Patterns of Nonlinear Shear Stiffness Degradation of Reconstituted Clay with Different Stress Histories

Young Hoon Jung; Jinhyun Choo; Wanjei Cho; Choong Ki Chung

doi:10.1080/1064119X.2012.676158

Patterns of Nonlinear Shear Stiffness Degradation of Reconstituted Clay with Different Stress Histories

Young Hoon Jung
, Jinhyun Choo
, Wanjei Cho
, Choong Ki Chung

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

5 Citations (Scopus)

Abstract

This paper describes patterns of nonlinear shear stiffness degradation with respect to the stress history of clay. An experimental study using undrained triaxial compression tests was conducted on specimens cut from reconstituted clay samples of kaolinite. The nonlinear pattern of stiffness degradation was analyzed within the frameworks of both the conventional overconsolidation ratio (OCR) and the stress path rotation angle. The experimental data were subsequently interpreted based on the concept of the kinematic sub-yield surface. The pattern of stiffness degradation is more relevant to the rotation angle of the current stress path than the OCR value. The sizes of the sub-yield surfaces are variable. Results show that the kinematic movements of sub-yield surfaces within the overall bounding surface may provide an insufficient tool to fully describe the pattern of stiffness degradation.

Original language	English
Pages (from-to)	309-331
Number of pages	23
Journal	Marine Georesources and Geotechnology
Volume	31
Issue number	4
DOIs	https://doi.org/10.1080/1064119X.2012.676158
Publication status	Published - Oct 2013

Bibliographical note

Funding Information:
Received 9 November 2011; accepted 12 March 2012. This work was supported by the Integrated Research Institute of Construction and Environmental Engineering at Seoul National University, and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science (2012-0003341). This support is gratefully acknowledged. Address correspondence to Jinhyun Choo, Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA. E-mail: [email protected]

Keywords

seafloor
sediments
surveys

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10.1080/1064119X.2012.676158

Cite this

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title = "Patterns of Nonlinear Shear Stiffness Degradation of Reconstituted Clay with Different Stress Histories",

abstract = "This paper describes patterns of nonlinear shear stiffness degradation with respect to the stress history of clay. An experimental study using undrained triaxial compression tests was conducted on specimens cut from reconstituted clay samples of kaolinite. The nonlinear pattern of stiffness degradation was analyzed within the frameworks of both the conventional overconsolidation ratio (OCR) and the stress path rotation angle. The experimental data were subsequently interpreted based on the concept of the kinematic sub-yield surface. The pattern of stiffness degradation is more relevant to the rotation angle of the current stress path than the OCR value. The sizes of the sub-yield surfaces are variable. Results show that the kinematic movements of sub-yield surfaces within the overall bounding surface may provide an insufficient tool to fully describe the pattern of stiffness degradation.",

keywords = "seafloor, sediments, surveys",

author = "Jung, \{Young Hoon\} and Jinhyun Choo and Wanjei Cho and Chung, \{Choong Ki\}",

note = "Funding Information: Received 9 November 2011; accepted 12 March 2012. This work was supported by the Integrated Research Institute of Construction and Environmental Engineering at Seoul National University, and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science (2012-0003341). This support is gratefully acknowledged. Address correspondence to Jinhyun Choo, Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA. E-mail: [email protected]",

year = "2013",

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doi = "10.1080/1064119X.2012.676158",

language = "English",

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T1 - Patterns of Nonlinear Shear Stiffness Degradation of Reconstituted Clay with Different Stress Histories

AU - Jung, Young Hoon

AU - Choo, Jinhyun

AU - Cho, Wanjei

AU - Chung, Choong Ki

N1 - Funding Information: Received 9 November 2011; accepted 12 March 2012. This work was supported by the Integrated Research Institute of Construction and Environmental Engineering at Seoul National University, and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science (2012-0003341). This support is gratefully acknowledged. Address correspondence to Jinhyun Choo, Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305, USA. E-mail: [email protected]

PY - 2013/10

Y1 - 2013/10

N2 - This paper describes patterns of nonlinear shear stiffness degradation with respect to the stress history of clay. An experimental study using undrained triaxial compression tests was conducted on specimens cut from reconstituted clay samples of kaolinite. The nonlinear pattern of stiffness degradation was analyzed within the frameworks of both the conventional overconsolidation ratio (OCR) and the stress path rotation angle. The experimental data were subsequently interpreted based on the concept of the kinematic sub-yield surface. The pattern of stiffness degradation is more relevant to the rotation angle of the current stress path than the OCR value. The sizes of the sub-yield surfaces are variable. Results show that the kinematic movements of sub-yield surfaces within the overall bounding surface may provide an insufficient tool to fully describe the pattern of stiffness degradation.

AB - This paper describes patterns of nonlinear shear stiffness degradation with respect to the stress history of clay. An experimental study using undrained triaxial compression tests was conducted on specimens cut from reconstituted clay samples of kaolinite. The nonlinear pattern of stiffness degradation was analyzed within the frameworks of both the conventional overconsolidation ratio (OCR) and the stress path rotation angle. The experimental data were subsequently interpreted based on the concept of the kinematic sub-yield surface. The pattern of stiffness degradation is more relevant to the rotation angle of the current stress path than the OCR value. The sizes of the sub-yield surfaces are variable. Results show that the kinematic movements of sub-yield surfaces within the overall bounding surface may provide an insufficient tool to fully describe the pattern of stiffness degradation.

KW - seafloor

KW - sediments

KW - surveys

UR - https://www.scopus.com/pages/publications/84880027986

U2 - 10.1080/1064119X.2012.676158

DO - 10.1080/1064119X.2012.676158

M3 - Article

AN - SCOPUS:84880027986

SN - 1064-119X

VL - 31

SP - 309

EP - 331

JO - Marine Georesources and Geotechnology

JF - Marine Georesources and Geotechnology

IS - 4

ER -

Patterns of Nonlinear Shear Stiffness Degradation of Reconstituted Clay with Different Stress Histories

Abstract

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Keywords

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