| Download | - View accepted manuscript: Carbon nanotube/cement composites - early results and potential applications (PDF, 1.3 MiB)
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| Author | Search for: Makar, J. M.1; Search for: Margeson, J. C.1; Search for: Luh, J. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Conference | 3rd International Conference on Construction Materials: Performance, Innovation and Structural Implications, August 21, 2005, Vancouver, B.C., Canada |
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| Subject | Cement/Concrete; cement; carbon nanotubes; nanotechnology; concrete; composites; Vickers hardness |
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| Abstract | Carbon nanotubes (CNT) have unique mechanical properties that make them close to ideal reinforcing materials. Single walled CNT have a modulus of elasticity of approximately 1 TPa, yield strengths measured at between 20 and 60 GPa, and measured elastic strains at yield that are greater than 10%. In addition, CNT typically have aspect ratios of 1000 or more.These attractive properties have led to considerable research on CNT composites. While particular attention has been paid to polymer based materials, metal and ceramic matrix materials have also been described in the literature. A new area of research involves CNT/cement systems. Early results investigating the microstructure of these systems show promise for the eventual development of carbon nanotube/cement composites. Scanning electron microscopy at the National Research Council has observed crack bridging and fiber pull-out in CNT/cement composites. Evidence for bonding between CNT and the cement matrix has also been observed. These reinforcing mechanisms have been shown to produce higher microhardness measurements at early stages of sample hydration as compared to cement control samples without CNT. This paper describes current developments in the production of CNT-cement composites. Possible applications for a successful composite material and areas of potential structural research activity are also discussed. |
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| Publication date | 2005-08-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 47643
NRC-IRC-16769 |
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| NPARC number | 20377873 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 8b008cca-c122-44e1-a221-b307cb2229cc |
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| Record created | 2012-07-24 |
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| Record modified | 2020-04-07 |
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