Low amplitude fatigue performance of sandstone, marble, and granite under high static stress

Du, Kun; Sun, Yu; Zhou, Jian; Wang, Shaofeng; Tao, Ming; Yang, Congren; Khandelwal, Manoj

doi:10.1007/s40948-021-00266-1

Cited by 14 publications

(4 citation statements)

References 43 publications

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“…Young's modulus of granite in the loading process increases in the first cycle and then gradually decreases as the cyclic number increases. In the first cycle, the original and thermally induced defects in granite are closed and compacted, leading to the increasing Young's modulus 46 . Meanwhile, Young's modulus in unloading process presents a monotonous decreasing trend as the cyclic number increases.…”

Section: Resultsmentioning

confidence: 99%

“…In the first cycle, the original and thermally induced defects in granite are closed and compacted, leading to the increasing Young's modulus. 46 Meanwhile, Young's modulus in unloading process presents a monotonous decreasing trend as the cyclic number increases. Therefore, apart from the first cycle, Young's moduli of granite in loading and unloading processes decrease as the cyclic number increases.…”

Section: Variation In Fatigue Deformation Of Granite With the Cyclic ...mentioning

confidence: 99%

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Evolution of mechanical properties and microstructure in thermally treated granite subjected to cyclic loading

Fan,

Wang,

Qiu

et al. 2024

Fatigue Fract Eng Mat Struct

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In high‐temperature geological engineering applications, cyclic loads induced by various factors (e.g., earthquakes, excavation, and blasting) can exacerbate the thermal damage of engineered rock formations. Therefore, this study investigates the mechanical properties and microstructure evolution of thermally treated granite subjected to cyclic loading. First, the mechanical property variations of thermally treated granite under cyclic loading were studied through cyclic loading experiments. Subsequently, nuclear magnetic resonance (NMR) was employed to examine the microstructure evolution of thermally treated granite under cyclic loading. Lastly, the effects of cyclic loading on maximum strain, Young's modulus, pore size distribution, and porosity of thermally treated granite were discussed. Results indicate that at the same number of cycles, maximum strain increases with increasing temperature, while Young's modulus decreases. For granite subjected to the same thermal treatment, the maximum strain increases as the cyclic number increases, while Young's modulus decreases. Concurrently, porosity and fractal dimension initially decrease and then increase with a rising number of cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Variation In Fatigue Deformation Of Granite With the Cyclic ...mentioning

confidence: 99%

Evolution of mechanical properties and microstructure in thermally treated granite subjected to cyclic loading

Fan,

Wang,

Qiu

et al. 2024

Fatigue Fract Eng Mat Struct

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“…The HLW deep-buried point is in a state of high in situ stress. To safely bury it for a long period of time, three development stages of fatigue failure of rock mass under microseismic conditions should be considered [83]. Due to the continuous decay of nuclides, a large amount of heat is released, and the temperature at the deep burial point is high and subject to fluctuating changes.…”

Section: Co2 and Radioactive Waste Sequestrationmentioning

confidence: 99%

Utilization Methods and Practice of Abandoned Mines and Related Rock Mechanics under the Ecological and Double Carbon Strategy in China—A Comprehensive Review

Xie

Khandelwal

et al. 2022

Minerals

Self Cite

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Governance of abandoned mines has become a pressing issue for China. The utilization of abandoned mines is a technology that can solve the problem of governance and recreate the value of mines, which is in line with the current strategic goals of ecological protection and double carbon in China. In this paper, the various utilization models and the advances in rock mechanics of abandoned mines across the globe are summarized and reviewed. The utilization models of abandoned mines can be categorized into four aspects: Energy storage, Waste treatment, Ecological restoration, and carbon dioxide (CO2) sequestration. There are a number of applications and uses of abandoned mines, such as pumped storage, compressed air storage, salt cavern gas/oil storage construction, carbon dioxide storage and utilization, radioactive waste disposal and treatment, and tourism development. Various progress practices of abandoned mines are discussed in detail with emphasis on the national conditions of China. The basic rock mechanics problems and advances involved in the construction of the facilities related to the utilization of abandoned mines are discussed and evaluated. The establishment of relevant research and experimental platforms will contribute to the sustainable development of China’s mining industry and the improvement of clean technologies.

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“…With the aim of ensuring safety in deep mining and other underground projects, many studies have been carried out on fractured rock masses [ 13 , 14 , 15 , 16 , 17 , 18 ], and some researchers have studied the factual damage of preflawed rocks in different ways [ 19 , 20 , 21 ]. As known to all, the loading condition could profoundly affect rock distress, as well as the rock type [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Mechanical and Fracture Behavior of Parallel Double Flawed Granite Material under Impact with Digital Image Correlation

Zhang

Chen

et al. 2023

Materials

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During the excavation of underground projects, the rock masses left as the bearing support system are also subjected to dynamic loads from the excavation activities ahead. These rock masses have been damaged and fractured during the initial exposure (dynamic loads) and are subjected to static loads in the subsequent process as the support system. In this study, granite rock samples and specimens with different angles were produced, preloaded with different confining pressure, and under a combination of dynamic and static loading tests using a modified dynamic and static loading system: split Hopkinson pressure bar (SHPB). The peak strain and dynamic modulus of elasticity are weakened by the inclination angle in a similar way to the strength, with the specimens showing an evolutionary pattern from tensile strain to shear damage. The change in the inclination angle of flaws would weaken the dynamic and combined strengths, and a larger inclination flaw results in a significant decrease in its strength. Fractal analysis revealed that the fractural dimension was closely related to the fissure angle and showed a good linear correlation with the strain rate. This study will provide an important security assurance for deep mining.

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Low amplitude fatigue performance of sandstone, marble, and granite under high static stress

Cited by 14 publications

References 43 publications

Evolution of mechanical properties and microstructure in thermally treated granite subjected to cyclic loading

Evolution of mechanical properties and microstructure in thermally treated granite subjected to cyclic loading

Utilization Methods and Practice of Abandoned Mines and Related Rock Mechanics under the Ecological and Double Carbon Strategy in China—A Comprehensive Review

Experimental Investigation of Mechanical and Fracture Behavior of Parallel Double Flawed Granite Material under Impact with Digital Image Correlation

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