Flexural behavior of two-layer reinforced concrete slab with hollow cores
Flexural behavior of a concrete slab system with an optimal weight-to-strength ratio comprising layered and hollow-core slab structures was investigated using two-layered slabs with hollow cores (LS/HCS). Six slabs with dimensions of 180, 450, and 1600 mm were tested experimentally and numerically u...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2024-02-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/16878132231224940 |
| _version_ | 1797304043342659584 |
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| author | Ahmed S. Eisa Louay A. Aboul-Nour Asmaa El-Ghamry Martina Zeleňáková Dušan Katunský |
| author_facet | Ahmed S. Eisa Louay A. Aboul-Nour Asmaa El-Ghamry Martina Zeleňáková Dušan Katunský |
| author_sort | Ahmed S. Eisa |
| collection | DOAJ |
| description | Flexural behavior of a concrete slab system with an optimal weight-to-strength ratio comprising layered and hollow-core slab structures was investigated using two-layered slabs with hollow cores (LS/HCS). Six slabs with dimensions of 180, 450, and 1600 mm were tested experimentally and numerically using ANSYS software. Each layered slab comprises a 90-mm-thick lightweight concrete bottom layer and a 90-mm-thick high-strength concrete top layer. Three parameters were studied: core diameter (58, 86, and 110 mm), reinforcement ratio (0.37%, 0.53%, 0.95%), and treatment type (bonding agent, nails). Treatment types were analyzed via push-out testing; both nails and agents connected the slabs with sufficient bond strength. A control slab with 86-mm core diameter, shear-span-to-effective-depth ratio of 4, reinforcement ratio of 0.53%, and agent material was used. Concrete, steel bars, and loading support plates were modeled using SOLID65, LINK180, and SOLID185 elements, respectively. Analytical results were validated experimentally. A parametric study analyzed other parameters affecting LS/HCS behavior, including compressive strength, opening numbers, core shape, applied loading type, added top steel reinforcement, slab type, and slab height. Core diameter reduction, increased reinforcement ratios, and using nails enhanced the failure load. The LS/HCS gives an optimum weight-to-strength ratio with a 33.672% reduction compared with solid slabs. |
| first_indexed | 2024-03-08T00:03:38Z |
| format | Article |
| id | doaj.art-09f49bde5f1f4a73b5d248529e618a53 |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-03-08T00:03:38Z |
| publishDate | 2024-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-09f49bde5f1f4a73b5d248529e618a532024-02-17T12:03:19ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402024-02-011610.1177/16878132231224940Flexural behavior of two-layer reinforced concrete slab with hollow coresAhmed S. Eisa0Louay A. Aboul-Nour1Asmaa El-Ghamry2Martina Zeleňáková3Dušan Katunský4Department of Structural Engineering, Zagazig University, Zagazig, EgyptDepartment of Structural Engineering, Zagazig University, Zagazig, EgyptDepartment of Structural Engineering, Zagazig University, Zagazig, EgyptFaculty of Civil Engineering, Technical University of Kosice, Kosice, SlovakiaFaculty of Civil Engineering, Technical University of Kosice, Kosice, SlovakiaFlexural behavior of a concrete slab system with an optimal weight-to-strength ratio comprising layered and hollow-core slab structures was investigated using two-layered slabs with hollow cores (LS/HCS). Six slabs with dimensions of 180, 450, and 1600 mm were tested experimentally and numerically using ANSYS software. Each layered slab comprises a 90-mm-thick lightweight concrete bottom layer and a 90-mm-thick high-strength concrete top layer. Three parameters were studied: core diameter (58, 86, and 110 mm), reinforcement ratio (0.37%, 0.53%, 0.95%), and treatment type (bonding agent, nails). Treatment types were analyzed via push-out testing; both nails and agents connected the slabs with sufficient bond strength. A control slab with 86-mm core diameter, shear-span-to-effective-depth ratio of 4, reinforcement ratio of 0.53%, and agent material was used. Concrete, steel bars, and loading support plates were modeled using SOLID65, LINK180, and SOLID185 elements, respectively. Analytical results were validated experimentally. A parametric study analyzed other parameters affecting LS/HCS behavior, including compressive strength, opening numbers, core shape, applied loading type, added top steel reinforcement, slab type, and slab height. Core diameter reduction, increased reinforcement ratios, and using nails enhanced the failure load. The LS/HCS gives an optimum weight-to-strength ratio with a 33.672% reduction compared with solid slabs.https://doi.org/10.1177/16878132231224940 |
| spellingShingle | Ahmed S. Eisa Louay A. Aboul-Nour Asmaa El-Ghamry Martina Zeleňáková Dušan Katunský Flexural behavior of two-layer reinforced concrete slab with hollow cores Advances in Mechanical Engineering |
| title | Flexural behavior of two-layer reinforced concrete slab with hollow cores |
| title_full | Flexural behavior of two-layer reinforced concrete slab with hollow cores |
| title_fullStr | Flexural behavior of two-layer reinforced concrete slab with hollow cores |
| title_full_unstemmed | Flexural behavior of two-layer reinforced concrete slab with hollow cores |
| title_short | Flexural behavior of two-layer reinforced concrete slab with hollow cores |
| title_sort | flexural behavior of two layer reinforced concrete slab with hollow cores |
| url | https://doi.org/10.1177/16878132231224940 |
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