Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material
The compression and energy absorption properties of foam geopolymers increase stress wave attenuation under explosion impacts, reducing the vibration effect on the structure. Explosion tests were conducted using several composite structure models, including a concrete lining structure (CLS) without...
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221491472400196X |
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| author | Hang Zhou Hujun Li Zhen Wang Dongming Yan Wenxin Wang Guokai Zhang Zirui Cheng Song Sun Mingyang Wang |
| author_facet | Hang Zhou Hujun Li Zhen Wang Dongming Yan Wenxin Wang Guokai Zhang Zirui Cheng Song Sun Mingyang Wang |
| author_sort | Hang Zhou |
| collection | DOAJ |
| description | The compression and energy absorption properties of foam geopolymers increase stress wave attenuation under explosion impacts, reducing the vibration effect on the structure. Explosion tests were conducted using several composite structure models, including a concrete lining structure (CLS) without foam geopolymer and six foam geopolymer composite structures (FGCS) with different backfill parameters, to study the dynamic response and wave dissipation mechanisms of FGCS under explosive loading. Pressure, strain, and vibration responses at different locations were synchronously tested. The damage modes and dynamic responses of different models were compared, and how wave elimination and energy absorption efficiencies were affected by foam geopolymer backfill parameters was analyzed. The results showed that the foam geopolymer absorbed and dissipated the impact energy through continuous compressive deformation under high strain rates and dynamic loading, reducing the strain in the liner structure by 52% and increasing the pressure attenuation rate by 28%. Additionally, the foam geopolymer backfill reduced structural vibration and liner deformation, with the FGCS structure showing 35% less displacement and 70% less acceleration compared to the CLS. The FGCS model with thicker, less dense foam geopolymer backfill, having more pores and higher porosity, demonstrated better compression and energy absorption under dynamic impact, increasing stress wave attenuation efficiency. By analyzing the stress wave propagation and the compression characteristics of the porous medium, it was concluded that the stress transfer ratio of FGCS-ρ-579 was 77% lower than that of CLS, and the transmitted wave energy was 90% lower. The results of this study provide a scientific basis for optimizing underground composite structure interlayer parameters. |
| format | Article |
| id | doaj-art-9fd0fe7941d9451792d83c383527495b |
| institution | Kabale University |
| issn | 2214-9147 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj-art-9fd0fe7941d9451792d83c383527495b2025-01-23T05:26:48ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-01-0143304318Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill materialHang Zhou0Hujun Li1Zhen Wang2Dongming Yan3Wenxin Wang4Guokai Zhang5Zirui Cheng6Song Sun7Mingyang Wang8School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Corresponding author.College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaSchool of Safety Science and Engineering (School of Emergency Management), Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Safety Science and Engineering (School of Emergency Management), Nanjing University of Science and Technology, Nanjing 210094, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210014, ChinaState Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210014, ChinaThe compression and energy absorption properties of foam geopolymers increase stress wave attenuation under explosion impacts, reducing the vibration effect on the structure. Explosion tests were conducted using several composite structure models, including a concrete lining structure (CLS) without foam geopolymer and six foam geopolymer composite structures (FGCS) with different backfill parameters, to study the dynamic response and wave dissipation mechanisms of FGCS under explosive loading. Pressure, strain, and vibration responses at different locations were synchronously tested. The damage modes and dynamic responses of different models were compared, and how wave elimination and energy absorption efficiencies were affected by foam geopolymer backfill parameters was analyzed. The results showed that the foam geopolymer absorbed and dissipated the impact energy through continuous compressive deformation under high strain rates and dynamic loading, reducing the strain in the liner structure by 52% and increasing the pressure attenuation rate by 28%. Additionally, the foam geopolymer backfill reduced structural vibration and liner deformation, with the FGCS structure showing 35% less displacement and 70% less acceleration compared to the CLS. The FGCS model with thicker, less dense foam geopolymer backfill, having more pores and higher porosity, demonstrated better compression and energy absorption under dynamic impact, increasing stress wave attenuation efficiency. By analyzing the stress wave propagation and the compression characteristics of the porous medium, it was concluded that the stress transfer ratio of FGCS-ρ-579 was 77% lower than that of CLS, and the transmitted wave energy was 90% lower. The results of this study provide a scientific basis for optimizing underground composite structure interlayer parameters.http://www.sciencedirect.com/science/article/pii/S221491472400196XExplosion loadComposite structureGeopolymer foamEnergy absorption |
| spellingShingle | Hang Zhou Hujun Li Zhen Wang Dongming Yan Wenxin Wang Guokai Zhang Zirui Cheng Song Sun Mingyang Wang Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material Defence Technology Explosion load Composite structure Geopolymer foam Energy absorption |
| title | Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material |
| title_full | Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material |
| title_fullStr | Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material |
| title_full_unstemmed | Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material |
| title_short | Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material |
| title_sort | experimental investigation on the anti detonation performance of composite structure containing foam geopolymer backfill material |
| topic | Explosion load Composite structure Geopolymer foam Energy absorption |
| url | http://www.sciencedirect.com/science/article/pii/S221491472400196X |
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