Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres
Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres
Use of hybrid fibre composites that exploit the synergistic effect of nano- and micro-additives can potentially lead to significant improvements in the toughness and mechanical properties of fibre reinforced cementitious materials. In this study, the mechanical properties of two types of novel cementitious composite (Carbon Nano-Fibre (CNF) Composites, and Hybrid-Fibre Composites) at various curing ages have been evaluated, along with their microstructure. Experimental results show a positive impact of nano-fibres on the mechanical performance of the cementitious composites: improvements of 40% in flexural strength, 45% in tensile strength, and 85% in toughness were observed when a low mass % (0.025%) of CNFs was combined with steel fibres. SEM observations revealed that reinforcement at the nanoscale prevented nano-crack development within the composites, with a greater amount of energy required to initiate and propagate cracks and cause material failure.
145-156
Alrekabi, S.
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Cundy, A.B.
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Lampropoulos, A.
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Whitby, R.L.D.
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Savina, I.
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15 October 2017
Alrekabi, S.
d1e4c931-8081-401b-bb00-32878b5571fe
Cundy, A.B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Lampropoulos, A.
cb4d2db2-76cb-4bef-be28-2fa4d0902de2
Whitby, R.L.D.
2c4fef7a-ce81-44ea-842e-27dbd56ac5c4
Savina, I.
8ef1c33e-636b-4916-8ee6-deb602d9b06c
Alrekabi, S., Cundy, A.B., Lampropoulos, A., Whitby, R.L.D. and Savina, I.
(2017)
Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres.
Composite Structures, 178, .
(doi:10.1016/j.compstruct.2017.06.045).
Abstract
Use of hybrid fibre composites that exploit the synergistic effect of nano- and micro-additives can potentially lead to significant improvements in the toughness and mechanical properties of fibre reinforced cementitious materials. In this study, the mechanical properties of two types of novel cementitious composite (Carbon Nano-Fibre (CNF) Composites, and Hybrid-Fibre Composites) at various curing ages have been evaluated, along with their microstructure. Experimental results show a positive impact of nano-fibres on the mechanical performance of the cementitious composites: improvements of 40% in flexural strength, 45% in tensile strength, and 85% in toughness were observed when a low mass % (0.025%) of CNFs was combined with steel fibres. SEM observations revealed that reinforcement at the nanoscale prevented nano-crack development within the composites, with a greater amount of energy required to initiate and propagate cracks and cause material failure.
Text
Alrekabi et al COST 2017 final accepted version
- Accepted Manuscript
More information
Accepted/In Press date: 18 June 2017
e-pub ahead of print date: 21 June 2017
Published date: 15 October 2017
Identifiers
Local EPrints ID: 413119
URI: http://eprints.soton.ac.uk/id/eprint/413119
ISSN: 0263-8223
PURE UUID: aa940e5b-c209-4faa-815a-a725b7a35c41
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Date deposited: 15 Aug 2017 16:30
Last modified: 16 Mar 2024 05:37
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Author:
S. Alrekabi
Author:
A. Lampropoulos
Author:
R.L.D. Whitby
Author:
I. Savina
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