The research reported in this paper focused on the improvement of repair mortars using multi-walled carbon nanotubes. Compressive strength, squeeze flow and flow-table tests were performed to assess the effects of incorporation of nanotubes on the rheological and strength properties of mortars. A reference mortar and five mortars with nanotubes were made, with nanotubes sourced from two different manufacturers. It was found that the cementitious composites were stiffer with higher nanotube content and that no more than 0·3% should be used to ensure mortar fluidity. Regarding the compressive strength, the results indicated that 0·3 and 0·4% of nanotubes increased the strength by 22 and 27%, respectively. However, 0·5% made the mortar difficult to mix and did not result in increased strength.
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April 2019
Research Article|
October 03 2017
Improvement of repair mortars using multi-walled carbon nanotubes
Marcelo Henrique Farias de Medeiros, PhD;
Marcelo Henrique Farias de Medeiros, PhD
Professor, Department of Civil Construction, Federal University of Parana – UFPR, Curitiba, Brazil
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Francielle Dranka;
Francielle Dranka
Master's student, Department of Civil Construction, Federal University of Parana – UFPR, Curitiba, Brazil
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Diego Jesus Souza;
Diego Jesus Souza
PhD student, Department of Civil Construction, Federal University of Parana – UFPR, Curitiba, Brazil
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Ronaldo A. Medeiros-Junior, PhD
Ronaldo A. Medeiros-Junior, PhD
Professor, Department of Civil Construction, Federal University of Parana – UFPR, Curitiba, Brazil (corresponding author: ronaldodemedeirosjr@yahoo.com.br)
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Publisher: Emerald Publishing
Received:
August 18 2016
Accepted:
August 09 2017
Online ISSN: 1747-6518
Print ISSN: 1747-650X
ICE Publishing: All rights reserved
2017
Proceedings of the Institution of Civil Engineers - Construction Materials (2019) 172 (2): 71–84.
Article history
Received:
August 18 2016
Accepted:
August 09 2017
Citation
de Medeiros MHF, Dranka F, Souza DJ, Medeiros-Junior RA (2019), "Improvement of repair mortars using multi-walled carbon nanotubes". Proceedings of the Institution of Civil Engineers - Construction Materials, Vol. 172 No. 2 pp. 71–84, doi: https://doi.org/10.1680/jcoma.16.00049
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