Application of clay minerals in the synthesis of cretaceous mudstones and microstructural analysis of their deterioration mechanism DOI Creative Commons
Shuai Yan, Lijun Han, Lingdong Meng

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 27, 2024

The Cretaceous mudstone undergoes significant argillization and disintegration when in contact with water due to its high content of clay minerals, posing a severe challenge the stability roadways coal mines during construction operation. This research aimed prepare water-sensitive mudstone–like materials by method mineral composition similar that natural reproduce mechanical hydraulic properties rocks meanwhile reveal deteriorating effect minerals on microstructure macroscopic properties. Using binary clay-gypsum mixtures considering aggregate-binder ratio, iron sand fine sand, powder aggregate as controlling factors, 16 groups proportioning schemes were established using orthogonal test series physic experiments conducted determine Subsequently, sensitivity analysis was applied characterize effects different influencing factors mudstone-like materials' result shows distribution ranges physical, mechanical, parameters newly prepared material overlap noticeably those mudstone, suggesting this new can better meet requirements modeling mudstone. In addition, range showed ratio dominant factor for material's UCS, E, cohesion, while had density time. Then, qualitative quantitative microstructural carried out SEM images four samples based kaolinite-gypsum Avizo software via dynamic threshold segmentation method. indicates microscopic parameters, such pore size distribution, equivalent diameter, porosity, fractal dimension, etc., are significantly altered increase kaolinite content, resulting marked deterioration micromechanical mineralogical change transforms cementation type from homogeneous dense crystalline anisotropic loose argillaceous cementation, exhibiting strong extremely weak macro properties, which explains mechanism mudstones micro point view. Importantly, synthesis mineralogy proposed study may be widely employed rock mechanics engineering.

Language: Английский

Probe into the mechanism of water absorption-disintegration of coal gangue aggregates and its influence on concrete properties DOI
Aiguo Wang, Yaohui Pan,

Lele Yu

et al.

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112321 - 112321

Published: March 1, 2025

Language: Английский

Citations

0
Impact of Clay Minerals on the Characteristic Strength and Nonlinear Dissipative Energy Modeling of Water-Saturation Mudstone DOI
Yugang Cheng, Rui Wu, Bo Hu

et al.

Rock Mechanics and Rock Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Language: Английский

Citations

0
Study on the deformation and failure mechanism of tertiary water-rich soft rock tunnels based on the moisture migration-fracture coupling model DOI
Kang Huang,

Huang Shuling,

Xiuli Ding

et al.

Tunnelling and Underground Space Technology, Journal Year: 2025, Volume and Issue: 163, P. 106715 - 106715

Published: May 5, 2025

Language: Английский

Citations

0
Deterioration Mechanism and Statistical Damage Constitutive Model of Red-Bed Soft Rock with Different Moisture Content DOI
Yizhe Wu, Huanling Wang, Yanjie Zhang

et al.

Pure and Applied Geophysics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Language: Английский

Citations

1
Impact of Temperature on the Hygroscopic Behavior and Mechanical Properties of Expansive Mudstone DOI Creative Commons
Lingdong Meng, Wenxiu Zhang, Haimeng Yang

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(24), P. 6491 - 6491

Published: Dec. 23, 2024

Aiming at the large-scale nonlinear deformation of roadway in Liangjia Coal Mine, Shandong Province, mudstone 1602 working face is taken as research object. A high-precision weathering test system integrating monitoring and control was developed, tests expanded were carried out 10 °C, 20 30 °C 40 °C. The results show that hygroscopic curves demonstrate a growth trend different temperatures, influence temperature on less than 20%. From overall law, it can be roughly divided into three stages: strong stage, deceleration stage stable stage. maximum expansion rates samples 4.1%, 5.3%, 6.2% 6.8%, respectively, water content corresponding to ambient humidity generally “concave”. mechanical properties decrease increases, compressive strength decreases by 16~50%. linear degradation obvious, gradual peak strain indicates plasticity rock increases elastic modulus linearly.

Language: Английский

Citations

1
Damage Creep Model and Application for Sandy Mudstone Considering the Effect of Immersion Deterioration DOI Creative Commons
Zhitao Ma, Wenhu Liu, Hanwen Xu

et al.

