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Experimental study on the mechanical properties and deformation failure characteristics of sandstone under graded equal amplitude cyclic loading and unloading [PDF]

open access: yesScientific Reports
To investigate the effects of graded equal amplitude cyclic loading on rock deformation and failure, this study examines the influence of confining pressure and upper limit cyclic stress on the deformation parameters, stress–strain hysteresis curves, and
Zhiwei Ni   +5 more
doaj   +2 more sources

Dissipated energy in undrained cyclic triaxial tests [PDF]

open access: yes, 2015
Energy-based methods are an emerging tool for the evaluation of liquefaction potential. These methods relate excess pore water pressure build-up to seismic energy dissipated per unit volume. Further development of these methods require their validation through laboratory testing.
Azeiteiro, RJN   +3 more
openaire   +3 more sources

Comparison of sand liquefaction in cyclic triaxial and simple shear tests

open access: yesSoils and Foundations, 2021
The liquefaction resistance and correction factors Kσ and Kα of Nakdong River sand obtained from cyclic triaxial (CTX) tests were compared with those determined by cyclic simple shear (CSS) tests to ascertain the importance of the reduction factor Cr and
Zhen-Zhen Nong   +2 more
doaj   +3 more sources

A Bayesian Framework for the Calibration of Cyclic Triaxial Tests

open access: yesGeotechnics
This research presents the calibration of a constitutive model to replicate the cyclic performance of soils using a Bayesian framework. This study uses data from laboratory-conducted consolidated undrained isotropic cyclic triaxial tests and numerical ...
Luis Castillo-Suárez   +4 more
doaj   +2 more sources

Cyclic Triaxial Testing: A Primer

open access: yesJ
Cyclic triaxial tests are frequently used in the laboratory to assess the liquefaction susceptibility of soils. This paper will serve a two-fold purpose: First, it will serve to explain how the mechanics of the tests represent the stresses that occur in ...
Carmine Polito
doaj   +2 more sources

The correction factor of Monterey No. 0/30 sample with fines content liquefaction resistance between cyclic triaxial and cyclic hollow cylinder tests

open access: yesScientific Reports, 2022
Soil liquefaction is one of the most detrimental forms of earthquake-induced ground failure that can result in catastrophic damage to engineering structures.
Jungang Liu, Geng Chen
doaj   +1 more source

Derivation of Cyclic Stiffness and Strength Degradation Curves of Sands through Discrete Element Modelling

open access: yesModelling, 2022
Cyclic degradation in fully saturated sands is a liquefaction phenomenon characterized by the progressive variation of the soil strength and stiffness that occurs when the soil is subjected to cyclic loading in undrained conditions.
Fedor Maksimov, Alessandro Tombari
doaj   +1 more source

Mechanical Responses of a Deeply Buried Granite Exposed to Multilevel Uniaxial and Triaxial Cyclic Stresses: Insights into Deformation Behavior, Energy Dissipation, and Hysteresis

open access: yesAdvances in Materials Science and Engineering, 2021
This article presents the results for cyclic uni/triaxial tests on the deeply seated granite samples drilled from a −915 m deep tunnel in Sanshandao (SSD) gold mine.
Zhengyang Song   +5 more
doaj   +1 more source

Aging effects on liquefaction resistance of sand estimated from laboratory investigation

open access: yesSoils and Foundations, 2023
Liquefaction resistance is known to increase concomitantly with the increase in time after construction or sedimentation. Nevertheless, the mechanisms of its aging effect on liquefaction have not been completely elucidated.
Hirofumi Toyota, Susumu Takada
doaj   +1 more source

A simplified damage evolution relationship and deformation character¬istics of a pozzolanic lime mortar when subjected to unloading-reloading cycles in the pre-peak region

open access: yesFracture and Structural Integrity, 2019
Two series of uniaxial and triaxial compression tests including unloading-reloading cycles were performed under different confining press­ures, in order to study the stress-strain and the deformation behavior of a pozzolanic lime mortar subjected to ...
Kostas Kaklis   +3 more
doaj   +3 more sources

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