Secondary compression features of Jiangsu soft marine clay

Linchang Miao; Edward Kavazanjian

doi:10.1080/10641190701380258

Secondary compression features of Jiangsu soft marine clay

Linchang Miao, Edward Kavazanjian

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The results of one-dimensional compression tests conducted on undisturbed specimens of Jiangsu soft marine clay is presented. Because of its high in situ void ratios and natural water content, Jiangsu soft marine clay displays high values of both the virgin compression index, C_c, and the secondary compression coefficient, C_α. The laboratory data indicates that the value of the ratio C_α/C_c for Jiangsu soft marine clay is constant. However, neither C_α nor C_c are constant: they both depend upon the natural water content (or void ratio) and thus are also dependent on the deformation (or compression) of Jiangsu soft marine clay. Settlement analyses show that the secondary settlement of Jiangsu soft marine clay is a significant component of the field settlement. The concept of a constant value for C_α/C_c is used to predict the secondary settlement of a surcharged embankment founded upon Jiangsu soft marine clay. The predictions are in agreement with the limited post-construction field measurements of the embankment settlement.

Original language	English (US)
Pages (from-to)	129-144
Number of pages	16
Journal	Marine Georesources and Geotechnology
Volume	25
Issue number	2
DOIs	https://doi.org/10.1080/10641190701380258
State	Published - Apr 2007

Keywords

Consolidation
Creep
Secondary compression
Soft marine clay

ASJC Scopus subject areas

Oceanography
Geotechnical Engineering and Engineering Geology
Ocean Engineering

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10.1080/10641190701380258

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title = "Secondary compression features of Jiangsu soft marine clay",

abstract = "The results of one-dimensional compression tests conducted on undisturbed specimens of Jiangsu soft marine clay is presented. Because of its high in situ void ratios and natural water content, Jiangsu soft marine clay displays high values of both the virgin compression index, Cc, and the secondary compression coefficient, Cα. The laboratory data indicates that the value of the ratio Cα/Cc for Jiangsu soft marine clay is constant. However, neither Cα nor Cc are constant: they both depend upon the natural water content (or void ratio) and thus are also dependent on the deformation (or compression) of Jiangsu soft marine clay. Settlement analyses show that the secondary settlement of Jiangsu soft marine clay is a significant component of the field settlement. The concept of a constant value for Cα/Cc is used to predict the secondary settlement of a surcharged embankment founded upon Jiangsu soft marine clay. The predictions are in agreement with the limited post-construction field measurements of the embankment settlement.",

keywords = "Consolidation, Creep, Secondary compression, Soft marine clay",

author = "Linchang Miao and Edward Kavazanjian",

note = "Funding Information: Received 2 August 2006; accepted 28 March 2007. This work presented is carried out as a part of the project No. 50478072 supported by National Natural Science Foundation of China (NSFC). The authors wish to express their gratitude for the support given to this work by National Natural Science Foundation of China. Address correspondence to Linchang Miao, Institute of Geotechnical Engineering, South-east University, Nanjing 210096, China. E-mail: Lc.miao@seu.edu.cn; Lc.miao@jlonline.com",

year = "2007",

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doi = "10.1080/10641190701380258",

language = "English (US)",

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AU - Miao, Linchang

AU - Kavazanjian, Edward

N1 - Funding Information: Received 2 August 2006; accepted 28 March 2007. This work presented is carried out as a part of the project No. 50478072 supported by National Natural Science Foundation of China (NSFC). The authors wish to express their gratitude for the support given to this work by National Natural Science Foundation of China. Address correspondence to Linchang Miao, Institute of Geotechnical Engineering, South-east University, Nanjing 210096, China. E-mail: Lc.miao@seu.edu.cn; Lc.miao@jlonline.com

PY - 2007/4

Y1 - 2007/4

N2 - The results of one-dimensional compression tests conducted on undisturbed specimens of Jiangsu soft marine clay is presented. Because of its high in situ void ratios and natural water content, Jiangsu soft marine clay displays high values of both the virgin compression index, Cc, and the secondary compression coefficient, Cα. The laboratory data indicates that the value of the ratio Cα/Cc for Jiangsu soft marine clay is constant. However, neither Cα nor Cc are constant: they both depend upon the natural water content (or void ratio) and thus are also dependent on the deformation (or compression) of Jiangsu soft marine clay. Settlement analyses show that the secondary settlement of Jiangsu soft marine clay is a significant component of the field settlement. The concept of a constant value for Cα/Cc is used to predict the secondary settlement of a surcharged embankment founded upon Jiangsu soft marine clay. The predictions are in agreement with the limited post-construction field measurements of the embankment settlement.

AB - The results of one-dimensional compression tests conducted on undisturbed specimens of Jiangsu soft marine clay is presented. Because of its high in situ void ratios and natural water content, Jiangsu soft marine clay displays high values of both the virgin compression index, Cc, and the secondary compression coefficient, Cα. The laboratory data indicates that the value of the ratio Cα/Cc for Jiangsu soft marine clay is constant. However, neither Cα nor Cc are constant: they both depend upon the natural water content (or void ratio) and thus are also dependent on the deformation (or compression) of Jiangsu soft marine clay. Settlement analyses show that the secondary settlement of Jiangsu soft marine clay is a significant component of the field settlement. The concept of a constant value for Cα/Cc is used to predict the secondary settlement of a surcharged embankment founded upon Jiangsu soft marine clay. The predictions are in agreement with the limited post-construction field measurements of the embankment settlement.

KW - Consolidation

KW - Creep

KW - Secondary compression

KW - Soft marine clay

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Secondary compression features of Jiangsu soft marine clay

Abstract

Keywords

ASJC Scopus subject areas

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