Changes in properties of alpha-quartz and feldspars under 3 MeV Si-ion irradiation

Luu, Vu Nhut; Murakami, Kenta; Samouh, Hamza; Maruyama, Ippei; Ohkubo, Takahiro; Tom, Phongsakorn Prak; Chen, Liang; Kano, Shinzo; Yang, Huilong; Abe, Hiroaki; Suzuki, Kenkichi; Suzuki, Masahide

doi:10.1016/j.jnucmat.2020.152734

Cited by 10 publications

(13 citation statements)

References 39 publications

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“…These results indicate that Young's modulus decreases as the proportions of Na and Si elements decrease and the proportions of Ca and Al elements increase. Comparisons showed that the experimental values for albite were within the range of the (Luu et al 2021). Therefore, this result supports the accuracy of the calculations in this study.…”

Section: Young's Modulussupporting

confidence: 89%

“…Young's modulus has characteristics that depend on the type of mineral. -quartz had almost no anisotropy, as mentioned earlier, and the calculated value was about 80% of the experimental value (Luu et al 2021). By contrast, the Young's modulus of K-feldspar was significantly anisotropic.…”

Section: Young's Modulussupporting

confidence: 69%

“…For orthoclase, the largest component E y was 3.3 times larger than the smallest. As microcline is highly anisotropic, it is difficult to make comparisons directly with experimental value (Luu et al 2021). In such a comparison, the experimental values would be contained in the range from the lowest value, E x , to the highest value, E y , and E iso would be about 1.4 times the corresponding experimental value (Luu et al 2021).…”

Section: Young's Modulusmentioning

confidence: 99%

“…As microcline is highly anisotropic, it is difficult to make comparisons directly with experimental value (Luu et al 2021). In such a comparison, the experimental values would be contained in the range from the lowest value, E x , to the highest value, E y , and E iso would be about 1.4 times the corresponding experimental value (Luu et al 2021). The anisotropy of Na-feldspar showed a similar trend to that of K-feldspar, with E y more than twice as large as E x .…”

Section: Young's Modulusmentioning

confidence: 99%

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Study of Mechanical Properties of Silicate Minerals by Molecular Dynamics Simulation

Fujimura,

Hakozaki,

Sakuragi

et al. 2023

ACT

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The aging and damage of concrete buildings and structures is a problem in modern society. This is especially true for nuclear power plant buildings, which are required to have high safety standards. In this study, molecular dynamics simulations were performed to obtain mechanical properties for silicate minerals, including quartz, which is used as an aggregate in concrete. We also attempted to clarify phenomena including mechanical fracture. Mechanical properties of each mineral (Young's modulus, Poisson's ratio, and maximum stress) were obtained by performing tensile simulations on 10 silicate minerals which are -quartz, Orthoclase, Microcline, Albite, Oligoclase, Andesine, Labradorite, Augite, Diopside and Forsterite. Minerals other than -quartz were highly anisotropic with respect to Young's modulus. The maximum stress was highest for -quartz, but once a fracture started, the development of large fractures progressed at once and the stress relaxed rapidly. Deformation and fracture of the mineral in response to strain were analyzed by extracting the nonaffine component of the local displacement of atoms in tensile simulations. This analysis was able to explain the behavior of the stress-strain curve for each mineral. We also investigated how the composition of a mineral affects its mechanical fracture.

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Section: Young's Modulussupporting

confidence: 89%

Section: Young's Modulussupporting

confidence: 69%

Section: Young's Modulusmentioning

confidence: 99%

Section: Young's Modulusmentioning

confidence: 99%

See 2 more Smart Citations

Study of Mechanical Properties of Silicate Minerals by Molecular Dynamics Simulation

Fujimura,

Hakozaki,

Sakuragi

et al. 2023

ACT

Self Cite

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show abstract

“…1.5%) (Le Pape et al 2018). Therefore, specific importance was given to studying quartz swelling under neutron radiation (Luu et al 2020) and their comparison with feldspars (Luu et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Micro- and Macro-scale Mechanical Properties of Meta-cherts as Concrete Aggregates

Maekawa

Wang

Samouh

et al. 2023

ACT

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This paper presents the measurement of the tensile strength, Young's modulus, and linear coefficient of thermal expansion in a meta-chert. Two areas are targeted in this aggregate -a white area where quartz grains are densely compacted and a gray area where the quartz grains are coarser. The macro-and micro-scale data are compared. Young's modulus is not significantly different between macro-scale compression and micro-scale tension loading in the white region. Macro-scale splitting and micro-scale direct tensile strengths exhibit similar bimodal behavior due to the failure mechanisms of these two distinct areas. The macro-and micro-scale coefficients of thermal expansion are similar for the gray region, reflecting the quartz nature. Conversely, the micro-scale coefficient of thermal expansion of the white area shows a different behavior.

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Quantification analysis of geometric characteristics of micro crack network on fault rock surface

Liu

Zhang

et al. 2022

Environ Earth Sci

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Fault is a common water conduit in coal mine, and the cracks of fault rock will greatly affect its permeability. In this study, three fault samples obtained in the mining area in Southwest Shandong of China was tested and observed by SEM, XRD and plane-polarized light microscope. The geometric characteristics, including crack density, fractal dimension and crack connectivity, of the crack network on the sample surface were calculated. Combined with the mineral content obtained by XRD, the nonuniformity coe cient of mineral composition in rock is de ned. The results show that the crack geometric characteristics of the three samples are quite different and the above geometric parameters of crack network on three fault rock samples are correlated. The optical photomicrographs and SEM images show that the crack network is developed most in the fault rock samples with the least clay content. The study suggests that the nonuniformity coe cient of rock samples is positively correlated with the geometric characteristic of crack network. The difference in the crack network of fault rock samples is related to the coe cient of friction of clay.Optical photomicrographs of fault samples: (a) one main crack (b) micro cracks which are circled in red

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Changes in properties of alpha-quartz and feldspars under 3 MeV Si-ion irradiation

Cited by 10 publications

References 39 publications

Study of Mechanical Properties of Silicate Minerals by Molecular Dynamics Simulation

Study of Mechanical Properties of Silicate Minerals by Molecular Dynamics Simulation

Micro- and Macro-scale Mechanical Properties of Meta-cherts as Concrete Aggregates

Quantification analysis of geometric characteristics of micro crack network on fault rock surface

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