Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire
In order to provide a good solution for the treatment and utilization of construction waste, especially waste concrete and to promote the development of green construction to some extent, in this paper, a new composite shear wall filled with demolished concrete lumps (DCLs) and self-compacting concr...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/9/1308 |
| _version_ | 1797490381254819840 |
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| author | Yan Xiong Aodong Chen Di Wu Guowei Zhao |
| author_facet | Yan Xiong Aodong Chen Di Wu Guowei Zhao |
| author_sort | Yan Xiong |
| collection | DOAJ |
| description | In order to provide a good solution for the treatment and utilization of construction waste, especially waste concrete and to promote the development of green construction to some extent, in this paper, a new composite shear wall filled with demolished concrete lumps (DCLs) and self-compacting concrete (SCC) was proposed, and its seismic performance after fire was investigated. Based on quasi-static tests of four composite shear walls filled with DCLs and SCC, three after a standard fire and one contrastive specimen without fire, the effects of fire exposure time, fire-retardant coating on the edge constraint steel pipe column, and the width-thickness ratio on seismic performance of composite shear walls after fire were studied. The failure patterns, bearing capacity, hysteretic loops, ductility, skeleton curves, rigidity degradation curves, and energy dissipation of shear walls were analyzed and compared. Test results indicate that the bearing capacity of the shear wall after 60 min of standard fire is slightly lower than the contrastive specimen without fire, but specimens still have good seismic performance. The interlayer displacement angle of the shear wall after a fire still meets the requirement of regulations. The fire-retardant coating on the edge of concealed steel pipe column has a limited effect on the seismic performance of specimens after a fire. The horizontal bearing capacity and energy dissipation capacity of shear walls after a fire can obviously be improved by properly increasing the width-thickness ratio. |
| first_indexed | 2024-03-10T00:32:11Z |
| format | Article |
| id | doaj.art-1bbf7527cb0149d796c043de18268d2b |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T00:32:11Z |
| publishDate | 2022-08-01 |
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| series | Buildings |
| spelling | doaj.art-1bbf7527cb0149d796c043de18268d2b2023-11-23T15:22:22ZengMDPI AGBuildings2075-53092022-08-01129130810.3390/buildings12091308Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after FireYan Xiong0Aodong Chen1Di Wu2Guowei Zhao3State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, ChinaState Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, ChinaEngineering Research & Test Center, Guangzhou University, Guangzhou 510405, ChinaGuangdong Chuangcheng Construction Supervision and Consulting Limited Liability Company, Guangzhou 510075, ChinaIn order to provide a good solution for the treatment and utilization of construction waste, especially waste concrete and to promote the development of green construction to some extent, in this paper, a new composite shear wall filled with demolished concrete lumps (DCLs) and self-compacting concrete (SCC) was proposed, and its seismic performance after fire was investigated. Based on quasi-static tests of four composite shear walls filled with DCLs and SCC, three after a standard fire and one contrastive specimen without fire, the effects of fire exposure time, fire-retardant coating on the edge constraint steel pipe column, and the width-thickness ratio on seismic performance of composite shear walls after fire were studied. The failure patterns, bearing capacity, hysteretic loops, ductility, skeleton curves, rigidity degradation curves, and energy dissipation of shear walls were analyzed and compared. Test results indicate that the bearing capacity of the shear wall after 60 min of standard fire is slightly lower than the contrastive specimen without fire, but specimens still have good seismic performance. The interlayer displacement angle of the shear wall after a fire still meets the requirement of regulations. The fire-retardant coating on the edge of concealed steel pipe column has a limited effect on the seismic performance of specimens after a fire. The horizontal bearing capacity and energy dissipation capacity of shear walls after a fire can obviously be improved by properly increasing the width-thickness ratio.https://www.mdpi.com/2075-5309/12/9/1308composite shear walldemolished concrete lumpsfirequasi-static testseismic performance |
| spellingShingle | Yan Xiong Aodong Chen Di Wu Guowei Zhao Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire Buildings composite shear wall demolished concrete lumps fire quasi-static test seismic performance |
| title | Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire |
| title_full | Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire |
| title_fullStr | Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire |
| title_full_unstemmed | Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire |
| title_short | Seismic Performance of Composite Shear Walls Filled with Demolished Concrete Lumps and Self-Compacting Concrete after Fire |
| title_sort | seismic performance of composite shear walls filled with demolished concrete lumps and self compacting concrete after fire |
| topic | composite shear wall demolished concrete lumps fire quasi-static test seismic performance |
| url | https://www.mdpi.com/2075-5309/12/9/1308 |
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