FRP Stay-in-Place Formworks for High Performance of Concrete Slabs
Stay-in-Place (SiP) formworks obviate the transportation, placement, removal and storage requirements of conventional formworks. Fibre Reinforced Polymer SiPs (FRP-SiP) have additional advantages, such as corrosion resistance, high specific strength and durability. This paper discusses an experiment...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/6/10/313 |
| _version_ | 1797472485006901248 |
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| author | Reema Goyal Subhra Majhi Abhijit Mukherjee Shweta Goyal |
| author_facet | Reema Goyal Subhra Majhi Abhijit Mukherjee Shweta Goyal |
| author_sort | Reema Goyal |
| collection | DOAJ |
| description | Stay-in-Place (SiP) formworks obviate the transportation, placement, removal and storage requirements of conventional formworks. Fibre Reinforced Polymer SiPs (FRP-SiP) have additional advantages, such as corrosion resistance, high specific strength and durability. This paper discusses an experimental instigation consisting of two sets of slabs having varying span-to-depth ratios cast on an FRP-SiP. Control specimens with conventional steel bar reinforcements were also cast. Several treatments for improving interfacial bonds at the interface between concrete and FRP-SiP have been investigated. Cyclic flexural tests were performed to evaluate their structural performance. Load-displacement relationship and load capacity are presented. Failure envelopes and energy absorption capacity were evaluated. It was found that the load capacity of FRP-SiP was around 107% greater than the conventional steel rebar specimens. Bond treatment on the FRP-SiP specimens increased the load capacity by around 215% over the untreated specimens. The load-deflection behaviour and the failure modes of the FRP-SiP specimens were distinctly different from those of the conventional specimens. The flexure and shear provisions in American Concrete Institute Standards (ACI 440) were found to be conservative in comparison to the present results. This study demonstrates that FRP-SiPs improve both the structural performance and construction efficiency of concrete slabs, however, new standards would be necessary to be able to utilize their improved capacity. |
| first_indexed | 2024-03-09T20:03:24Z |
| format | Article |
| id | doaj.art-efe39ef2febc4e019fb47f863f25042c |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T20:03:24Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-efe39ef2febc4e019fb47f863f25042c2023-11-24T00:41:17ZengMDPI AGJournal of Composites Science2504-477X2022-10-0161031310.3390/jcs6100313FRP Stay-in-Place Formworks for High Performance of Concrete SlabsReema Goyal0Subhra Majhi1Abhijit Mukherjee2Shweta Goyal3Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala 147004, IndiaSchool of Civil and Mechanical Engineering, Curtin University, Bentley, WA 6102, AustraliaSchool of Civil and Mechanical Engineering, Curtin University, Bentley, WA 6102, AustraliaDepartment of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala 147004, IndiaStay-in-Place (SiP) formworks obviate the transportation, placement, removal and storage requirements of conventional formworks. Fibre Reinforced Polymer SiPs (FRP-SiP) have additional advantages, such as corrosion resistance, high specific strength and durability. This paper discusses an experimental instigation consisting of two sets of slabs having varying span-to-depth ratios cast on an FRP-SiP. Control specimens with conventional steel bar reinforcements were also cast. Several treatments for improving interfacial bonds at the interface between concrete and FRP-SiP have been investigated. Cyclic flexural tests were performed to evaluate their structural performance. Load-displacement relationship and load capacity are presented. Failure envelopes and energy absorption capacity were evaluated. It was found that the load capacity of FRP-SiP was around 107% greater than the conventional steel rebar specimens. Bond treatment on the FRP-SiP specimens increased the load capacity by around 215% over the untreated specimens. The load-deflection behaviour and the failure modes of the FRP-SiP specimens were distinctly different from those of the conventional specimens. The flexure and shear provisions in American Concrete Institute Standards (ACI 440) were found to be conservative in comparison to the present results. This study demonstrates that FRP-SiPs improve both the structural performance and construction efficiency of concrete slabs, however, new standards would be necessary to be able to utilize their improved capacity.https://www.mdpi.com/2504-477X/6/10/313glass fibre reinforced polymerstay-in-place formworkconcrete slabsbond treatmentstructural performanceload capacity |
| spellingShingle | Reema Goyal Subhra Majhi Abhijit Mukherjee Shweta Goyal FRP Stay-in-Place Formworks for High Performance of Concrete Slabs Journal of Composites Science glass fibre reinforced polymer stay-in-place formwork concrete slabs bond treatment structural performance load capacity |
| title | FRP Stay-in-Place Formworks for High Performance of Concrete Slabs |
| title_full | FRP Stay-in-Place Formworks for High Performance of Concrete Slabs |
| title_fullStr | FRP Stay-in-Place Formworks for High Performance of Concrete Slabs |
| title_full_unstemmed | FRP Stay-in-Place Formworks for High Performance of Concrete Slabs |
| title_short | FRP Stay-in-Place Formworks for High Performance of Concrete Slabs |
| title_sort | frp stay in place formworks for high performance of concrete slabs |
| topic | glass fibre reinforced polymer stay-in-place formwork concrete slabs bond treatment structural performance load capacity |
| url | https://www.mdpi.com/2504-477X/6/10/313 |
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