Development of nano cement concrete by top-down and bottom-up nanotechnology concept

Chakraborty, Sumit; Jo, Byung-Wan; Yoon, Young Soo

doi:10.1016/b978-0-12-817854-6.00007-6

Cited by 11 publications

(5 citation statements)

References 72 publications

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“…Pinzaru et al evaluated the toxicity of poly ethylene glycol (PEG)-coated AgNPs in vitro against human keratinocyte cell culture (HaCat) and in vivo in non-invasive tests on mice (rat species) without SKH-1 [132]. The in vitro results showed that at concentrations between 0.1 and 3.0 µmol/L, the number of viable cells was not affected during different periods (24,48, and 72 h). In turn, the concentrations of 10 and 50 µmol/L have showed a cytotoxic effect induced by nanoparticles, where in 48 and 72 h, the effect was more significant.…”

Section: Silver Nanoparticlesmentioning

confidence: 99%

“…In nanomedicine, NMs are applied in the mapping and diagnosis of diseases with the so-called “lab-on-a-chip” [ 18 ], the arrays of nanosensors [ 19 ], magnetic nanoparticles [ 20 ], and “quantum dots” [ 21 , 22 ]. Moreover, NMs can be applied as molecular nanostructures to reinforce asphalt and concrete [ 23 , 24 ]. Environmentally, NMs are also applied for purification and desalination [ 25 ], as well as in water treatment and control, in treating the effects of air pollution and in reducing the time of degradation of plastic [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

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Nanotoxicology and Nanosafety: Safety-by-Design and Testing at a Glance

Zielińska

Costa

Ferreira

et al. 2020

IJERPH

150

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This review offers a systematic discussion about nanotoxicology and nanosafety associated with nanomaterials during manufacture and further biomedical applications. A detailed introduction on nanomaterials and their most frequently uses, followed by the critical risk aspects related to regulatory uses and commercialization, is provided. Moreover, the impact of nanotoxicology in research over the last decades is discussed, together with the currently available toxicological methods in cell cultures (in vitro) and in living organisms (in vivo). A special focus is given to inorganic nanoparticles such as titanium dioxide nanoparticles (TiO2NPs) and silver nanoparticles (AgNPs). In vitro and in vivo case studies for the selected nanoparticles are discussed. The final part of this work describes the significance of nano-security for both risk assessment and environmental nanosafety. “Safety-by-Design” is defined as a starting point consisting on the implementation of the principles of drug discovery and development. The concept “Safety-by-Design” appears to be a way to “ensure safety”, but the superficiality and the lack of articulation with which it is treated still raises many doubts. Although the approach of “Safety-by-Design” to the principles of drug development has helped in the assessment of the toxicity of nanomaterials, a combination of scientific efforts is constantly urgent to ensure the consistency of methods and processes. This will ensure that the quality of nanomaterials is controlled and their safe development is promoted. Safety issues are considered strategies for discovering novel toxicological-related mechanisms still needed to be promoted.

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Section: Silver Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanotoxicology and Nanosafety: Safety-by-Design and Testing at a Glance

Zielińska

Costa

Ferreira

et al. 2020

IJERPH

150

View full text Add to dashboard Cite

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“…Various physical and chemical treatments like sonication, milling, and highpressure homogenization were involved in the top-down approach to nanoparticles [9]. In the bottom-up approach, the building blocks of the nanoparticles are formed first and assembled for producing the final particles [10][11][12][13]. Nanomaterials are classified into two, namely, organic nanomaterials and inorganic nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Evolution and Recent Scenario of Nanotechnology in Agriculture and Food Industries

Vijayakumar¹,

Surendhar²,

Natrayan

et al. 2022

Journal of Nanomaterials

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Nanotechnology is an emerging technology in the field of food and agriculture; every individual molecule and atom can be modified or controlled by this technology. Everything that exists on the earth is made up of atoms and molecules. Problems in all the fields can easily be overcome by modifying or altering their nanosize. Similarly, nanotechnology could address many issues in the agriculture and food industries. Nanomaterials play a keen role in the place of pesticides, fertilizers, and biosensors. Nutrition enhancement, safe delivery of bioactive components and micronutrients, and food preservations were facilitated by the applications of nanotechnologies. Efforts have to be taken to create awareness among the public in this nanotechnology field. Future research directions were identified in this review to improve the nanoembedded agriculture system. This article reviews the recent development in the agriculture and food industries through nanotechnology, application of nanotechnology in the food and agricultural sectors, and research backlogs in such sectors.

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“…The inclusion of nano-additives in cement composites reduces the degradation of the cementitious conglomerate, avoiding deterioration of the final construction, thus limiting the material consumption used either for its maintenance or replacement [11]. In addition, the use of nano-additives also improves the mechanical performance of the concrete, producing high-strength cementitious composites [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Few-Layers Graphene-Based Cement Mortars: Production Process and Mechanical Properties

et al. 2022

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Cement is the most-used construction material worldwide. Research for sustainable cement production has focused on including nanomaterials as additives to enhance cement performance (strength and durability) in recent decades. In this concern, graphene is considered one of the most promising additives for cement composites. Here, we propose a novel technique for producing few-layer graphene (FLG) that can fulfil the material demand for the construction industry. We produced specimens with different FLG loadings (from 0.05% to 1% by weight of cement) and curing processes (water and saturated air). The addition of FLG at 0.10% by weight of cement improved the flexural strength by 24% compared to the reference (bare) sample. Similarly, a 0.15% FLG loading by weight of cement led to an improvement in compressive strength of 29% compared to the reference specimen. The FLG flakes produced by our proposed methodology can open the door to their full exploitation in several cement mortar applications, such as cementitious composites with high durability, mechanical performance and high electrical conductivity for electrothermal applications.

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Development of nano cement concrete by top-down and bottom-up nanotechnology concept

Cited by 11 publications

References 72 publications

Nanotoxicology and Nanosafety: Safety-by-Design and Testing at a Glance

Nanotoxicology and Nanosafety: Safety-by-Design and Testing at a Glance

Evolution and Recent Scenario of Nanotechnology in Agriculture and Food Industries

Few-Layers Graphene-Based Cement Mortars: Production Process and Mechanical Properties

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