Non-linear creep damage model of sandstone under freeze-thaw cycle

Li, Jielin; Zhu, Longyin; Zhou, Keping; Chen, Hui; Gao, Le; Lin, Yun; Shen, Yanjun

doi:10.1007/s11771-021-4656-3

Cited by 27 publications

(11 citation statements)

References 25 publications

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“…With the implementation of the country's western development strategy, the consumption of concrete is increasing day by day. In Inner Mongolia, river sand resources are scarce, aeolian sand reserves are abundant, and the rational development and utilization of aeolian sand resources is one of the most effective ways to solve these problems [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Aeolian Sand Powder Addition on Frost Resistance of Concrete Pavement

Zhao

Deng

2022

International Journal of Analytical Chemistry

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In order to solve the problem of exploring the freeze-thaw characteristics of modified aeolian sand mixed with cement and silt, the authors propose a freeze-thaw cycle test of modified aeolian sand under the condition of mixing 5% cement and silt with different contents. In this experiment, under freeze-thaw conditions, its intensity decay and mass volume change law and the changes of freeze-thaw characteristics were comprehensively characterized by multiple indicators. The result shows that, after two freeze-thaw cycles, the compressive strength and peak strain of the improved aeolian sand were positively correlated with the silt content. With the increase of the number of freeze-thaw cycles, the compressive and antidestruction capacity of the improved aeolian sand with high silt content and low silt content decreased significantly. 15% silt content improves the structural stability of aeolian sand. It is proved that the authors’ experiment can intuitively and effectively reflect the change law of soil strength after freezing and thawing of such improved aeolian sandy soil, which has displayed significance.

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Section: Introductionmentioning

confidence: 99%

Effect of Aeolian Sand Powder Addition on Frost Resistance of Concrete Pavement

Zhao

Deng

2022

International Journal of Analytical Chemistry

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“…The loading scheme is shown in Table 2. The creep stability criterion was that the axial deformation of the sample was less than 0.01 mm in 24 h. Red clay has the characteristics of high strength, low compressibility, etc., and the sample can basically reach the stability criterion within 24 h after loading [17], so the loading time of each stage of loading was set to 24 h. The loaded sample was then loaded with deviatoric stress of 80% and 90% as the magnitude of each stage of loading.…”

Section: Triaxial Creep Test Schemementioning

confidence: 99%

“…In order to establish a new soft soil fractional order creep model, the model calculation results and the experimental results needed to have good consistency between them and, compared with the traditional model, the model had higher accuracy and convenience. Focusing on the creep characteristics of red clay, Li et al [17] studied the effect of densification on the creep characteristics of red clay in the Changsha area. Sun et al [18] carried out triaxial creep tests under suction control conditions to study the creep characteristics and long-term strength of unsaturated red clay in the Shaanxi region.…”

Section: Introductionmentioning

confidence: 99%

Creep Properties and Creep Modelling of Guilin Red Clay

Wei,

Gu,

Liu

et al. 2023

Applied Sciences

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In order to explore the creep characteristics of red clay under different pressures, the stress–strain curve and stress–strain–time curve of red clay under different pressures were obtained, and the triaxial shear and creep characteristics of red clay under different pressures were analysed. A triaxial shear test and creep test were carried out on red clay from Guilin as the research object under different pressures. The results show that: ➀ the cohesion and the angle of internal friction of red clay from Guilin, obtained from a triaxial shear test, are 57.20 kPa and 22.47°, respectively; ➁ according to the physical meaning of the parameters of the Burgers creep model, a simple and practical parameter inversion method is proposed, which can be used to obtain the parameters of the Burgers model for red clay under different perimeter pressures and differing deviatoric stress; and ➂ when comparing the calculation results with the test results, the correlation coefficients R2 of the two are above 0.9, with a good fitting effect, so the model can accurately describe the creep characteristics of red clay from Guilin. This study can provide a theoretical basis and technical support for engineering construction in the red clay area of Guilin.

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“…In terms of the Lemaitre strain equivalence hypothesis, Chen et al [ 13 ] established a jointed rock mass composite damage model, considering macroscopic and microscopic defects. Liu et al [ 14 ] used the definition of damage and the Lemaitre strain equivalent equation to establish a freeze–thaw damage evolution equation in the constant creep stage. According to the von Mises yield criterion, a damage formula for freeze–thaw and creep changes throughout the nonlinear creep stage was constructed.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional nonlinear model of rock creep under freeze–thaw cycles

Wang

et al. 2023

PLoS ONE

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In areas with large differences between day and night temperature, the freeze–thaw cycle and frost heaving force in rock mass generate cracks within the rock, which seriously threatens the stability and safety of geotechnical engineering structures and surrounding buildings. This problem can be solved by developing a reasonable model that accurately represents the rock creep behavior. In this study, we developed a nonlinear viscoelastic–plastic creep damage model by introducing material parameters and a damage factor while connecting an elastomer, a viscosity elastomer, a Kelvin element, and a viscoelastic–plastic element in series. One- and three-dimensional creep equations were derived, and triaxial creep data were used to determine the model parameters and to validate the model. The results showed that the nonlinear viscoelastic–plastic creep damage model can accurately describe rock deformation in three creep stages under freeze–thaw cycles. In addition, the model can describe the time-dependent strain in the third stage. Parameters G1, G2, and η20’ decrease exponentially with the increase in the number of freeze–thaw cycles while parameter λ increases exponentially. These results provide a theoretical basis for studying the deformation behavior and long-term stability of geotechnical engineering structures in areas with large diurnal temperature differences.

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Non-linear creep damage model of sandstone under freeze-thaw cycle

Cited by 27 publications

References 25 publications

Effect of Aeolian Sand Powder Addition on Frost Resistance of Concrete Pavement

Effect of Aeolian Sand Powder Addition on Frost Resistance of Concrete Pavement

Creep Properties and Creep Modelling of Guilin Red Clay

Three-dimensional nonlinear model of rock creep under freeze–thaw cycles

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