Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending
This paper presents an experimental programme and a fire design model on hybrid fibre reinforced high-performance concrete (HPC) columns under ISO 834 heating curve. To date, there are very few experimental works on HPC columns subjected to eccentric loading under fire conditions. Therefore, a total...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/159857 |
| _version_ | 1824456227989487616 |
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| author | Du, Panwei Yang, Yaowen Tan, Kang Hai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Du, Panwei Yang, Yaowen Tan, Kang Hai |
| author_sort | Du, Panwei |
| collection | NTU |
| description | This paper presents an experimental programme and a fire design model on hybrid fibre reinforced high-performance concrete (HPC) columns under ISO 834 heating curve. To date, there are very few experimental works on HPC columns subjected to eccentric loading under fire conditions. Therefore, a total of six specimens are tested to investigate the effects of load eccentricity and slenderness ratio on spalling and structural behaviour of HPC columns. Material properties including compressive strength, residual flexural strength and spalling behaviour under unstressed state but subject to transient heating are presented to get an overview of the performance of HPC. Following that, the test results of column specimens are discussed in terms of temperature distribution, mid-height deflection, axial deformation, failure mode and fire endurance. No spalling is observed in all the specimens owing to the synergistic effect of hybrid polypropylene and steel fibres. Test results show that mid-height deflection and axial contraction increase with an increase of load eccentricity. A simplified fire design model incorporating fibre reinforced concrete design is adopted based on 500 °C isotherm method. The model is verified with test data and it shows that 400 °C isotherm depth could provide safe and accurate predictions for HPC columns. |
| first_indexed | 2025-02-19T03:50:46Z |
| format | Journal Article |
| id | ntu-10356/159857 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:50:46Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1598572022-07-04T08:43:59Z Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending Du, Panwei Yang, Yaowen Tan, Kang Hai School of Civil and Environmental Engineering Engineering::Civil engineering High-Performance Concrete Fibre Reinforced Concrete This paper presents an experimental programme and a fire design model on hybrid fibre reinforced high-performance concrete (HPC) columns under ISO 834 heating curve. To date, there are very few experimental works on HPC columns subjected to eccentric loading under fire conditions. Therefore, a total of six specimens are tested to investigate the effects of load eccentricity and slenderness ratio on spalling and structural behaviour of HPC columns. Material properties including compressive strength, residual flexural strength and spalling behaviour under unstressed state but subject to transient heating are presented to get an overview of the performance of HPC. Following that, the test results of column specimens are discussed in terms of temperature distribution, mid-height deflection, axial deformation, failure mode and fire endurance. No spalling is observed in all the specimens owing to the synergistic effect of hybrid polypropylene and steel fibres. Test results show that mid-height deflection and axial contraction increase with an increase of load eccentricity. A simplified fire design model incorporating fibre reinforced concrete design is adopted based on 500 °C isotherm method. The model is verified with test data and it shows that 400 °C isotherm depth could provide safe and accurate predictions for HPC columns. Ministry of National Development (MND) National Research Foundation (NRF) This material is based on research/work supported by the Singapore Ministry of National Development and National Research Foundation Singapore under L2 NIC Award No. L2NICCFP1-2013-4. 2022-07-04T08:43:59Z 2022-07-04T08:43:59Z 2022 Journal Article Du, P., Yang, Y. & Tan, K. H. (2022). Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending. Engineering Structures, 251, 113425-. https://dx.doi.org/10.1016/j.engstruct.2021.113425 0141-0296 https://hdl.handle.net/10356/159857 10.1016/j.engstruct.2021.113425 2-s2.0-85119096017 251 113425 en L2NICCFP1-2013-4 Engineering Structures © 2021 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering High-Performance Concrete Fibre Reinforced Concrete Du, Panwei Yang, Yaowen Tan, Kang Hai Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending |
| title | Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending |
| title_full | Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending |
| title_fullStr | Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending |
| title_full_unstemmed | Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending |
| title_short | Fire behaviour and design of hybrid fibre reinforced high-performance concrete columns subjected to uniaxial bending |
| title_sort | fire behaviour and design of hybrid fibre reinforced high performance concrete columns subjected to uniaxial bending |
| topic | Engineering::Civil engineering High-Performance Concrete Fibre Reinforced Concrete |
| url | https://hdl.handle.net/10356/159857 |
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