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Effect of undensified silica fume on the dispersion of carbon nanotubes within a cementitious composite

Effect of undensified silica fume on the dispersion of carbon nanotubes within a cementitious composite
Effect of undensified silica fume on the dispersion of carbon nanotubes within a cementitious composite
The synergistic effect of multi-walled carbon nanotubes (MWCNTs) and Undensified Silica Fume (USF) on the microstructure of cementitious composites has been studied. In the current work, USF was used to enhance the dispersion of nanotubes throughout the composite and prevent the re-agglomeration of nanotubes by providing a physical barrier of particles of small size. Ultrasonication was employed to disperse MWCNTs in water in the presence of polycarboxylate-based superplasticizer (PCE) as a dispersion agent. The results indicate that incorporation of USF considerably improves the dispersion of nanotubes in the composites, with subsequent enhancement of composite packing density. This enhancement can be attributed to the synergistic effect of MWCNTs and USF in reducing the volume of pores through the cementitious composites.
1742-6588
012011
Alrekabi, S.
d1e4c931-8081-401b-bb00-32878b5571fe
Cundy, A.
994fdc96-2dce-40f4-b74b-dc638286eb08
Whitby, Raymond L.D.
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Lampropoulos, A.
cb4d2db2-76cb-4bef-be28-2fa4d0902de2
Savina, I.
8ef1c33e-636b-4916-8ee6-deb602d9b06c
Alrekabi, S.
d1e4c931-8081-401b-bb00-32878b5571fe
Cundy, A.
994fdc96-2dce-40f4-b74b-dc638286eb08
Whitby, Raymond L.D.
2c4fef7a-ce81-44ea-842e-27dbd56ac5c4
Lampropoulos, A.
cb4d2db2-76cb-4bef-be28-2fa4d0902de2
Savina, I.
8ef1c33e-636b-4916-8ee6-deb602d9b06c

Alrekabi, S., Cundy, A., Whitby, Raymond L.D., Lampropoulos, A. and Savina, I. (2017) Effect of undensified silica fume on the dispersion of carbon nanotubes within a cementitious composite. Journal of Physics: Conference Series, 829 (1), 012011. (doi:10.1088/1742-6596/829/1/012011).

Record type: Article

Abstract

The synergistic effect of multi-walled carbon nanotubes (MWCNTs) and Undensified Silica Fume (USF) on the microstructure of cementitious composites has been studied. In the current work, USF was used to enhance the dispersion of nanotubes throughout the composite and prevent the re-agglomeration of nanotubes by providing a physical barrier of particles of small size. Ultrasonication was employed to disperse MWCNTs in water in the presence of polycarboxylate-based superplasticizer (PCE) as a dispersion agent. The results indicate that incorporation of USF considerably improves the dispersion of nanotubes in the composites, with subsequent enhancement of composite packing density. This enhancement can be attributed to the synergistic effect of MWCNTs and USF in reducing the volume of pores through the cementitious composites.

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e-pub ahead of print date: 21 April 2017

Identifiers

Local EPrints ID: 418567
URI: https://eprints.soton.ac.uk/id/eprint/418567
ISSN: 1742-6588
PURE UUID: 0bd965e2-1026-43ba-96cd-890a9a080e2f
ORCID for A. Cundy: ORCID iD orcid.org/0000-0003-4368-2569

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Date deposited: 12 Mar 2018 17:30
Last modified: 19 Jul 2019 00:35

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