Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes

B. Rodríguez, J. H. Quintero, Y. P. Arias, O. A. Mendoza-Reales, J. C. Ochoa-Botero, R. D. Toledo-Filho

Resultado de la investigación: Contribución a una conferenciaArtículoInvestigación

1 Cita (Scopus)

Resumen

© Published under licence by IOP Publishing Ltd. This work studies the reinforcing effect of Multi Walled Carbon Nanotubes (MWCNT) on cement pastes. A 0.35% solid concentration of MWCNT in powder was dispersed in deionized water with sodium dodecyl sulfate (cationic surfactant), cetylpyridinium chloride (anionic surfactant) and triton X-100 (amphoteric surfactant) using an ultrasonic tip processor. Three concentrations of each surfactant (1mM, 10mM and 100mM) were tested, and all samples were sonicated until an adequate dispersion degree was obtained. Cement pastes with additions of carbon nanotubes of 0.15% by mass of cement were produced in two steps; first the dispersions of MWCNT were combined with the mixing water using an ultrasonic tip processor to guarantee homogeneity, and then cement was added and mixed until a homogeneous paste was obtained. Direct tensile strength, apparent density and open porosity of the pastes were measured after 7 days of curing. It was found that the MWCNT/surfactants dispersions decrease the mechanical properties of the cement based matrix due to an increased porosity caused by the presence of surfactants.
Idioma originalInglés estadounidense
DOI
EstadoPublicada - 29 dic 2017
EventoJournal of Physics: Conference Series -
Duración: 29 dic 2017 → …

Conferencia

ConferenciaJournal of Physics: Conference Series
Período29/12/17 → …

Huella dactilar

cements
carbon nanotubes
surfactants
mechanical properties
central processing units
ultrasonics
porosity
curing
sodium sulfates
tensile strength
water
homogeneity
chlorides
matrices

Citar esto

Rodríguez, B., Quintero, J. H., Arias, Y. P., Mendoza-Reales, O. A., Ochoa-Botero, J. C., & Toledo-Filho, R. D. (2017). Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes. Papel presentado en Journal of Physics: Conference Series, . https://doi.org/10.1088/1742-6596/935/1/012014
Rodríguez, B. ; Quintero, J. H. ; Arias, Y. P. ; Mendoza-Reales, O. A. ; Ochoa-Botero, J. C. ; Toledo-Filho, R. D. / Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes. Papel presentado en Journal of Physics: Conference Series, .
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abstract = "{\circledC} Published under licence by IOP Publishing Ltd. This work studies the reinforcing effect of Multi Walled Carbon Nanotubes (MWCNT) on cement pastes. A 0.35{\%} solid concentration of MWCNT in powder was dispersed in deionized water with sodium dodecyl sulfate (cationic surfactant), cetylpyridinium chloride (anionic surfactant) and triton X-100 (amphoteric surfactant) using an ultrasonic tip processor. Three concentrations of each surfactant (1mM, 10mM and 100mM) were tested, and all samples were sonicated until an adequate dispersion degree was obtained. Cement pastes with additions of carbon nanotubes of 0.15{\%} by mass of cement were produced in two steps; first the dispersions of MWCNT were combined with the mixing water using an ultrasonic tip processor to guarantee homogeneity, and then cement was added and mixed until a homogeneous paste was obtained. Direct tensile strength, apparent density and open porosity of the pastes were measured after 7 days of curing. It was found that the MWCNT/surfactants dispersions decrease the mechanical properties of the cement based matrix due to an increased porosity caused by the presence of surfactants.",
author = "B. Rodr{\'i}guez and Quintero, {J. H.} and Arias, {Y. P.} and Mendoza-Reales, {O. A.} and Ochoa-Botero, {J. C.} and Toledo-Filho, {R. D.}",
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Rodríguez, B, Quintero, JH, Arias, YP, Mendoza-Reales, OA, Ochoa-Botero, JC & Toledo-Filho, RD 2017, 'Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes' Papel presentado en, 29/12/17, . https://doi.org/10.1088/1742-6596/935/1/012014

Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes. / Rodríguez, B.; Quintero, J. H.; Arias, Y. P.; Mendoza-Reales, O. A.; Ochoa-Botero, J. C.; Toledo-Filho, R. D.

2017. Papel presentado en Journal of Physics: Conference Series, .

Resultado de la investigación: Contribución a una conferenciaArtículoInvestigación

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T1 - Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes

AU - Rodríguez, B.

AU - Quintero, J. H.

AU - Arias, Y. P.

AU - Mendoza-Reales, O. A.

AU - Ochoa-Botero, J. C.

AU - Toledo-Filho, R. D.

PY - 2017/12/29

Y1 - 2017/12/29

N2 - © Published under licence by IOP Publishing Ltd. This work studies the reinforcing effect of Multi Walled Carbon Nanotubes (MWCNT) on cement pastes. A 0.35% solid concentration of MWCNT in powder was dispersed in deionized water with sodium dodecyl sulfate (cationic surfactant), cetylpyridinium chloride (anionic surfactant) and triton X-100 (amphoteric surfactant) using an ultrasonic tip processor. Three concentrations of each surfactant (1mM, 10mM and 100mM) were tested, and all samples were sonicated until an adequate dispersion degree was obtained. Cement pastes with additions of carbon nanotubes of 0.15% by mass of cement were produced in two steps; first the dispersions of MWCNT were combined with the mixing water using an ultrasonic tip processor to guarantee homogeneity, and then cement was added and mixed until a homogeneous paste was obtained. Direct tensile strength, apparent density and open porosity of the pastes were measured after 7 days of curing. It was found that the MWCNT/surfactants dispersions decrease the mechanical properties of the cement based matrix due to an increased porosity caused by the presence of surfactants.

AB - © Published under licence by IOP Publishing Ltd. This work studies the reinforcing effect of Multi Walled Carbon Nanotubes (MWCNT) on cement pastes. A 0.35% solid concentration of MWCNT in powder was dispersed in deionized water with sodium dodecyl sulfate (cationic surfactant), cetylpyridinium chloride (anionic surfactant) and triton X-100 (amphoteric surfactant) using an ultrasonic tip processor. Three concentrations of each surfactant (1mM, 10mM and 100mM) were tested, and all samples were sonicated until an adequate dispersion degree was obtained. Cement pastes with additions of carbon nanotubes of 0.15% by mass of cement were produced in two steps; first the dispersions of MWCNT were combined with the mixing water using an ultrasonic tip processor to guarantee homogeneity, and then cement was added and mixed until a homogeneous paste was obtained. Direct tensile strength, apparent density and open porosity of the pastes were measured after 7 days of curing. It was found that the MWCNT/surfactants dispersions decrease the mechanical properties of the cement based matrix due to an increased porosity caused by the presence of surfactants.

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DO - 10.1088/1742-6596/935/1/012014

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Rodríguez B, Quintero JH, Arias YP, Mendoza-Reales OA, Ochoa-Botero JC, Toledo-Filho RD. Influence of MWCNT/surfactant dispersions on the mechanical properties of Portland cement pastes. 2017. Papel presentado en Journal of Physics: Conference Series, . https://doi.org/10.1088/1742-6596/935/1/012014