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Effect of initial water content and pore water chemistry on intrinsic compression behavior

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Chai, Jin-Chun, Shen, Shui-long and Geng, Xueyu (2019) Effect of initial water content and pore water chemistry on intrinsic compression behavior. Marine Georesources & Geotechnology, 37 (4). pp. 417-423. doi:10.1080/1064119X.2018.1445146

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Official URL: https://doi.org/10.1080/1064119X.2018.1445146

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Abstract

The effect of initial water content (w0) and pore water chemistry on the intrinsic compression curve of clays was investigated experimentally. The test results indicate that w0 had a considerable effect on the intrinsic compression curve of a clay, and the degree of the effect is a function of pore water chemistry. The fundamental mechanism of the effect of w0 and pore water chemistry on the intrinsic compression curve is through its influence on the microstructure of clays. For relatively stable flocculated microstructures, the effect of w0 will disappear under a small value of effective vertical consolidation stress, σ′v, for example, σ′v < 20 kPa; under one-dimensional deformation condition, but for a dispersive microstructure, the effect of w0 can remain up to σ′v > 1,000 kPa. Furthermore, it has been shown that when σ′v is larger than the remolded yield stress, almost all the test data follow the intrinsic compression line (ICL) proposed by Burland. Finally, based on the test data, a new equation for estimating void ratio () under σ′v = 100 kPa on ICL from the void ratio (el) corresponding to the liquid limit water content has been proposed.

Item Type: Journal Article
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Water chemistry, Clay -- Microstructure, Geotechnical engineering
Journal or Publication Title: Marine Georesources & Geotechnology
Publisher: Taylor & Francis Inc.
ISSN: 1521-0618
Official Date: 2019
Dates:
DateEvent
2019Published
20 March 2018Available
20 February 2018Accepted
Volume: 37
Number: 4
Page Range: pp. 417-423
DOI: 10.1080/1064119X.2018.1445146
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
17K06558Japan Society for the Promotion of Sciencehttp://dx.doi.org/10.13039/501100001691
51578333National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
Conference Paper Type: Paper
Type of Event: Conference

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