Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs
This study focuses on rockfall impact damage to roof slabs and tunnel shed slabs and adopts the design principles of bulletproof composite armor to develop energy dissipation buffer structures. Two types of structures were proposed: foam-sandwich reinforced concrete slabs and concrete slabs reinforc...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-12-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525009799 |
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| author | Liang Gao Ziyan Pan Kun Wang Junfa Zhang |
| author_facet | Liang Gao Ziyan Pan Kun Wang Junfa Zhang |
| author_sort | Liang Gao |
| collection | DOAJ |
| description | This study focuses on rockfall impact damage to roof slabs and tunnel shed slabs and adopts the design principles of bulletproof composite armor to develop energy dissipation buffer structures. Two types of structures were proposed: foam-sandwich reinforced concrete slabs and concrete slabs reinforced with carbon fiber cloth and aramid fiber cloth on their back surfaces. Drop hammer impact tests were conducted to evaluate the impact resistance of the slabs. A total of 24 specimens were fabricated, considering factors such as foam slab thickness and the concrete material used in the top slab. The experimental results demonstrated that the rigid outer layer effectively dissipated impact energy into the internal flexible buffer layer, thereby maximizing the energy absorption and cushioning performance of the rigid–flexible composite structure. The energy consumption ratio of all slabs exceeded 97 %, highlighting the sandwich structure’s capability to significantly extend the impact duration of the drop hammer on the reinforced concrete slabs while reducing the average impact force. Furthermore, ceramic tiles on the surface of the foam slab effectively mitigated the direct impact of the drop hammer, enhancing the overall impact resistance of the structure. Fiber reinforcements, particularly carbon fiber cloth, effectively restrained concrete fragments from dispersing, thus improving safety and structural integrity. |
| format | Article |
| id | doaj-art-5ccd311148bf4525b232a9ab11687f37 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-5ccd311148bf4525b232a9ab11687f372025-08-22T04:56:22ZengElsevierCase Studies in Construction Materials2214-50952025-12-0123e0518110.1016/j.cscm.2025.e05181Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabsLiang Gao0Ziyan Pan1Kun Wang2Junfa Zhang3Corresponding author.; School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, ChinaThis study focuses on rockfall impact damage to roof slabs and tunnel shed slabs and adopts the design principles of bulletproof composite armor to develop energy dissipation buffer structures. Two types of structures were proposed: foam-sandwich reinforced concrete slabs and concrete slabs reinforced with carbon fiber cloth and aramid fiber cloth on their back surfaces. Drop hammer impact tests were conducted to evaluate the impact resistance of the slabs. A total of 24 specimens were fabricated, considering factors such as foam slab thickness and the concrete material used in the top slab. The experimental results demonstrated that the rigid outer layer effectively dissipated impact energy into the internal flexible buffer layer, thereby maximizing the energy absorption and cushioning performance of the rigid–flexible composite structure. The energy consumption ratio of all slabs exceeded 97 %, highlighting the sandwich structure’s capability to significantly extend the impact duration of the drop hammer on the reinforced concrete slabs while reducing the average impact force. Furthermore, ceramic tiles on the surface of the foam slab effectively mitigated the direct impact of the drop hammer, enhancing the overall impact resistance of the structure. Fiber reinforcements, particularly carbon fiber cloth, effectively restrained concrete fragments from dispersing, thus improving safety and structural integrity.http://www.sciencedirect.com/science/article/pii/S2214509525009799Rockfall impactFoam-sandwich concrete slabEnergy dissipation buffer performanceDynamic impact testCarbon fiber reinforcement |
| spellingShingle | Liang Gao Ziyan Pan Kun Wang Junfa Zhang Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs Case Studies in Construction Materials Rockfall impact Foam-sandwich concrete slab Energy dissipation buffer performance Dynamic impact test Carbon fiber reinforcement |
| title | Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs |
| title_full | Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs |
| title_fullStr | Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs |
| title_full_unstemmed | Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs |
| title_short | Experimental investigation of energy consumption performance in enhanced foam-concrete sandwich slabs |
| title_sort | experimental investigation of energy consumption performance in enhanced foam concrete sandwich slabs |
| topic | Rockfall impact Foam-sandwich concrete slab Energy dissipation buffer performance Dynamic impact test Carbon fiber reinforcement |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525009799 |
| work_keys_str_mv | AT lianggao experimentalinvestigationofenergyconsumptionperformanceinenhancedfoamconcretesandwichslabs AT ziyanpan experimentalinvestigationofenergyconsumptionperformanceinenhancedfoamconcretesandwichslabs AT kunwang experimentalinvestigationofenergyconsumptionperformanceinenhancedfoamconcretesandwichslabs AT junfazhang experimentalinvestigationofenergyconsumptionperformanceinenhancedfoamconcretesandwichslabs |