Journal of Mechanics, Journal Year: 2024, Volume and Issue: 40, P. 325 - 335

Published: Jan. 1, 2024

Abstract Aiming at the problem of performance degradation and large deformation sandy mudstone after immersion in water, compression test is carried out. The damage deterioration law strength elastic modulus immersed rock mass analyzed, function relationship between variable soaking time obtained by fitting. Combined with Hoek-Brown criterion Mohr-Coulomb criterion, calculation method instantaneous cohesion internal friction angle damaged derived based on tangent method, equivalent which can effectively characterize nonlinear characteristics given. Based built-in creep model Cvisc Flac3D, a given introducing factor mass, more suitable for describing mudstone. validity verified comparing measured results.

Language: Английский

Citations

0
Application of clay minerals in the synthesis of Cretaceous mudstones and microstructural analysis of their deterioration mechanism DOI
Shuai Yan, Lijun Han, Lingdong Meng

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 18, 2024

Abstract The Cretaceous mudstone undergoes significant argillization and disintegration when in contact with water due to its high content of clay minerals, posing a severe challenge the stability roadways coal mines during construction operation. This research aimed prepare water-sensitive mudstone–like materials by method mineral composition similar that natural reproduce mechanical hydraulic properties rocks meanwhile reveal deteriorating effect minerals on microstructure macroscopic properties. Using binary clay-gypsum mixtures considering aggregate-binder ratio, iron sand fine sand, powder aggregate as controlling factors, 16 groups proportioning schemes were established using orthogonal test series physic experiments conducted determine Subsequently, sensitivity analysis was applied characterize effects different influencing factors mudstone-like materials' result shows distribution ranges physical, mechanical, parameters newly prepared material overlap noticeably those mudstone, suggesting this new can better meet requirements modeling mudstone. In addition, range showed ratio dominant factor for material's UCS, E, cohesion, while had density time. Then, qualitative quantitative microstructural carried out SEM images four samples based kaolinite-gypsum Avizo software via dynamic threshold segmentation method. indicates microscopic parameters, such pore size distribution, equivalent diameter, porosity, fractal dimension, etc., are significantly altered increase kaolinite content, resulting marked deterioration micromechanical mineralogical change transforms cementation type from homogeneous dense crystalline anisotropic loose argillaceous cementation, exhibiting strong extremely weak macro properties, which explains mechanism mudstones micro point view. Importantly, synthesis mineralogy proposed study may be widely employed rock mechanics engineering.

Language: Английский

Citations

0
Application of clay minerals in the synthesis of cretaceous mudstones and microstructural analysis of their deterioration mechanism DOI Creative Commons
Shuai Yan, Lijun Han, Lingdong Meng

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 27, 2024

The Cretaceous mudstone undergoes significant argillization and disintegration when in contact with water due to its high content of clay minerals, posing a severe challenge the stability roadways coal mines during construction operation. This research aimed prepare water-sensitive mudstone–like materials by method mineral composition similar that natural reproduce mechanical hydraulic properties rocks meanwhile reveal deteriorating effect minerals on microstructure macroscopic properties. Using binary clay-gypsum mixtures considering aggregate-binder ratio, iron sand fine sand, powder aggregate as controlling factors, 16 groups proportioning schemes were established using orthogonal test series physic experiments conducted determine Subsequently, sensitivity analysis was applied characterize effects different influencing factors mudstone-like materials' result shows distribution ranges physical, mechanical, parameters newly prepared material overlap noticeably those mudstone, suggesting this new can better meet requirements modeling mudstone. In addition, range showed ratio dominant factor for material's UCS, E, cohesion, while had density time. Then, qualitative quantitative microstructural carried out SEM images four samples based kaolinite-gypsum Avizo software via dynamic threshold segmentation method. indicates microscopic parameters, such pore size distribution, equivalent diameter, porosity, fractal dimension, etc., are significantly altered increase kaolinite content, resulting marked deterioration micromechanical mineralogical change transforms cementation type from homogeneous dense crystalline anisotropic loose argillaceous cementation, exhibiting strong extremely weak macro properties, which explains mechanism mudstones micro point view. Importantly, synthesis mineralogy proposed study may be widely employed rock mechanics engineering.

Language: Английский

Citations

0