Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling
Spalling is a typical tensile fracture phenomenon due to insufficient tensile strength of concrete. Concrete structure might experience severe spall damage at the rear surface of the structure owing to reflected tensile stress wave induced by impulsive load. In recent years, metaconcrete consisting...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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WORLD SCIENTIFIC PUBL CO PTE LTD
2021
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| Online Access: | http://purl.org/au-research/grants/arc/FL180100196 http://hdl.handle.net/20.500.11937/91543 |
| _version_ | 1848765543355514880 |
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| author | Jin, H. Hao, Hong Chen, Wensu Xu, Cheng |
| author_facet | Jin, H. Hao, Hong Chen, Wensu Xu, Cheng |
| author_sort | Jin, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Spalling is a typical tensile fracture phenomenon due to insufficient tensile strength of concrete. Concrete structure might experience severe spall damage at the rear surface of the structure owing to reflected tensile stress wave induced by impulsive load. In recent years, metaconcrete consisting of engineered aggregates has attracted attentions as metaconcrete exhibits extraordinary wave-filtering characteristics. Metaconcrete can be used to attenuate stress wave generated by impulsive load and hence possibly mitigate the spall damage. In this study, engineered aggregate is designed via the software COMSOL to have the frequency bandgap coincide with the dominant frequency band of stress wave propagating in the normal concrete (NC) specimen to reduce the stress wave propagation and hence spall damage. The wave propagation behaviors in metaconcrete specimen with periodically distributed engineered aggregates have been investigated in a previous study. This study establishes 3D meso-scale model of metaconcrete including mortar, randomly distributed natural aggregates and engineered aggregates to simulate spall behaviors of metaconcrete via the software LS-DYNA. The responses of metaconcrete composed of engineered aggregates with single bandgap and multiple bandgaps are studied. The results show that stress wave can be more effectively attenuated by using engineered aggregates with multiple bandgaps. It is found that although engineered aggregates mitigate stress wave propagation, the soft coating of the engineered aggregates reduces the concrete material strength, therefore spall damage of metaconcrete specimen is not necessarily less severe than the normal concrete, but has different damage mode. In addition, the influences of loading intensity and duration on stress wave, as well as the spall behaviors of metaconcrete specimen are also studied. |
| first_indexed | 2025-11-14T11:36:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-91543 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:36:55Z |
| publishDate | 2021 |
| publisher | WORLD SCIENTIFIC PUBL CO PTE LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-915432023-05-17T04:37:59Z Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling Jin, H. Hao, Hong Chen, Wensu Xu, Cheng Science & Technology Technology Engineering, Civil Engineering, Mechanical Mechanics Engineering Metaconcrete spall test meso-scale model impulsive load HIGH-STRAIN RATE TENSILE-STRENGTH MECHANICAL-PROPERTIES NUMERICAL-ANALYSIS CEMENT PASTE CONCRETE AGGREGATE ATTENUATION DAMAGE Spalling is a typical tensile fracture phenomenon due to insufficient tensile strength of concrete. Concrete structure might experience severe spall damage at the rear surface of the structure owing to reflected tensile stress wave induced by impulsive load. In recent years, metaconcrete consisting of engineered aggregates has attracted attentions as metaconcrete exhibits extraordinary wave-filtering characteristics. Metaconcrete can be used to attenuate stress wave generated by impulsive load and hence possibly mitigate the spall damage. In this study, engineered aggregate is designed via the software COMSOL to have the frequency bandgap coincide with the dominant frequency band of stress wave propagating in the normal concrete (NC) specimen to reduce the stress wave propagation and hence spall damage. The wave propagation behaviors in metaconcrete specimen with periodically distributed engineered aggregates have been investigated in a previous study. This study establishes 3D meso-scale model of metaconcrete including mortar, randomly distributed natural aggregates and engineered aggregates to simulate spall behaviors of metaconcrete via the software LS-DYNA. The responses of metaconcrete composed of engineered aggregates with single bandgap and multiple bandgaps are studied. The results show that stress wave can be more effectively attenuated by using engineered aggregates with multiple bandgaps. It is found that although engineered aggregates mitigate stress wave propagation, the soft coating of the engineered aggregates reduces the concrete material strength, therefore spall damage of metaconcrete specimen is not necessarily less severe than the normal concrete, but has different damage mode. In addition, the influences of loading intensity and duration on stress wave, as well as the spall behaviors of metaconcrete specimen are also studied. 2021 Journal Article http://hdl.handle.net/20.500.11937/91543 10.1142/S0219455421501212 English http://purl.org/au-research/grants/arc/FL180100196 WORLD SCIENTIFIC PUBL CO PTE LTD fulltext |
| spellingShingle | Science & Technology Technology Engineering, Civil Engineering, Mechanical Mechanics Engineering Metaconcrete spall test meso-scale model impulsive load HIGH-STRAIN RATE TENSILE-STRENGTH MECHANICAL-PROPERTIES NUMERICAL-ANALYSIS CEMENT PASTE CONCRETE AGGREGATE ATTENUATION DAMAGE Jin, H. Hao, Hong Chen, Wensu Xu, Cheng Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling |
| title | Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling |
| title_full | Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling |
| title_fullStr | Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling |
| title_full_unstemmed | Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling |
| title_short | Spall Behaviors of Metaconcrete: 3D Meso-Scale Modelling |
| title_sort | spall behaviors of metaconcrete: 3d meso-scale modelling |
| topic | Science & Technology Technology Engineering, Civil Engineering, Mechanical Mechanics Engineering Metaconcrete spall test meso-scale model impulsive load HIGH-STRAIN RATE TENSILE-STRENGTH MECHANICAL-PROPERTIES NUMERICAL-ANALYSIS CEMENT PASTE CONCRETE AGGREGATE ATTENUATION DAMAGE |
| url | http://purl.org/au-research/grants/arc/FL180100196 http://hdl.handle.net/20.500.11937/91543 |