Characterization of the deformation behavior of fine-grained sandstone by triaxial cyclic loading

Jia, Chaojun; Xu, Weiya; Wang, Rubin; Wang, Wei; Zhang, Jiuchang; Yu, Jun

doi:10.1016/j.conbuildmat.2017.12.001

Cited by 80 publications

(19 citation statements)

References 38 publications

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“…At higher confining pressures, peak stress which corresponds to failure is not easily recognized due to the large strain on a strain-hardening curve [22]. The Young's modulus values were calculated at each cycle as discussed previously [8,16] and are presented in Fig.3b…”

Section: Resultsmentioning

confidence: 99%

“…2), as well from each other, forming a narrow loop that can be approximated by a straight line. The Young's modulus of the material can be derived from the slope of this line [8,16]. In cyclic loading the strain is partly elastic and partly plastic.…”

Section: Methodsmentioning

confidence: 99%

“…In order to investigate the deformation characteristics and damage evolution with respect to rocks and concrete, it is necessary to perform a series of experiments. Many uniaxial and triaxial experiments under a loading-unloading-reloading regime (cyclic loading) have been conducted and are reported in the international literature (e.g., test on rocks [7,8] and concrete [9,10]). The authors have also performed such tests on mortars [1,11] and have shown that such specimens predominantly exhibit a plastic behavior.…”

Section: Introductionmentioning

confidence: 99%

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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

Kaklis

Agioutantis

Mavrigiannakis

et al. 2019

Frattura Ed Integrità Strutturale

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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 cyclic loading. Each test included a cyclic loading sequence using five loops in the pre-peak region. The experimental results showed that the specimens exhibit a strain-softening behavior for uniaxial and low pressure triaxial tests and a strain-hardening behavior for higher triaxial compression tests. The mortar specimens subjected to triaxial compressive cyclic loading at higher confining pressures failed along a single or conjugate shear planes accompanied by considerable lateral expansion. The marked Young's modulus degradation behavior in the prepeak region is related to damage that occurs in each specimen.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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

Kaklis

Agioutantis

Mavrigiannakis

et al. 2019

Frattura Ed Integrità Strutturale

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“…The cyclic loading and unloading test is an efficient method for accurately obtaining the elastic and plastic parameters of hard rock from its complete stress-strain curve. Numerous cyclic uniaxial and triaxial loading tests have been carried out to investigate the damage process of hard rock (Song et al 2013;Liu et al 2016;Jia et al 2018). However, the available true triaxial cyclic loading data are relatively rare due to the test complexity.…”

Section: Damage Evolution Of Hard Rock Subjected To Cyclic True Triaxmentioning

confidence: 99%

Damage and Failure of Hard Rocks Under True Triaxial Compression

Kong

Gao

Zhang

2020

Handbook of Damage Mechanics

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To reveal the effect of intermediate principal stress on the damage and failure of hard rocks, the failure evolution of hard rocks under true triaxial compression is reviewed, based on the previous study. From the viewpoint of crack growth under true triaxial compression, different fracture evolution stages of hard rocks, including the elastic stage, stable growth stage, and unstable growth stage, are introduced. Additionally, the effect of the intermediate principal stress on the crack stress thresholds is summarized. It is found that as the intermediate principal stress increases, its effect will first restrict and then promote crack propagation. The energy evolution of the rock cracking process under true triaxial compression is also analyzed. The damage evolution is quantified by damage

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“…The mechanical behavior of intermittent jointed rocks under random cyclic compression with different loading parameters was investigated by Liu et al [15], revealing the mechanical response of synthetic jointed rocks to the seismic loading. Jia et al [21] and Peng et al [22] carried out a series of triaxial cyclic compression tests, in order to characterize the deformation behavior under different confining pressures. In terms of nondestructive testing, Meng et al [23] explored AE characteristics of rock materials during the deformation and failure process under periodic loads, and the relationships among stress, strain, AE activity, accumulated AE activity, and duration under 36 loading and unloading rates were established.…”

Section: Introductionmentioning

confidence: 99%

Damage Evolution and Failure Behavior of Post-Mainshock Damaged Rocks under Aftershock Effects

et al. 2019

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Rock stability has long been a hot topic during underground energy exploitation, but the failure process of rock materials under earthquake effects is extremely complicated, and the failure mechanism still remains unclear. In order to investigate the fatigue damage and failure behavior of rocks under aftershock effects considering the post-mainshock damage states, a series of laboratory tests were conducted on marble specimens subjected to stepwise cyclic loading. Four levels of peak stress (i.e., 10, 30, 50, and 70 MPa) were applied in the first cycle, to simulate mainshock damage.The results indicate that, with the increase of initial cycle amplitude, mainshock damage has a significant effect on deformation behavior, dissipated energy, P-wave velocity, and AE characteristics of tested specimens during aftershock process. The increasing amplitude of initial cycle enhances irreversible deformation and weakens the resistance to deformation, which accelerates the expansion of specimen volume and results in the reduction of bearing capacity. Furthermore, the increasing amplitude of initial cycle obviously changes the failure morphologies and intensifies the final macro-fracture scale of tested specimens, which are verified by acoustic emission AF-RA value and b-value, respectively.

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Characterization of the deformation behavior of fine-grained sandstone by triaxial cyclic loading

Cited by 80 publications

References 38 publications

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

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

Damage and Failure of Hard Rocks Under True Triaxial Compression

Damage Evolution and Failure Behavior of Post-Mainshock Damaged Rocks under Aftershock Effects

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