Shear behavior of the interface between asphalt concrete core and transition under seepage effect
Abstract Asphalt concrete core rockfill dam utilizes an asphalt concrete core as anti-seepage structure. Uneven deformation could produce at core wall-transition interface due to differences in material stiffness, potentially leading to crack formation in the core wall. Shear behavior of the interfa...
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-07632-z |
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| author | Lifeng Wen Jialuo Huang Yu Yang |
| author_facet | Lifeng Wen Jialuo Huang Yu Yang |
| author_sort | Lifeng Wen |
| collection | DOAJ |
| description | Abstract Asphalt concrete core rockfill dam utilizes an asphalt concrete core as anti-seepage structure. Uneven deformation could produce at core wall-transition interface due to differences in material stiffness, potentially leading to crack formation in the core wall. Shear behavior of the interface is more complex under seepage effect. This study investigates the shear behavior of the asphalt concrete core-transition material interface under seepage effects. Shear tests were conducted across five seepage pressure, three shear rates, and five normal stress levels. A nuclear magnetic resonance system was employed to analyze internal pore distribution in the asphalt concrete core within shear-affected region. Additionally, high-pressure permeability tests were conducted to explore the effects of shear action on asphalt concrete core permeability. Findings revealed that the interface exhibited a shear hardening phenomenon, with normal displacement rising in response to increased seepage pressure, while the internal friction angle and cohesive strength diminished. The observed damage patterns primarily involved particle embedding, aggregate cracking, and surface cracking, with damage severity increasing with both normal stress and seepage pressure. Despite shear action leading to increased porosity, the asphalt concrete core remained compliant with porosity control standards. |
| format | Article |
| id | doaj-art-3a960b94bbed46b2af54c48fc1893bfd |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-3a960b94bbed46b2af54c48fc1893bfd2025-08-20T03:03:42ZengNature PortfolioScientific Reports2045-23222025-07-0115111810.1038/s41598-025-07632-zShear behavior of the interface between asphalt concrete core and transition under seepage effectLifeng Wen0Jialuo Huang1Yu Yang2State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of TechnologyState Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of TechnologyState Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Xi’an University of TechnologyAbstract Asphalt concrete core rockfill dam utilizes an asphalt concrete core as anti-seepage structure. Uneven deformation could produce at core wall-transition interface due to differences in material stiffness, potentially leading to crack formation in the core wall. Shear behavior of the interface is more complex under seepage effect. This study investigates the shear behavior of the asphalt concrete core-transition material interface under seepage effects. Shear tests were conducted across five seepage pressure, three shear rates, and five normal stress levels. A nuclear magnetic resonance system was employed to analyze internal pore distribution in the asphalt concrete core within shear-affected region. Additionally, high-pressure permeability tests were conducted to explore the effects of shear action on asphalt concrete core permeability. Findings revealed that the interface exhibited a shear hardening phenomenon, with normal displacement rising in response to increased seepage pressure, while the internal friction angle and cohesive strength diminished. The observed damage patterns primarily involved particle embedding, aggregate cracking, and surface cracking, with damage severity increasing with both normal stress and seepage pressure. Despite shear action leading to increased porosity, the asphalt concrete core remained compliant with porosity control standards.https://doi.org/10.1038/s41598-025-07632-zAsphalt concrete coreTransition materialInterfaceShear behaviorSeepage effect |
| spellingShingle | Lifeng Wen Jialuo Huang Yu Yang Shear behavior of the interface between asphalt concrete core and transition under seepage effect Scientific Reports Asphalt concrete core Transition material Interface Shear behavior Seepage effect |
| title | Shear behavior of the interface between asphalt concrete core and transition under seepage effect |
| title_full | Shear behavior of the interface between asphalt concrete core and transition under seepage effect |
| title_fullStr | Shear behavior of the interface between asphalt concrete core and transition under seepage effect |
| title_full_unstemmed | Shear behavior of the interface between asphalt concrete core and transition under seepage effect |
| title_short | Shear behavior of the interface between asphalt concrete core and transition under seepage effect |
| title_sort | shear behavior of the interface between asphalt concrete core and transition under seepage effect |
| topic | Asphalt concrete core Transition material Interface Shear behavior Seepage effect |
| url | https://doi.org/10.1038/s41598-025-07632-z |
| work_keys_str_mv | AT lifengwen shearbehavioroftheinterfacebetweenasphaltconcretecoreandtransitionunderseepageeffect AT jialuohuang shearbehavioroftheinterfacebetweenasphaltconcretecoreandtransitionunderseepageeffect AT yuyang shearbehavioroftheinterfacebetweenasphaltconcretecoreandtransitionunderseepageeffect |