hydration degree of cement[J]. ENGINEERING GEOLOGY,2020,279(-):11.
APA	He, Xingxing,Chen, Yijun,Tan, Xun,Wang, Shiquan,&Liu, Lei.(2020).Determining the water content and void ratio of cement-treated dredged soil from the hydration degree of cement.ENGINEERING GEOLOGY,279(-),11.
MLA	He, Xingxing,et al."Determining the water content and void ratio of cement-treated dredged soil from the hydration degree of cement".ENGINEERING GEOLOGY 279.-(2020):11.