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Article | Civil and Sustainable Urban Engineering | Volume 4 - Issue 1 - 2024 | 1-19 | https://doi.org/10.53623/csue.v4i1.391
© 2024 by the author(s), and is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License Creative Commons Attribution 4.0 International (CC BY 4.0) License

Behaviour of Reinforced Concrete Slabs with Embedded Polystyrene Spheres

Author(s): Jen Hua Ling , Ji Wei Lau , Yong Tat Lim
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Centre for Research of Innovation & Sustainable Development, School of Engineering and Technology, University of Technology Sarawak, 96000 Sibu, Sarawak, Malaysia

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Civil and Sustainable Urban Engineering

Volume 4 - Issue 1 - 2024

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Polystyrene spheres can be used to substitute concrete in reinforced concrete slabs. Despite the weight, the structural performance of the slab would also be affected. This study investigated the behaviour of slabs containing polystyrene spheres under loads. Six specimens were fabricated and tested under the four-point load setup. The parameters studied included the diameters of the polystyrene spheres and the spacing between them. The polystyrene spheres reduced the slabs’ first crack load, stiffness, yield strength, and ultimate strength. The first crack, yield, and ultimate loads decreased by 22.3%, 2.1%, and 4.1%, respectively, when the polystyrene sphere’s diameter increased from 75 mm to 125 mm. As the polystyrene spheres’ spacing decreased from 50 mm to 10 mm, the first crack, yield, and ultimate loads dropped 14.2%, 9.2%, and 7%, respectively. Despite some limitations identified during the feasibility analysis, specimen SP3 was found feasible as a simply supported one-way spanning slab. In the specimen, the polystyrene spheres were 0.625 times the slab thickness in diameter and 2.5 times the concrete cover in spacing.

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SUBMITTED: 01 January 2024
ACCEPTED: 10 February 2024
PUBLISHED: 19 February 2024
SUBMITTED to ACCEPTED: 41 days
DOI: https://doi.org/10.53623/csue.v4i1.391

Cite this article
Ling, J. H., Lau, J. W., & Lim, Y. T. (2024). Behaviour of Reinforced Concrete Slabs with Embedded Polystyrene Spheres. Civil and Sustainable Urban Engineering, 4(1), 1–19. https://doi.org/10.53623/csue.v4i1.391
Keywords
Reinforced concrete slab polystyrene spheres flexural behaviour four-point load test concrete replacement
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