Evaluating the effect of dispersing techniques of graphene nanoplatelets in natural hydraulic lime mortar

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00385313" target="_blank" >RIV/68407700:21110/25:00385313 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/5.0286304" target="_blank" >http://dx.doi.org/10.1063/5.0286304</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0286304" target="_blank" >10.1063/5.0286304</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluating the effect of dispersing techniques of graphene nanoplatelets in natural hydraulic lime mortar

Popis výsledku v původním jazyce

The properties of carbon-based nanomaterials enable their application in a wide variety of medical or industrial fields. In material science, carbon nanomaterials were commonly incorporated into the cement matrix in the form of graphene or carbon nanotubes. However, the preparation and incorporation technique of nanomaterials is crucial for the correct use of all enhancing properties of this type of material. Because of the small size, nanomaterials tend to form clumps and clusters due to small Van der Waals forces. These clusters form weak points in the material matrix and may cause small mechanical strength of the material. With regard to these features, the effect of different dispersing techniques and dispersion-enhancing agents have been analyzed in this paper. The effectiveness of dispersing methods and chemical agents supporting stability of dispersion prior to the sample mixing was evaluated on UV-light absorption principle. The impact of chosen dispersing methods on structural and mechanical properties was studied on hardened mortar samples. Regardless of the chemicals used, the best dispersion of nanoadditive was achieved in water alone using an ultrasonic bath. However, the high content of nanoadditive as well as use of noncompatible dispersing agent even in a small amount worsen the mechanical performance of the material due to the low dispersion stability.

Název v anglickém jazyce

Evaluating the effect of dispersing techniques of graphene nanoplatelets in natural hydraulic lime mortar

Popis výsledku anglicky

The properties of carbon-based nanomaterials enable their application in a wide variety of medical or industrial fields. In material science, carbon nanomaterials were commonly incorporated into the cement matrix in the form of graphene or carbon nanotubes. However, the preparation and incorporation technique of nanomaterials is crucial for the correct use of all enhancing properties of this type of material. Because of the small size, nanomaterials tend to form clumps and clusters due to small Van der Waals forces. These clusters form weak points in the material matrix and may cause small mechanical strength of the material. With regard to these features, the effect of different dispersing techniques and dispersion-enhancing agents have been analyzed in this paper. The effectiveness of dispersing methods and chemical agents supporting stability of dispersion prior to the sample mixing was evaluated on UV-light absorption principle. The impact of chosen dispersing methods on structural and mechanical properties was studied on hardened mortar samples. Regardless of the chemicals used, the best dispersion of nanoadditive was achieved in water alone using an ultrasonic bath. However, the high content of nanoadditive as well as use of noncompatible dispersing agent even in a small amount worsen the mechanical performance of the material due to the low dispersion stability.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings 3315

ISBN

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ISSN

1551-7616

e-ISSN

1551-7616

Počet stran výsledku

4

Strana od-do

"060001-1"-"060001-4"

Název nakladatele

AIP Publishing, APL, the American Institute of Physics

Místo vydání

Melville, NY

Místo konání akce

Heraklion

Datum konání akce

11. 9. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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