2019
DOI: 10.1155/2019/2646012
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Mechanical and Self-Sensing Properties of Multiwalled Carbon Nanotube-Reinforced ECCs

Abstract: is paper investigates the effect of type and dosage of multiwalled carbon nanotubes (MWCNTs) on the mechanical and selfsensing properties of engineered cementitious composites (ECCs). Two types of MWCNTs (MWCNTa and MWCNTb) were employed. e tensile and flexural strengths of CNT-reinforced ECCs were improved compared with normal ECCs, while the ultimate tensile strain and midspan deflection were reduced. Compared with the dosage of MWCNTs, the type had less effect on these properties. e percolation threshold wa… Show more

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Cited by 11 publications
(4 citation statements)
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References 28 publications
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“…CFs formed an electrical percolation network at 0.25% as evidenced by the low resistivity values (see Figure 8 ). Similar resistivity values were reported previously for CF-based and other cementitious composites above the percolation threshold of the conductive fillers [ 21 , 22 , 23 , 24 ]. Therefore, the composites containing 0.25% CFs provided high values of FCR.…”
Section: Resultssupporting
confidence: 88%
See 1 more Smart Citation
“…CFs formed an electrical percolation network at 0.25% as evidenced by the low resistivity values (see Figure 8 ). Similar resistivity values were reported previously for CF-based and other cementitious composites above the percolation threshold of the conductive fillers [ 21 , 22 , 23 , 24 ]. Therefore, the composites containing 0.25% CFs provided high values of FCR.…”
Section: Resultssupporting
confidence: 88%
“…The electrical resistivity decreased with the increase in the CF wt.% and the sample containing 0.75 wt.% CF showed an electrical resistivity of 0.6 Ω.m. The electrical resistivity obtained in this case was lower when compared to previously reported mortar samples containing CF, carbon black and other nanomaterials [ 21 , 22 , 23 , 24 ].…”
Section: Resultscontrasting
confidence: 70%
“…Additionally, the conductivity of CNTs is also very high, with resistivity being reduced by 78% after the addition of only 0.04 wt% [20]. CNT-containing ECC performs well in self-sensing whether either a bending load or cyclic load is applied [21]. CB also performs well in reducing resistivity, and the addition of carbon black to ECC is effective in increasing the tensile strain.…”
Section: Introductionmentioning
confidence: 99%
“…Currently, advancements in nanotechnology made it possible to control nano size cracks (pores with diameter <20 nm) before micro size cracks are developed [ 20 ]. Hence, nanomaterials like graphene, carbon nanotubes, and graphene oxide were studied by many researchers [ 21 , 22 , 23 ].…”
Section: Introductionmentioning
confidence: 99%