An overview of beneficiary aspects of zinc oxide nanoparticles on performance of cement composites

Kumar, Munish; Bansal, Manjeet; Garg, Rishav

doi:10.1016/j.matpr.2020.07.215

Cited by 27 publications

(21 citation statements)

References 47 publications

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“…This value may slightly increase for the strength tested after 7 days, achieving the most significant increases after 28 days of curing. The strength increases evident after 7 days are due to the filler effect of ZnO nanoparticles (by which the number of pores is reduced), which reduces the permeability of the cement matrix, as well as increasing the density and compressive strength [ 69 ].…”

Section: Resultsmentioning

confidence: 99%

The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites

et al. 2022

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This study presents the results of research on cement mortars amended with two zinc oxides obtained by two different methods: hydrothermal ZnO-H and microwave ZnO-M. Our work indicates that, in contrast to spherical ZnO-H, ZnO-M was characterized by a columnar particle habit with a BET surface area of 8 m2/g, which was four times higher than that obtained for hydrothermally obtained zinc oxide. In addition, ZnO-M induced much better antimicrobial resistance, which was also reported in cement mortar with this oxide. Both zinc oxides showed very good photocatalytic properties, as demonstrated by the 4-chlorophenol degradation test. The reaction efficiency was high, reaching the level of 90%. However, zinc oxides significantly delayed the cement binder setting: ZnO-H by 430 min and ZnO-M by 380 min. This in turn affected the increments in compressive strength of the produced mortars. No significant change in compressive strength was observed on the first day of setting, while significant changes in the strengths of mortars with both zinc oxides were observed later after 7 and 28 days of hardening. As of these times, the compressive strengths were about 13–15.5% and 12–13% higher than the corresponding values for the reference mortar, respectively, for ZnO-H and ZnO-M. There were no significant changes in plasticity and flexural strength of mortars amended with both zinc oxides.

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Section: Resultsmentioning

confidence: 99%

The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites

et al. 2022

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“…These include mechanical milling, laser ablation, chemical etching, lithography, sputtering, etc. [7,41].…”

Section: Methods For Synthesis Of Nanomaterialsmentioning

confidence: 99%

“…Various means have been introduced to fabricate 0D nanomaterials such as quantum dots and nanoparticles due to their significant use in LEDs, solar cells, lasers, etc. [40][41][42].…”

Section: Classification Of Nanomaterialsmentioning

confidence: 99%

Study on potential applications and toxicity analysis of green synthesized nanoparticles

2021

Turk J Chem

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Nanomaterials have garnered the significant interest of scientists owing to their technological as well as medical applications. In particular, metal and metal oxide nanoparticles have gained prominence because of their enhanced performance as compared to their bulk counterparts. Metal-supported nanomaterials are anticipated to make major contributions to solving today's most challenging issues, like energy harvesting and environmental remediation. The incorporation of nanoparticles into sensors has significantly enhanced their precision and selectivity. With the advent of green chemistry, green synthetic techniques have been prioritized for the synthesis of single and multi-component nanomaterials. In the current review, we have addressed the 2 multidimensional applications of nanoparticles in various sectors, including surface coatings, biosensing, environmental remediation, energy devices, construction, and nano probing etc. This study focuses on the categorization of nanomaterials according to their source, dimensions, and composition, along with the exploration of synthetic modes. The eco-friendly and cost-effective greener route for the synthesis of nanoparticles has been explored in detail. Further, the antibacterial and cytotoxic potential has been addressed and toxicity analysis has been conducted. The study signifies the augmented potential of green synthesized nanoparticles that can prove as economically viable and eco-friendly alternatives to conventional materials.

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“…The reason for the lower strength may be the detrimental effect of the hydration of the C2S phase. Moreover, it was proven that hardened concrete containing ZnO is characterized by lower wettability, porosity and, consequently, reduced permeability compared to standard concrete (Kumar et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Zinc oxide as a functional admixture to cement composites

Klapiszewska¹,

Ławniczak²,

Parus³

et al. 2022

Physicochem. Probl. Miner. Process.

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There is an increasing trend in the modern construction industry to use nanomaterials, which allow to improve the performance of construction materials on the one hand, and to shape new properties on the other. This study presents the results of physicomechanical and antibacterial tests for cement composites modified with zinc nanooxide. The main aim of this study was to compare the structural and morphological properties of three selected commercial zinc nanooxides and to determine the influence of the above mentioned nanooxides on the physicomechanical properties of cement composites and the ability to inhibit the activity of gram-positive and gram-negative bacteria as well as fungi. It was shown that commercial nanooxides can significantly differ in terms of physicochemical properties, which depend on their production method. Two of them were characterized by high specific surface areas, which in turn translated into rheological properties of cement mortars. Nanooxides with higher specific surface areas tend to reduce the plasticity of the mortars. According to the literature data, all nanooxides caused a delay in cement binder setting by more than 100%. This resulted in a reduction of the early one-day flexural and compressive strength of the composite. In the later curing period, especially after 7 days of hardening, a significant acceleration of the hydration process was observed in composites with the addition of all nanooxides, which was confirmed by significant increases in mechanical parameters. Nevertheless, the tested nanooxides showed different sensitivity towards microorganisms, which was influenced by both the type of nanooxide and bacteria.

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An overview of beneficiary aspects of zinc oxide nanoparticles on performance of cement composites

Cited by 27 publications

References 47 publications

The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites

The In Situ Hydrothermal and Microwave Syntheses of Zinc Oxides for Functional Cement Composites

Study on potential applications and toxicity analysis of green synthesized nanoparticles

Zinc oxide as a functional admixture to cement composites

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