Results 31 to 40 of about 994,024 (202)

Acoustic characterization of crack damage evolution in sandstone deformed under conventional and true triaxial loading [PDF]

open access: yes, 2017
We present a comparative study of crack damage evolution in dry sandstone under both conventional (σ1 > σ2 = σ3), and true triaxial (σ1 > σ2 > σ3) stress conditions using results from measurements made on cubic samples deformed in three orthogonal ...
Browning, J   +5 more
core   +2 more sources

Dynamic mechanical properties and failure criteria of concrete under true triaxial stress

open access: yesShuili Shuiyun Gongcheng Xuebao, 2021
The true triaxial compression tests under different stress ratios and different loading rates are conducted to study the static and dynamic mechanical properties of concrete structures under complex stress conditions.
XU Yuanyuan   +5 more
doaj   +1 more source

Experimental Study on Damage Characteristics of Coal Samples under True Triaxial Loading and Dynamic Unloading

open access: yesLithosphere, 2022
Coal bursts are one of the formidable hazards in underground coal mines, yet it is still not fully explored due to the complex stress environment that exists during mining.
Anye Cao   +5 more
doaj   +1 more source

Mathematical Model of Constitutive Relation and Failure Criteria of Plastic Concrete under True Triaxial Compressive Stress. [PDF]

open access: yesMaterials (Basel), 2020
To establish the mathematic model of the constitutive relation and failure criteria of plastic concrete under true triaxial compressive stress, uniaxial compressive strength and true triaxial compressive strength of plastic concrete under three kinds of ...
Hu L, Li S, Zhu J, Yang X.
europepmc   +2 more sources

Large-scale true-triaxial rock testing apparatus [PDF]

open access: yesEPJ Web of Conferences
The True-Triaxial Apparatus is designed to accommodate 30 x 30 x 45 cm rock specimens at the Institute of Geomechanics and Underground Technology (GUT), RWTH Aachen.
Cadmus Alexander, Fuentes Raul
doaj   +1 more source

True Triaxial Study on Aeolian Sand Subgrade

open access: yesJournal of Physics: Conference Series, 2021
Abstract The drained shear tests of aeolian sand in Tengger Desert were carried out by using the British GDS true triaxial apparatus, and the shear strength and stress-strain relationships of aeolian sand were studied under the conditions of constant average principal stress and different intermediate principal stress coefficients.
Chenyan Du, Zhigang Ma, Xuefeng Li
openaire   +1 more source

Strength and deformation properties of frozen sand under a true triaxial stress condition

open access: yesSoils and Foundations, 2022
In recent years, the mechanical properties of frozen soils under complex stress states have attracted significant attention; however, limited by the test apparatus, true triaxial tests on frozen soils have rarely been conducted. To study the strength and
Kun Huang   +3 more
doaj   +1 more source

True triaxial testing of sandstones and shales [PDF]

open access: yes, 2014
In this study deformational and failure properties of sandstones and shales have been evaluated through laboratory experiments under true triaxial stress conditions. The impacts of intermediate stress and water saturation were investigated.
Minaeian, Vida
core   +1 more source

True triaxial tests on transversely isotropic unsaturated loess

open access: yesYantu gongcheng xuebao, 2022
In order to study the mechanical properties of transversely isotropic unsaturated remolded loess under complex stress paths, two groups of 15 tests are carried out using the true triaxial apparatus.
GUO Nan 1, CHEN Zheng-han 1, 2, YANG Xiao-hui 1, GAO Deng-hui 3
doaj   +1 more source

Experimental study of mechanical properties of highly-stressed rocks under true triaxial unloading conditions with different unloading directions

open access: yesShuiwen dizhi gongcheng dizhi
During the excavation process of deep rock masses, the surrounding rock stress field forms alternating zones of stress increase (loading zones) and stress decrease (unloading zones) near the excavation surface, which can easily trigger instability and ...
Qian XIANG   +5 more
doaj   +1 more source

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