Development and testing of a sandwich panel with UHPC and PCM concrete layers

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Title: Development and testing of a sandwich panel with UHPC and PCM concrete layers
Authors: Sexton, EoghanWest, RogerKaur, GubirNiall, DervillaO'Hegarty, RichardKinnane, Oliver
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Date: 8-Mar-2019
Online since: 2021-02-25T12:06:21Z
Abstract: Precast concrete sandwich panels provide a thermally efficient alternative to conventional brick and mortar construction and improve the energy efficiency of existing buildings. This project comprised the design and testing of a sample re-cladding panel composed of a phase change material (PCM) in the concrete inner wythe (for thermal efficiency) and a thin ultra-high performance concrete (UHPC) outer wythe, joined compositely using a C-grid shear connector. Six different concrete mixes were prepared and structurally tested in compression and flexure. A concrete sandwich panel was cast using two of the best performing mixes and subsequently tested in three-point bending to investigate its flexural performance. The strongest PCM and UHPC concretes had average compressive and flexural strengths of 25MPa and 5.1MPa, and 121MPa and 9.2MPa respectively. The 900mm span panel tested in flexure reached its serviceability limit at 10kN, with ultimate peak load occurring at 97kN. Post-peak behaviour illustrated the role of the shear connector in allowing composite action to occur.
Funding Details: European Commission Horizon 2020
Type of material: Conference Publication
Publisher: UKIERI
Keywords: PCMSandwich panelsThermal efficiencyUHPC
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Language: en
Status of Item: Peer reviewed
Is part of: K Dhir, R., Bedi, R., Singh, S.P., Goel, S. (eds.) UKIERI Concrete Congress: Concrete: The Global Builder: Working together for durable and sustainable infrastructure
Conference Details: UKIERI Concrete Congress, Jalandhar, India, 5-8 March 2019
ISBN: 978-93-5351-357-3
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Appears in Collections:Architecture, Planning and Environmental Policy Research Collection

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