Effects of fine matters on strength and stiffness

Quy Ngoc Hoang; S. Y. Kim; J. U. Song; J. S. Lee

Effects of fine matters on strength and stiffness

Quy Ngoc Hoang, S. Y. Kim, J. U. Song, J. S. Lee

Research output: Contribution to conference › Paper › peer-review

Abstract

Deposits of fine matters (silt and diatom microfossils) are a common feature in many sites around the world (including Ulleung Basin, Korea, Osaka Bay, Japan, and Mexico City, Mexico), and the existence of such deposits affects soil strength. The objective of this study is to investigate the effects of fine organic matters on the strengths and stiffnesses of soils using a triaxial apparatus incorporated with bender elements. The specimens used are artificial mixtures of sand and organic matters with different fine fraction in weight. Note that in terms of weight, the fines consist of 30% diatom and 70% silt. In addition, the shear waves were measured during shearing. The experiment results illustrated that the shear strengths of soil mixtures increased with increasing fines up to 20%, then decreased with increasing fines thereafter 20%. The elastic wave result shows that shear wave velocity decreases due to changes in the fabrics of soils caused by the increase of fines. The results of this study established a huge impact of fine particles on the strengths and stiffnesses of soils.

Original language	English
Publication status	Published - 2020
Event	16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019 - Taipei, Taiwan, Province of China Duration: 2019 Oct 14 → 2019 Oct 18

Conference

Conference	16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019
Country/Territory	Taiwan, Province of China
City	Taipei
Period	19/10/14 → 19/10/18

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2017R1A2B3008466).

Publisher Copyright:
Copyright © Soil Mechanics and Geotechnical Engineering, ARC 2019.All rights reserved.

Keywords

Diatom
Fines
Shear wave
Silt
Strength
Triaxial

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology

Cite this

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title = "Effects of fine matters on strength and stiffness",

abstract = "Deposits of fine matters (silt and diatom microfossils) are a common feature in many sites around the world (including Ulleung Basin, Korea, Osaka Bay, Japan, and Mexico City, Mexico), and the existence of such deposits affects soil strength. The objective of this study is to investigate the effects of fine organic matters on the strengths and stiffnesses of soils using a triaxial apparatus incorporated with bender elements. The specimens used are artificial mixtures of sand and organic matters with different fine fraction in weight. Note that in terms of weight, the fines consist of 30% diatom and 70% silt. In addition, the shear waves were measured during shearing. The experiment results illustrated that the shear strengths of soil mixtures increased with increasing fines up to 20%, then decreased with increasing fines thereafter 20%. The elastic wave result shows that shear wave velocity decreases due to changes in the fabrics of soils caused by the increase of fines. The results of this study established a huge impact of fine particles on the strengths and stiffnesses of soils.",

keywords = "Diatom, Fines, Shear wave, Silt, Strength, Triaxial",

author = "Hoang, {Quy Ngoc} and Kim, {S. Y.} and Song, {J. U.} and Lee, {J. S.}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2017R1A2B3008466). Publisher Copyright: Copyright {\textcopyright} Soil Mechanics and Geotechnical Engineering, ARC 2019.All rights reserved.; 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019 ; Conference date: 14-10-2019 Through 18-10-2019",

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TY - CONF

T1 - Effects of fine matters on strength and stiffness

AU - Hoang, Quy Ngoc

AU - Kim, S. Y.

AU - Song, J. U.

AU - Lee, J. S.

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2017R1A2B3008466). Publisher Copyright: Copyright © Soil Mechanics and Geotechnical Engineering, ARC 2019.All rights reserved.

PY - 2020

Y1 - 2020

N2 - Deposits of fine matters (silt and diatom microfossils) are a common feature in many sites around the world (including Ulleung Basin, Korea, Osaka Bay, Japan, and Mexico City, Mexico), and the existence of such deposits affects soil strength. The objective of this study is to investigate the effects of fine organic matters on the strengths and stiffnesses of soils using a triaxial apparatus incorporated with bender elements. The specimens used are artificial mixtures of sand and organic matters with different fine fraction in weight. Note that in terms of weight, the fines consist of 30% diatom and 70% silt. In addition, the shear waves were measured during shearing. The experiment results illustrated that the shear strengths of soil mixtures increased with increasing fines up to 20%, then decreased with increasing fines thereafter 20%. The elastic wave result shows that shear wave velocity decreases due to changes in the fabrics of soils caused by the increase of fines. The results of this study established a huge impact of fine particles on the strengths and stiffnesses of soils.

AB - Deposits of fine matters (silt and diatom microfossils) are a common feature in many sites around the world (including Ulleung Basin, Korea, Osaka Bay, Japan, and Mexico City, Mexico), and the existence of such deposits affects soil strength. The objective of this study is to investigate the effects of fine organic matters on the strengths and stiffnesses of soils using a triaxial apparatus incorporated with bender elements. The specimens used are artificial mixtures of sand and organic matters with different fine fraction in weight. Note that in terms of weight, the fines consist of 30% diatom and 70% silt. In addition, the shear waves were measured during shearing. The experiment results illustrated that the shear strengths of soil mixtures increased with increasing fines up to 20%, then decreased with increasing fines thereafter 20%. The elastic wave result shows that shear wave velocity decreases due to changes in the fabrics of soils caused by the increase of fines. The results of this study established a huge impact of fine particles on the strengths and stiffnesses of soils.

KW - Diatom

KW - Fines

KW - Shear wave

KW - Silt

KW - Strength

KW - Triaxial

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M3 - Paper

AN - SCOPUS:85084945820

T2 - 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019

Y2 - 14 October 2019 through 18 October 2019

ER -

Effects of fine matters on strength and stiffness

Abstract

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

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