Structural Performance of Shear Loaded Precast EPS-Foam Concrete Half-Shaped Slabs
Date
2020-11-20
Authors
Saheed, Sanusi
Aziz, Farah N. A. Abd.
Amran, Mugahed
Vatin, Nikolai
Fediuk, Roman
Ozbakkaloglu, Togay
Murali, Gunasekaran
Mosaberpanah, Mohammad Ali
Journal Title
Journal ISSN
Volume Title
Publisher
Multidisciplinary Digital Publishing Institute
Abstract
Precast concrete elements provide a feasible way to expedite on-site construction; however, typical precast components are massive, making their use particularly undesirable at construction sites that suffer from low load-bearing capacity or have swelling soils. This research aims to develop an optimal lightweight expanded polystyrene foam concrete (EPS-foam concrete) slab through a consideration of various parameters. The precast EPS-foam concrete half-shaped slabs were prepared with a density and compressive strength of 1980 kg/m3 and 35 MPa, respectively. Quarry dust (QD) and EPS beads were utilized as substitutions for fine and coarse aggregates with replacement-levels that varied from 5% to 22.5% and 15% to 30%, respectively. The use of EPS beads revealed sufficient early age strength; at the same time, the utilization of quarry dust in EPS-foam concrete led to a more than 30% increase in compressive strength compared to the EPS-based mixtures. Two hundred and fifty-six trial mixes were produced to examine the physical and mechanical characteristics of EPS-foam concrete. Three batches of a total of four EPS-foam concrete half-shaped slabs with spans of 3.5 and 4.5 m and thicknesses of 200 and 250 mm were prepared. Findings showed that the ultimate shear forces for the full-scale EPS-foam concrete half-shaped slabs were approximately 6–12% lower than those of the identical concrete samples with a 2410 kg/m3 average density, and 26–32% higher than the theoretical predictions. Also, it was observed that the self-weight of EPS-foam concrete was reduced by up to 20% compared to the control mixtures. Findings revealed that the prepared precast EPS-foam concrete half-shaped slabs could possibly be applied as flooring elements in today’s modern infrastructure.
Description
Keywords
precast concrete, lightweight concrete, expanded polystyrene beads, full-scale EPS-foam concrete half-shaped slab, shear loads, Ingram School of Engineering
Citation
Saheed, S., Aziz, F. N. A. A., Amran, M., Vatin, N., Fediuk, R., Ozbakkaloglu, T., Murali, G., & Mosaberpanah, M. A. (2020). Structural performance of shear loaded precast EPS-foam concrete half-shaped slabs. Sustainability, 12(22), 9679.
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© 2020 The Authors.
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This work is licensed under a Creative Commons Attribution 4.0 International License.