Particle erosion in suffusion under isotropic and anisotropic stress states

Yue Liang, Tian-Chyi J Yeh, Qingkong Chen, Wei Xu, X. Dang, Yonghong Hao

Research output: Contribution to journalArticle

Abstract

In this study, a set of laboratory experiments is conducted to investigate the erosion behaviors of soils subjected to suffusion under isotropic and anisotropic stress states. The results show that the amount of eroded particles gradually increases with the erosion time under isotropic stress states. The final accumulative particle loss approaches a constant if the erosion time is sufficiently long under a given erosion gradient. The erosion behaviors under anisotropic stress states are similar to those under isotropic stress states, as long as the amount of particle loss is small. However, if the erosion amount is high enough to reach a critical value, the specimen collapses and undergoes significant volumetric deformation. Based on these erosion behaviors, an analytical expression for the erosion rate is developed to quantify the erodibility of cohesionless soils. Moreover, an energy-based model is used to interpret the erodibility of soils. The mechanism of the effects of the stress state on the erosion behaviors, especially the collapse of specimens, is explained. It is concluded that the evolution of the strain-stress behaviors and the rearrangement of the microstructure are the main reasons for the differences between the erosion behaviors under isotropic and anisotropic stress conditions.

Original languageEnglish (US)
JournalSoils and Foundations
DOIs
StateAccepted/In press - Jan 1 2019

Fingerprint

Erosion
erosion
erodibility
Soils
particle
cohesionless soil
erosion rate
microstructure
soil
Microstructure
energy

Keywords

  • Cohesionless soil
  • Erodibility
  • Erosion rate
  • Stress state
  • Suffusion

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

Cite this

Particle erosion in suffusion under isotropic and anisotropic stress states. / Liang, Yue; Yeh, Tian-Chyi J; Chen, Qingkong; Xu, Wei; Dang, X.; Hao, Yonghong.

In: Soils and Foundations, 01.01.2019.

Research output: Contribution to journalArticle

Liang, Yue ; Yeh, Tian-Chyi J ; Chen, Qingkong ; Xu, Wei ; Dang, X. ; Hao, Yonghong. / Particle erosion in suffusion under isotropic and anisotropic stress states. In: Soils and Foundations. 2019.
@article{ce8b5cd215f2436eadb51616cedd3a49,
title = "Particle erosion in suffusion under isotropic and anisotropic stress states",
abstract = "In this study, a set of laboratory experiments is conducted to investigate the erosion behaviors of soils subjected to suffusion under isotropic and anisotropic stress states. The results show that the amount of eroded particles gradually increases with the erosion time under isotropic stress states. The final accumulative particle loss approaches a constant if the erosion time is sufficiently long under a given erosion gradient. The erosion behaviors under anisotropic stress states are similar to those under isotropic stress states, as long as the amount of particle loss is small. However, if the erosion amount is high enough to reach a critical value, the specimen collapses and undergoes significant volumetric deformation. Based on these erosion behaviors, an analytical expression for the erosion rate is developed to quantify the erodibility of cohesionless soils. Moreover, an energy-based model is used to interpret the erodibility of soils. The mechanism of the effects of the stress state on the erosion behaviors, especially the collapse of specimens, is explained. It is concluded that the evolution of the strain-stress behaviors and the rearrangement of the microstructure are the main reasons for the differences between the erosion behaviors under isotropic and anisotropic stress conditions.",
keywords = "Cohesionless soil, Erodibility, Erosion rate, Stress state, Suffusion",
author = "Yue Liang and Yeh, {Tian-Chyi J} and Qingkong Chen and Wei Xu and X. Dang and Yonghong Hao",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.sandf.2019.06.009",
language = "English (US)",
journal = "Soils and Foundations",
issn = "0038-0806",
publisher = "Japanese Geotechnical Society",

}

TY - JOUR

T1 - Particle erosion in suffusion under isotropic and anisotropic stress states

AU - Liang, Yue

AU - Yeh, Tian-Chyi J

AU - Chen, Qingkong

AU - Xu, Wei

AU - Dang, X.

AU - Hao, Yonghong

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In this study, a set of laboratory experiments is conducted to investigate the erosion behaviors of soils subjected to suffusion under isotropic and anisotropic stress states. The results show that the amount of eroded particles gradually increases with the erosion time under isotropic stress states. The final accumulative particle loss approaches a constant if the erosion time is sufficiently long under a given erosion gradient. The erosion behaviors under anisotropic stress states are similar to those under isotropic stress states, as long as the amount of particle loss is small. However, if the erosion amount is high enough to reach a critical value, the specimen collapses and undergoes significant volumetric deformation. Based on these erosion behaviors, an analytical expression for the erosion rate is developed to quantify the erodibility of cohesionless soils. Moreover, an energy-based model is used to interpret the erodibility of soils. The mechanism of the effects of the stress state on the erosion behaviors, especially the collapse of specimens, is explained. It is concluded that the evolution of the strain-stress behaviors and the rearrangement of the microstructure are the main reasons for the differences between the erosion behaviors under isotropic and anisotropic stress conditions.

AB - In this study, a set of laboratory experiments is conducted to investigate the erosion behaviors of soils subjected to suffusion under isotropic and anisotropic stress states. The results show that the amount of eroded particles gradually increases with the erosion time under isotropic stress states. The final accumulative particle loss approaches a constant if the erosion time is sufficiently long under a given erosion gradient. The erosion behaviors under anisotropic stress states are similar to those under isotropic stress states, as long as the amount of particle loss is small. However, if the erosion amount is high enough to reach a critical value, the specimen collapses and undergoes significant volumetric deformation. Based on these erosion behaviors, an analytical expression for the erosion rate is developed to quantify the erodibility of cohesionless soils. Moreover, an energy-based model is used to interpret the erodibility of soils. The mechanism of the effects of the stress state on the erosion behaviors, especially the collapse of specimens, is explained. It is concluded that the evolution of the strain-stress behaviors and the rearrangement of the microstructure are the main reasons for the differences between the erosion behaviors under isotropic and anisotropic stress conditions.

KW - Cohesionless soil

KW - Erodibility

KW - Erosion rate

KW - Stress state

KW - Suffusion

UR - http://www.scopus.com/inward/record.url?scp=85070356722&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85070356722&partnerID=8YFLogxK

U2 - 10.1016/j.sandf.2019.06.009

DO - 10.1016/j.sandf.2019.06.009

M3 - Article

AN - SCOPUS:85070356722

JO - Soils and Foundations

JF - Soils and Foundations

SN - 0038-0806

ER -