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Effect of carbon na...
Effect of carbon nanotube aqueous dispersion quality on mechanical properties of cement composite
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- Nasibulina, Larisa I. (författare)
- Department of Applied Physics, Aalto University School of Science, Puumiehenkuja 2, 02150 Espoo, Finland
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- Anoshkin, Ilya V. (författare)
- Department of Applied Physics, Aalto University School of Science, Puumiehenkuja 2, 02150 Espoo, Finland
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- Nasibulin, Albert G. (författare)
- Department of Applied Physics, Aalto University School of Science, Puumiehenkuja 2, 02150 Espoo, Finland
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- Cwirzen, Andrzej (författare)
- Department of Civil and Structural Engineering, Aalto University School of Engineering, Rakentajanaukio 4 A, 02150 Espoo, Finland
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- Penttala, Vesa (författare)
- Department of Civil and Structural Engineering, Aalto University School of Engineering, Rakentajanaukio 4 A, 02150 Espoo, Finland
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- Kauppinen, Esko I. (författare)
- Department of Applied Physics, Aalto University School of Science, Puumiehenkuja 2, 02150 Espoo, Finland
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(creator_code:org_t)
- Hindawi Limited, 2012
- 2012
- Engelska.
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Ingår i: Journal of Nanomaterials. - : Hindawi Limited. - 1687-4110 .- 1687-4129. ; 2012
- Relaterad länk:
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https://doi.org/10.1...
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http://downloads.hin...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- An effect of the quality of carbon nanotube (CNT) dispersions added to cement on paste mechanical properties has been studied. High-quality dispersions of few-walled CNT (FWCNTs) were produced in two steps. First, FWCNTs were functionalized in a mixture of nitric and sulfuric acids (70 wt.% and 96 wt.%, resp.) at80∘C. Second, functionalized FWCNTs were washed out by acetone to remove carboxylated carbonaceous fragments (CCFs) formed during CNT oxidation. Mechanical test results showed 2-fold increase in the compressive strength of the cement paste prepared from the dispersion of acetone-washed functionalized FWCNTs, which is believed to occur due to the chemical interaction between cement matrix and functional groups (–COOH and –OH). Utilisation of unwashed FWCNTs led to a marginal improvement of mechanical properties of the cement pastes, whereas surfactant-treated functionalized FWCNT dispersions only worsened the mechanical properties.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
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- art (ämneskategori)
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