2020
DOI: 10.3390/app10217948
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Influence of Powder and Liquid Multi-Wall Carbon Nanotubes on Hydration and Dispersion of the Cementitious Composites

Abstract: Two types of multi-walled carbon nanotubes (MWCNTs), powder and liquid, were added to cementitious composites to build self-sensing concrete. To properly evaluate and quantify the effect of MWCNTs on electrical resistance, various tests, including isothermal conduction calorimetry, were carried out. One of primary issues of self-monitoring concrete is dispersion, so ultrasonication was used to properly mix the CNTs in the dispersion solution, and silica fume was employed to make the specimens. Scanning electro… Show more

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Cited by 11 publications
(2 citation statements)
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“…The mixture proportions are shown in Table 3. The CNTs used in this study are divided into MW and SW and prepared at three levels (0, 1.0, and 2.0% mass fraction), which are determined based on the literature review [17,18]. The specimens were fabricated in accordance with KS L ISO 679 [25].…”
Section: Mixture Proportionsmentioning
confidence: 99%
See 1 more Smart Citation
“…The mixture proportions are shown in Table 3. The CNTs used in this study are divided into MW and SW and prepared at three levels (0, 1.0, and 2.0% mass fraction), which are determined based on the literature review [17,18]. The specimens were fabricated in accordance with KS L ISO 679 [25].…”
Section: Mixture Proportionsmentioning
confidence: 99%
“…In addition to the incorporation of steel fiber in concrete mixtures, using carbon nanotubes (CNTs) has Materials 2021, 14, 6721 2 of 14 been investigated by many researchers and scholars because CNTs can give the concrete composites the conductivity [14][15][16]. Generally, the dosage of CNTs was up to 2.0% of the weight of the binder because of its low density of 1.3-1.4 g/cm 3 [17,18]. Moreover, poor dispersion of CNTs in the composites induced by van der Waals forces between the CNT particles has become a major issue because it caused low mechanical performance of the concrete structures [19].…”
Section: Introductionmentioning
confidence: 99%