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Durability characterisation of portland cement–carbon nanotube nanocomposites

MacLeod, Alastair JN, Gates, Will P and Collins, Frank 2020, Durability characterisation of portland cement–carbon nanotube nanocomposites, Materials, vol. 13, no. 18, pp. 1-22, doi: 10.3390/ma13184097.

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Title Durability characterisation of portland cement–carbon nanotube nanocomposites
Author(s) MacLeod, Alastair JNORCID iD for MacLeod, Alastair JN orcid.org/0000-0003-3909-1459
Gates, Will PORCID iD for Gates, Will P orcid.org/0000-0001-7388-0289
Collins, FrankORCID iD for Collins, Frank orcid.org/0000-0001-6331-5390
Journal name Materials
Volume number 13
Issue number 18
Article ID 4097
Start page 1
End page 22
Total pages 22
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2020-09
ISSN 1996-1944
1996-1944
Keyword(s) Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Physics, Applied
Physics, Condensed Matter
Chemistry
Materials Science
Physics
carbon nanotubes
permeability
X-ray computed microtomography
chloride diffusion
sorptivity
durability
Summary Multiwalled carbon nanotubes have outstanding mechanical properties that, when combined with Portland cement, can provide cementitious composites that could lead to the innovative construction of stronger, lighter, and thinner built infrastructure. This paper addresses a knowledge gap that relates to the durability of CNT–cement composites. The durability to corrosive chloride, uptake of water by sorption, and flow of the permeability of water acting under high water pressure are addressed. Flow simulations were undertaken through segmented 3D pore networks, based on X-ray computed microtomography measurements, the creation of a virtual microstructure, and fluid simulations that were compared with larger-scale samples. The investigation showed decreased water sorptivity of CNT–cement mixtures, indicating improved durability for the cover zone of concrete that is prone to the uptake of water and water-borne corrosives. Chloride diffusion of CNT–cement composites provided up to 63% improvement compared with control samples. The favourable durability bodes well for the construction of long-life CNT-reinforced concrete infrastructure.
Language eng
DOI 10.3390/ma13184097
Indigenous content off
Field of Research 090503 Construction Materials
03 Chemical Sciences
09 Engineering
Socio Economic Objective 870301 Cement and Concrete Materials
HERDC Research category C1 Refereed article in a scholarly journal
Grant ID Australian Research Council Training/Scholarships
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30142347

Document type: Journal Article
Collections: Institute for Frontier Materials
Open Access Collection
GTP Research
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.