Synergistic effect of zero-dimensional spherical carbon nanoparticles and one-dimensional carbon nanotubes on properties of cement-based ceramic matrix: microstructural perspectives and crystallization investigations

Sharma, Snigdha; Kothiyal, N.C.

doi:10.1080/09276440.2015.1076281

Cited by 29 publications

(3 citation statements)

References 61 publications

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“…Graphene oxide (GO), nano graphite platelets (NGPs), graphene-based derived, carbon nanotubes (CNTs), etc., are carbon-based nanomaterials that might definitely result in “smart” properties [ 5 , 13 ]. Chougan, M., E. Marotta, F. R. Lamastra, F. Vivio, G. Montesperelli, U. Ianniruberto, S. H. Ghaffar, M. J. Al-kheetan, and A. Bianco [ 14 ] examined the behavior of density, compressive strength, flexural strength, microstructure, and permeability properties of concrete with different commercial nano graphite content (i.e., 0.01%, 0.1%, and 0.2%), and noted a substantial increase in density and mechanical characteristics—up to 16% and 30%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Cementitious Composites Incorporating Nano Graphite Platelets as Additive Carbon Material

et al. 2021

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Nano graphite platelets (NGPs) belong to the carbon family and have a huge impact on the construction industry. NGPs are used as multi-functional fillers and have the potential to develop reinforcing within cementitious composites. In this paper, NGPs were incorporated in cementitious composites to investigate the effects of NGPs on the fresh, mechanical, durability, and microstructural properties of concrete. Five mixes were prepared with intrusion of NGPs (0%, 0.5%, 1.5%, 3%, and 5% by weight of cement). The properties studied involved workability, air content, hardened density, compressive strength, tensile strength, flexural strength, sorptivity, ultrasonic pulse velocity (UPV), water absorption, and external sulfate attack. The workability and percent air content decrease by 22.5% and 33.8%, respectively, for concrete with 5% NGPs compared to the control mix. The specimens containing 5% of NGPs revealed the hardened density, compressive, tensile, and flexural strength to increase by 11.4%, 38.5%, 31.6%, and 44.34%, respectively, compared to the control mix. The results revealed that the incorporation of 5%NGPs in cementitious composites reduces the sorptivity and water absorption by 32.2% and 73.9%, respectively, whereas, it increases the UPV value by 7.5% compared to the control mix. Furthermore, the incorporation of NGPs provided better resistance against external sulfate attacks. SEM–EDX spectroscopy was carried out to investigate its microstructural analysis.

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Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Cementitious Composites Incorporating Nano Graphite Platelets as Additive Carbon Material

et al. 2021

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“…[ 1–4 ] Up to now, human‐engineered composites with high mechanical and functional properties have been extensively employed in many fields, such as aerospace, military, transportation, sports apparatus, and electronic devices. [ 5,6 ] In particular, nanocomposites, among composites, have been sparking the interests of the research community owing to their outstanding properties tailored by nanoscale fillers such as 0D particles (fullerene), [ 7–9 ] 1D nanofibers (carbon nanotubes), [ 3,10,11 ] and 2D nanosheets (montmorillonite, graphene, boron nitride). [ 12–15 ] The 2D nanosheet filler shows superior advantages over 0D or 1D nanofillers due to much higher specific area.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Graphene/Polymer Nanocomposites

et al. 2020

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Nanocomposites, multiphase solid materials with at least one nanoscaled component, have been attracting ever‐increasing attention because of their unique properties. Graphene is an ideal filler for high‐performance multifunctional nanocomposites in light of its superior mechanical, electrical, thermal, and optical properties. However, the 2D nature of graphene usually gives rise to highly anisotropic features, which brings new opportunities to tailor nanocomposites by making full use of its excellent in‐plane properties. Here, recent progress on graphene/polymer nanocomposites is summarized with emphasis on strengthening/toughening, electrical conduction, thermal transportation, and photothermal energy conversion. The influence of the graphene configuration, including layer number, defects, and lateral size, on its intrinsic properties and the properties of graphene/polymer nanocomposites is systematically analyzed. Meanwhile, the role of the interfacial interaction between graphene and polymer in affecting the properties of nanocomposites is also explored. The correlation between the graphene distribution in the matrix and the properties of the nanocomposite is discussed in detail. The key challenges and possible solutions are also addressed. This review may provide a constructive guidance for preparing high‐performance graphene/polymer nanocomposite in the future.

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“…Relative to cementitious composites, CNTs have been explored for the purpose of enhancing Young’s modulus, compressive and flexural strengths, and electrical conductivity in the context of self-sensing structures. − A key challenge in making such applications possible is the dispersion of the generally highly entangled CNT agglomerates. As a rule, the dispersibility of CNTs strongly correlates with their free surface energy, which, for example, is determined by functional groups or impurities. − To disperse the usually nonpolar CNTs in highly polar water, numerous surfactants have been proposed. − Efficient dispersants for CNTs include comb-type polycarboxylates (PCEs), which are commonly used as high-range water-reducing admixtures (HRWRAs) in concrete. ,− PCEs have also been applied to disperse other carbon-based fillers such as graphite nanoplatelets, graphene nanoplatelets, − graphene oxides, − carbon nanofibers, ,− or carbon black . However, not all types of PCEs can successfully disperse CNTs, as was shown by Collins et al and Liebscher et al Rather than empirical testing, intensive mechanistic studies to understand fully the dispersion mechanisms of CNTs using PCEs are, hence, still important in order to comprehend which PCE might work well with which type of CNT.…”

Section: Introductionmentioning

confidence: 99%

Temperature- and pH-Dependent Dispersion of Highly Purified Multiwalled Carbon Nanotubes Using Polycarboxylate-Based Surfactants in Aqueous Suspension

et al. 2017

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Multiwalled carbon nanotubes (MWCNTs) were synthesized by chemical vapor deposition and subsequently purified by applying a hightemperature annealing process. The annealed material was characterized using Raman spectroscopy. Next, the interaction of the annealed MWCNTs with polycarboxylate (PCE) comb-copolymer surfactants was studied regarding the quality of dispersion in water, with a focus on the influence of the critical parameters temperature and pH. Optical micrographs and integral lighttransmission measurements revealed that both temperature and pH strongly impact the dispersion quality of the MWCNTs. Dynamic light scattering and zeta potential measurements of aqueous solutions of the diluted PCE samples proved that conformational changes occur in dependence on temperature as well as pH. Moreover, it was found that specific molecular conformations strongly affect their efficiency to disperse MWCNTs. On the basis of these experimental findings, a scheme illustrating the consequences of PCE coiling and stretching on successful CNT dispersion in water is presented.

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Synergistic effect of zero-dimensional spherical carbon nanoparticles and one-dimensional carbon nanotubes on properties of cement-based ceramic matrix: microstructural perspectives and crystallization investigations

Cited by 29 publications

References 61 publications

Performance Evaluation of Cementitious Composites Incorporating Nano Graphite Platelets as Additive Carbon Material

Performance Evaluation of Cementitious Composites Incorporating Nano Graphite Platelets as Additive Carbon Material

Recent Progress in Graphene/Polymer Nanocomposites

Temperature- and pH-Dependent Dispersion of Highly Purified Multiwalled Carbon Nanotubes Using Polycarboxylate-Based Surfactants in Aqueous Suspension

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