Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete
Subsurface mass concrete infrastructure—including immersed tunnels, dams, and nuclear waste containment systems—frequently faces calcium-leaching risks from prolonged groundwater exposure. An anisotropic stress-leaching damage model incorporating microcrack propagation is developed for underground c...
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MDPI AG
2025-08-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/15/2725 |
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| author | Feng Guo Weijie He Longlong Tu Huiming Hou |
| author_facet | Feng Guo Weijie He Longlong Tu Huiming Hou |
| author_sort | Feng Guo |
| collection | DOAJ |
| description | Subsurface mass concrete infrastructure—including immersed tunnels, dams, and nuclear waste containment systems—frequently faces calcium-leaching risks from prolonged groundwater exposure. An anisotropic stress-leaching damage model incorporating microcrack propagation is developed for underground concrete’s chemo–mechanical coupling. This model investigates stress-induced anisotropy in concrete through the evolution of oriented microcrack networks. The model incorporates nonlinear anisotropic plastic strain from coupled chemical–mechanical damage. Unlike conventional concrete rheology, this model characterizes chemical creep through stress-chemical coupled damage mechanics. The numerical model is incorporated within COMSOL Multiphysics to perform coupled multiphysics simulations. A close match is observed between the numerical predictions and experimental findings. Under high stress loads, calcium leaching and mechanical stress exhibit significant coupling effects. Regarding concrete durability, chemical degradation has a more pronounced effect on concrete’s stiffness and strength reduction compared with stress-generated microcracking. |
| format | Article |
| id | doaj-art-81523f11cd3f437fb5c081f0ba28dda7 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-81523f11cd3f437fb5c081f0ba28dda72025-08-20T03:36:03ZengMDPI AGBuildings2075-53092025-08-011515272510.3390/buildings15152725Numerical Study of Chemo–Mechanical Coupling Behavior of ConcreteFeng Guo0Weijie He1Longlong Tu2Huiming Hou3Foshan Shunde District Agent Construction Project Center, Foshan 528300, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaSubsurface mass concrete infrastructure—including immersed tunnels, dams, and nuclear waste containment systems—frequently faces calcium-leaching risks from prolonged groundwater exposure. An anisotropic stress-leaching damage model incorporating microcrack propagation is developed for underground concrete’s chemo–mechanical coupling. This model investigates stress-induced anisotropy in concrete through the evolution of oriented microcrack networks. The model incorporates nonlinear anisotropic plastic strain from coupled chemical–mechanical damage. Unlike conventional concrete rheology, this model characterizes chemical creep through stress-chemical coupled damage mechanics. The numerical model is incorporated within COMSOL Multiphysics to perform coupled multiphysics simulations. A close match is observed between the numerical predictions and experimental findings. Under high stress loads, calcium leaching and mechanical stress exhibit significant coupling effects. Regarding concrete durability, chemical degradation has a more pronounced effect on concrete’s stiffness and strength reduction compared with stress-generated microcracking.https://www.mdpi.com/2075-5309/15/15/2725anisotropic damagestress-chemical couplingconcretenumerical simulation |
| spellingShingle | Feng Guo Weijie He Longlong Tu Huiming Hou Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete Buildings anisotropic damage stress-chemical coupling concrete numerical simulation |
| title | Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete |
| title_full | Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete |
| title_fullStr | Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete |
| title_full_unstemmed | Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete |
| title_short | Numerical Study of Chemo–Mechanical Coupling Behavior of Concrete |
| title_sort | numerical study of chemo mechanical coupling behavior of concrete |
| topic | anisotropic damage stress-chemical coupling concrete numerical simulation |
| url | https://www.mdpi.com/2075-5309/15/15/2725 |
| work_keys_str_mv | AT fengguo numericalstudyofchemomechanicalcouplingbehaviorofconcrete AT weijiehe numericalstudyofchemomechanicalcouplingbehaviorofconcrete AT longlongtu numericalstudyofchemomechanicalcouplingbehaviorofconcrete AT huiminghou numericalstudyofchemomechanicalcouplingbehaviorofconcrete |