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Modulus Number and Reference Tangent Modulus of Clays in the Red River Delta
This study presents an investigation of Janbu modulus number (m) and reference tangent modulus (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$E^{\text{ref}}_{\text{oed}}$$\end{document}) of clays in the Red River delta. These are important input parameters in different nonlinear constitutive soil models. Results of standard consolidation test obtained on 190 soil samples from 12 test sites over the delta were analyzed. The m was found to range mostly from 8 through 30, agreeing well with typical values of soft to stiff clays in the literature. The m value determined from cumulative strain (εv)—applied stress (σ′v) curve was found to be on average 1.25 times larger than the value determined from the tangent modulus (Mt)—applied stress (σ′v) curve. This can mainly be attributed to natural structure and heterogeneity of intact soils. The \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$E^{\text{ref}}_{\text{oed}}$$\end{document} value of the clays was found to range from 1.0 to 6.0 MPa and to have no clear correlations with m, cone resistance (qt) but a relatively good nonlinear correlation with Cc.
Modulus Number and Reference Tangent Modulus of Clays in the Red River Delta
This study presents an investigation of Janbu modulus number (m) and reference tangent modulus (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$E^{\text{ref}}_{\text{oed}}$$\end{document}) of clays in the Red River delta. These are important input parameters in different nonlinear constitutive soil models. Results of standard consolidation test obtained on 190 soil samples from 12 test sites over the delta were analyzed. The m was found to range mostly from 8 through 30, agreeing well with typical values of soft to stiff clays in the literature. The m value determined from cumulative strain (εv)—applied stress (σ′v) curve was found to be on average 1.25 times larger than the value determined from the tangent modulus (Mt)—applied stress (σ′v) curve. This can mainly be attributed to natural structure and heterogeneity of intact soils. The \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$E^{\text{ref}}_{\text{oed}}$$\end{document} value of the clays was found to range from 1.0 to 6.0 MPa and to have no clear correlations with m, cone resistance (qt) but a relatively good nonlinear correlation with Cc.
Modulus Number and Reference Tangent Modulus of Clays in the Red River Delta
Lecture Notes in Civil Engineering
Duc Long, Phung (editor) / Dung, Nguyen Tien (editor) / Nguyen, Tien Dung (author) / Nguyen, Cong Kien (author) / Chung, Sung Gyo (author) / Fellenius, Bengt H. (author)
International Conference on Geotechnics for Sustainable Infrastructure Development ; 2023 ; Hanoi, Vietnam
2024-07-11
14 pages
Article/Chapter (Book)
Electronic Resource
English
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