Development of sustainable HPC using rubber powder and waste wire: carbon footprint analysis, mechanical and microstructural properties

Mostafaei, H; Kelishadi, M; Bahmani, H; Wu, C; Ghiassi, B

Development of sustainable HPC using rubber powder and waste wire: carbon footprint analysis, mechanical and microstructural properties

Mostafaei, H

Kelishadi, M Bahmani, H Wu, C

Ghiassi, B

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Publisher:: Taylor & Francis
Publication Type:: Journal Article
Citation:: European Journal of Environmental and Civil Engineering, 2025, 29, (2), pp. 399-420
Issue Date:: 2025-01-01

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Field	Value	Language
dc.contributor.author	Mostafaei, H https://orcid.org/0000-0002-0364-4552
dc.contributor.author	Kelishadi, M
dc.contributor.author	Bahmani, H
dc.contributor.author	Wu, C https://orcid.org/0000-0001-8907-8493
dc.contributor.author	Ghiassi, B
dc.date.accessioned	2025-01-30T05:01:52Z
dc.date.available	2025-01-30T05:01:52Z
dc.date.issued	2025-01-01
dc.identifier.citation	European Journal of Environmental and Civil Engineering, 2025, 29, (2), pp. 399-420
dc.identifier.issn	1964-8189
dc.identifier.issn	2116-7214
dc.identifier.uri	http://hdl.handle.net/10453/184638
dc.description.abstract	This research advances the development of eco-friendly high-performance concrete (HPC) by integrating tire rubber powder and waste wire, focusing on both enhanced mechanical properties and reduced environmental impact. Substituting up to 40% of silica sand with rubber powder helps maintain the compressive strength necessary for high-strength concrete applications. The addition of waste wire is designed to improve ductility. A comprehensive evaluation includes mechanical and microstructural analyses, such as compressive, splitting tensile, and flexural strength assessments, in addition to Scanning Electron Microscopy (SEM) and Differential Thermal Analysis (DTA). Environmental implications are assessed by measuring the embodied carbon footprint. Findings indicate that the absence of rubber powder allows for a compressive strength peak of 95 MPa, while 50% rubber content leads to a decrease to 25 MPa, establishing a 40% rubber threshold for optimal strength. Conversely, 3% waste wire reinforcement enhances the strength to 106 MPa. Microstructural investigations reveal that increased rubber content adversely affects compressive strength by weakening the cement matrix, and reducing calcium-silicate-hydrate (C-S-H) formation. Significantly, the study reveals that replacing silica sand with rubber powder, along with waste wire reinforcement, substantially reduces the carbon footprint of the material, contributing to more sustainable construction methodologies.
dc.language	en
dc.publisher	Taylor & Francis
dc.relation.ispartof	European Journal of Environmental and Civil Engineering
dc.relation.isbasedon	10.1080/19648189.2024.2400485
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0502 Environmental Science and Management, 0905 Civil Engineering
dc.subject.classification	4005 Civil engineering
dc.title	Development of sustainable HPC using rubber powder and waste wire: carbon footprint analysis, mechanical and microstructural properties
dc.type	Journal Article
utslib.citation.volume	29
utslib.for	0502 Environmental Science and Management
utslib.for	0905 Civil Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Centre for Built Infrastructure Resilience (CBIR)
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated	2025-01-30T05:01:51Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	29
utslib.citation.issue	2

Abstract:

This research advances the development of eco-friendly high-performance concrete (HPC) by integrating tire rubber powder and waste wire, focusing on both enhanced mechanical properties and reduced environmental impact. Substituting up to 40% of silica sand with rubber powder helps maintain the compressive strength necessary for high-strength concrete applications. The addition of waste wire is designed to improve ductility. A comprehensive evaluation includes mechanical and microstructural analyses, such as compressive, splitting tensile, and flexural strength assessments, in addition to Scanning Electron Microscopy (SEM) and Differential Thermal Analysis (DTA). Environmental implications are assessed by measuring the embodied carbon footprint. Findings indicate that the absence of rubber powder allows for a compressive strength peak of 95 MPa, while 50% rubber content leads to a decrease to 25 MPa, establishing a 40% rubber threshold for optimal strength. Conversely, 3% waste wire reinforcement enhances the strength to 106 MPa. Microstructural investigations reveal that increased rubber content adversely affects compressive strength by weakening the cement matrix, and reducing calcium-silicate-hydrate (C-S-H) formation. Significantly, the study reveals that replacing silica sand with rubber powder, along with waste wire reinforcement, substantially reduces the carbon footprint of the material, contributing to more sustainable construction methodologies.

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http://hdl.handle.net/10453/184638