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Steel-Concrete Composite Beams with Precast Hollow-Core Slabs: A Sustainable Solution

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  • Felipe Piana Vendramell Ferreira

    (Department of Civil Engineering, Federal University of São Carlos, 13565-905 São Carlos, São Paulo, Brazil)

  • Konstantinos Daniel Tsavdaridis

    (School of Civil Engineering, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds LS2 9JT, UK)

  • Carlos Humberto Martins

    (Department of Civil Engineering, State University of Maringá, 87020-900 Maringá, Paraná, Brazil)

  • Silvana De Nardin

    (Department of Civil Engineering, Federal University of São Carlos, 13565-905 São Carlos, São Paulo, Brazil)

Abstract

Industrialization of construction makes building operation more environmental friendly and sustainable. This change is necessary as it is an industry that demands large consumption of water and energy, as well as being responsible for the disposal of a high volume of waste. However, the transformation of the construction sector is a big challenge worldwide. It is also well known that the largest proportion of the material used in multistory buildings, and thus its carbon impact, is attributed to their slabs being the main contributor of weight. Steel-Concrete composite beams with precast hollow-core slabs (PCHCSs) were developed due to their technical and economic benefits, owing to their high strength and concrete self-weight reduction, making this system economical and with lower environmental footprint, thus reducing carbon emissions. Significant research has been carried out on deep hollow-core slabs due to the need to overcome larger spans that resist high loads. The publication SCI P401, in accordance with Eurocode 4, is however limited to hollow-core slabs with depths from 150 to 250 mm, with or without a concrete topping. This paper aims to investigate hollow-core slabs with a concrete topping to understand their effect on the flexural behavior of Steel-Concrete composite beams, considering the hollow-core-slab depth is greater than the SCI P401 recommendation. Consequently, 150 mm and 265 mm hollow-core units with a concrete topping were considered to assess the increase of the hollow core unit depth. A comprehensive computational parametric study was conducted by varying the in situ infill concrete strength, the transverse reinforcement rate, the shear connector spacing, and the cross-section of steel. Both full and partial interaction models were examined, and in some cases similar resistances were obtained, meaning that the same strength can be obtained for a smaller number of shear studs, i.e., less energy consumption, thus a reduction in the embodied energy. The calculation procedure, according to Eurocode 4 was in favor of safety for the partial-interaction hypothesis.

Suggested Citation

  • Felipe Piana Vendramell Ferreira & Konstantinos Daniel Tsavdaridis & Carlos Humberto Martins & Silvana De Nardin, 2021. "Steel-Concrete Composite Beams with Precast Hollow-Core Slabs: A Sustainable Solution," Sustainability, MDPI, vol. 13(8), pages 1-25, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:8:p:4230-:d:533800
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    References listed on IDEAS

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    1. Alex H. Whitworth & Konstantinos Daniel Tsavdaridis, 2020. "Genetic Algorithm for Embodied Energy Optimisation of Steel-Concrete Composite Beams," Sustainability, MDPI, vol. 12(8), pages 1-17, April.
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