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Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres

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, pp. 145-156. (doi:10.1016/j.compstruct.2017.06.045).

Record type: Article

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
Restricted to Repository staff only until 15 October 2018.
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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
ORCID for A.B. Cundy: ORCID iD orcid.org/0000-0003-4368-2569

Catalogue record

Date deposited: 15 Aug 2017 16:30
Last modified: 15 Oct 2017 16:30

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Contributors

Author: S. Alrekabi
Author: A.B. Cundy ORCID iD
Author: A. Lampropoulos
Author: R.L.D. Whitby
Author: I. Savina

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