Mechanical properties of high ductility hybrid fibres reinforced magnesium phosphate cement-based composites

Feng, H; Li, L; Wang, W; Cheng, Z; Gao, D

Mechanical properties of high ductility hybrid fibres reinforced magnesium phosphate cement-based composites

Feng, H Li, L Wang, W

Cheng, Z Gao, D

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Composite Structures, 2022, 284, pp. 115219
Issue Date:: 2022-03-15

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Field	Value	Language
dc.contributor.author	Feng, H
dc.contributor.author	Li, L
dc.contributor.author	Wang, W https://orcid.org/0000-0003-2782-8652
dc.contributor.author	Cheng, Z
dc.contributor.author	Gao, D
dc.date.accessioned	2023-04-06T02:54:48Z
dc.date.available	2023-04-06T02:54:48Z
dc.date.issued	2022-03-15
dc.identifier.citation	Composite Structures, 2022, 284, pp. 115219
dc.identifier.issn	0263-8223
dc.identifier.uri	http://hdl.handle.net/10453/169277
dc.description.abstract	Polyvinyl alcohol (PVA) fibres were mixed with polypropylene (PP) fibres or micro-steel (MS) fibres, and then were added into MPC to improve its mechanical properties in this study. The influences of fibre hybrid schemes on the workability and mechanical properties of MPC-based composites were investigated experimentally. The crack characteristics of specimens with various fibre hybrid schemes were classified. Moreover, the microstructure of hybrid fibres reinforced MPC-based composites was further assessed using scanning electron microscopy (SEM). The experimental results show that the PVA fibres can well bridge the micro-cracks and improve the ductility index as well as the toughness index of MPC-based composites, and the MS fibres can effectively enhance the compressive and flexural strengths of MPC-based composites. PP fibres have no significant effect on the strength and deformability of the MPC-based composites in the hybrid system. The PVA and MS fibres can effectively work together to improve both the ductility and strength of MPC-based composites. Based on the current study, by adding 1.6% PVA and 0.6% MS fibres into the MPC, the compressive strength and flexural strength increases by 12.7% and 25.7%, respectively, as compared to MPC with 1.6% PVA fibres. Besides, the toughness index of the specimens increases by 26.9% and the bending performance is significantly improved.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Composite Structures
dc.relation.isbasedon	10.1016/j.compstruct.2022.115219
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering
dc.subject.classification	Materials
dc.title	Mechanical properties of high ductility hybrid fibres reinforced magnesium phosphate cement-based composites
dc.type	Journal Article
utslib.citation.volume	284
utslib.for	09 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
utslib.copyright.status	closed_access	*
dc.date.updated	2023-04-06T02:54:45Z
pubs.publication-status	Published
pubs.volume	284

Abstract:

Polyvinyl alcohol (PVA) fibres were mixed with polypropylene (PP) fibres or micro-steel (MS) fibres, and then were added into MPC to improve its mechanical properties in this study. The influences of fibre hybrid schemes on the workability and mechanical properties of MPC-based composites were investigated experimentally. The crack characteristics of specimens with various fibre hybrid schemes were classified. Moreover, the microstructure of hybrid fibres reinforced MPC-based composites was further assessed using scanning electron microscopy (SEM). The experimental results show that the PVA fibres can well bridge the micro-cracks and improve the ductility index as well as the toughness index of MPC-based composites, and the MS fibres can effectively enhance the compressive and flexural strengths of MPC-based composites. PP fibres have no significant effect on the strength and deformability of the MPC-based composites in the hybrid system. The PVA and MS fibres can effectively work together to improve both the ductility and strength of MPC-based composites. Based on the current study, by adding 1.6% PVA and 0.6% MS fibres into the MPC, the compressive strength and flexural strength increases by 12.7% and 25.7%, respectively, as compared to MPC with 1.6% PVA fibres. Besides, the toughness index of the specimens increases by 26.9% and the bending performance is significantly improved.

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http://hdl.handle.net/10453/169277