Effect of Carbon Nanotube Aqueous Dispersion Quality on Mechanical Properties of Cement Composite

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Effect of Carbon Nanotube Aqueous Dispersion Quality on Mechanical Properties of Cement Composite. / Nasibulina, Larisa I.; Anoshkin, Ilya V.; Nasibulin, Albert G.; Cwirzen, Andrzej; Penttala, Vesa; Kauppinen, Esko I.

In: Journal of Nanomaterials, Vol. 2012, 169262, 2012, p. 1-6.

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Nasibulina, Larisa I. ; Anoshkin, Ilya V. ; Nasibulin, Albert G. ; Cwirzen, Andrzej ; Penttala, Vesa ; Kauppinen, Esko I. / Effect of Carbon Nanotube Aqueous Dispersion Quality on Mechanical Properties of Cement Composite. In: Journal of Nanomaterials. 2012 ; Vol. 2012. pp. 1-6.

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@article{8b208d14c6aa42e3a5199fedd1483625,
title = "Effect of Carbon Nanotube Aqueous Dispersion Quality on Mechanical Properties of Cement Composite",
abstract = "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.) at 8 0 ∘ 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.",
author = "Nasibulina, {Larisa I.} and Anoshkin, {Ilya V.} and Nasibulin, {Albert G.} and Andrzej Cwirzen and Vesa Penttala and Kauppinen, {Esko I.}",
year = "2012",
doi = "10.1155/2012/169262",
language = "English",
volume = "2012",
pages = "1--6",
journal = "Journal of Nanomaterials",
issn = "1687-4110",
publisher = "Hindawi Publishing Corporation",

}

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TY - JOUR

T1 - Effect of Carbon Nanotube Aqueous Dispersion Quality on Mechanical Properties of Cement Composite

AU - Nasibulina, Larisa I.

AU - Anoshkin, Ilya V.

AU - Nasibulin, Albert G.

AU - Cwirzen, Andrzej

AU - Penttala, Vesa

AU - Kauppinen, Esko I.

PY - 2012

Y1 - 2012

N2 - 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.) at 8 0 ∘ 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.

AB - 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.) at 8 0 ∘ 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.

U2 - 10.1155/2012/169262

DO - 10.1155/2012/169262

M3 - Article

VL - 2012

SP - 1

EP - 6

JO - Journal of Nanomaterials

JF - Journal of Nanomaterials

SN - 1687-4110

M1 - 169262

ER -

ID: 740190