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.
012011
Alrekabi, S.
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Cundy, A.
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Whitby, Raymond L.D.
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Lampropoulos, A.
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Savina, I.
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Alrekabi, S.
d1e4c931-8081-401b-bb00-32878b5571fe
Cundy, A.
994fdc96-2dce-40f4-b74b-dc638286eb08
Whitby, Raymond L.D.
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Lampropoulos, A.
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Savina, I.
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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), .
(doi:10.1088/1742-6596/829/1/012011).
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.
Text
Alrekabi_2017_J._Phys.__Conf._Ser._829_012011
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e-pub ahead of print date: 21 April 2017
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Local EPrints ID: 418567
URI: http://eprints.soton.ac.uk/id/eprint/418567
ISSN: 1742-6588
PURE UUID: 0bd965e2-1026-43ba-96cd-890a9a080e2f
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Date deposited: 12 Mar 2018 17:30
Last modified: 16 Mar 2024 04:21
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Author:
S. Alrekabi
Author:
Raymond L.D. Whitby
Author:
A. Lampropoulos
Author:
I. Savina
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