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Title: | Upcycling end-of-life bricks in high-performance one-part alkali-activated materials |
Authors: | Al-Noaimat, YA Chougan, M Al-kheetan, MJ Yio, MHN Wong, HS Ghaffar, SH |
Keywords: | brick aggregate;brick powder;nano-graphite platelets;one-part alkali-activated materials |
Issue Date: | 14-Sep-2023 |
Publisher: | Elsevier |
Citation: | Al-Noaimat, Y.A. et al. (2023) 'Upcycling end-of-life bricks in high-performance one-part alkali-activated materials', Developments in the Built Environment, 16, 100231, pp. 1 - 15. doi: 10.1016/j.dibe.2023.100231. |
Abstract: | Copyright © The Authors 2023. One-part alkali-activated materials (AAMs) can preserve natural resources and lower embodied carbon of the built environment by accommodating various wastes, industrial by-products, and end-of-life materials in their composition. This study investigates the feasibility of using end-of-life bricks in two physical states, powder and aggregate, to partially replace fly ash precursor and natural aggregate in AAMs, respectively. The mechanical characteristics, microstructure, water absorption, freeze-thaw and fire resistance of the modified AAMs were evaluated. The effect of adding different ratios of nano graphite platelets was also investigated. Results showed that brick-based one-part AAMs can achieve mechanical properties, pore structure, water absorption and freeze-thaw resistance comparable to fly ash-based AAM while having 65% better fire resistivity. Incorporating bricks as aggregate resulted in a maximum improvement of 17% and 27% in the AAMs' compressive and flexural strength levels, respectively, and a general enhancement in the freeze-thaw resistance with showing no reduction in compressive strength after exposure to elevated temperature. Incorporating 0.1 wt% nano-graphite further enhanced flexural strength by 30%, decreased water absorption by 18% and improved freeze-thaw resistance compared to the mix without nano-graphite. Moreover, adding up to 0.5% nano-graphite enhanced the fire resistivity of the composite, allowing it to exhibit 19% better strength performance than before exposure. |
Description: | Data availability: Data will be made available on request. |
URI: | https://bura.brunel.ac.uk/handle/2438/27295 |
DOI: | https://doi.org/10.1016/j.dibe.2023.100231 |
Other Identifiers: | ORCID iDs: Mehdi Chougan https://orcid.org/0000-0002-7851-8665; Seyed Hamidreza Ghaffar https://orcid.org/0000-0002-4694-9508. 100231 |
Appears in Collections: | Dept of Civil and Environmental Engineering Research Papers |
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FullText.pdf | Crown Copyright / The Authors © 2023. Published by Elsevier Ltd. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/). | 16.25 MB | Adobe PDF | View/Open |
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