Exploring the effects of particle shape and content of fines on the shear behavior of sand-fines mixtures via the DEM

J Gong, Z Nie, Y Zhu, Z Liang, X Wang - Computers and Geotechnics, 2019 - Elsevier
This report explores the effects of particle shape and content of fines on the shear behavior
of sand-fines mixtures using a two-dimensional discrete element method. The contributions …

Soil arching due to leaking of tunnel buried in water-rich sand

YY Long, Y Tan - Tunnelling and Underground Space Technology, 2020 - Elsevier
For tunnel buried in water-rich sand stratum, water intrusion into tunnel lining would bring
sand particles into the tunnel and then caused ground subsidence or even cave-in of …

A reinterpretation of the mechanical behavior of rubber-sand mixtures in direct shear testing

BB Dai, Q Liu, X Mao, PY Li, ZZ Liang - Construction and Building Materials, 2023 - Elsevier
The mechanical behaviors and properties of rubber-sand mixtures are interesting and of
practical importance but are not fully understood yet. In this study, 168 direct shear tests …

DEM investigation of strain behaviour and force chain evolution of gravel–sand mixtures subjected to cyclic loading

Z Nie, Q Qi, X Wang, Y Zhu - Particuology, 2022 - Elsevier
The strain characteristic and load transmission of mixed granular matter are different from
those of homogeneous granular matter. Cyclic loading renders the mechanical behaviours …

A state-dependent hyperelastic-plastic constitutive model considering shear-induced particle breakage in granular soils

N Irani, A Lashkari, M Tafili, T Wichtmann - Acta Geotechnica, 2022 - Springer
An elastic–plastic constitutive model considering particle breakage for simulation of
crushable granular soils behavior is proposed. In the model, elastic strain rates are derived …

Mechanical transitional behavior of binary mixtures via DEM: effect of differences in contact-type friction coefficients

J Gong, J Liu - Computers and Geotechnics, 2017 - Elsevier
This report presents a numerical investigation of the shear behavior of binary mixtures via a
two-dimensional discrete element method. The effect of the coarse particle content on the …

CFD-DEM study on transport and retention behaviors of nZVI-clay colloids in porous media

P Liu, S Nie, W Wang, S Zhang, B Bate… - Journal of Hazardous …, 2024 - Elsevier
Transportation process of nano scale zero valent iron (nZVI) in clay-rich soils is complicated
and crucial for in-situ remediation of contaminated sites. A coupled computational fluid …

Instability and liquefaction flow slide of granular soils: the role of initial shear stress

J Yang, LB Liang, Y Chen - Acta Geotechnica, 2022 - Springer
Loose granular soil, when subjected to shearing, may collapse rapidly to large strains with a
very low residual strength. This flow-type failure, known as flow slide or flow liquefaction, is a …

On the evaluation of internal stability of gap-graded soil: a status quo review

Z Xu, Y Ye - Natural Hazards, 2022 - Springer
Internal instability is a phenomenon of fine particle redistribution in granular materials under
the seepage action and consequent change in the soil's internal structure and hydraulic and …

Liquefaction susceptibility of clayey sands under saturated and partially saturated conditions

P Fardad Amini, J Yang - Géotechnique, 2023 - icevirtuallibrary.com
Experiences from previous earthquake events have indicated that sands containing non-
plastic (silt) or plastic (clay) fines are susceptible to liquefaction. These experiences …