Effect of nanoadditive dispersing method on properties of natural hydraulic lime-based mortar

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00375597" target="_blank" >RIV/68407700:21110/24:00375597 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0210378" target="_blank" >https://doi.org/10.1063/5.0210378</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0210378" target="_blank" >10.1063/5.0210378</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of nanoadditive dispersing method on properties of natural hydraulic lime-based mortar

Popis výsledku v původním jazyce

In order to meet increasing requirements on mechanical strength of lime-based materials, modification by carbon-based nanoadditives seems as the proper enhancement strategy. However, the incorporation technique preventing clusters formation and ensuring proper distribution in fresh mixture is crucial for effective application of nanomaterials in production of construction composites. On this account, the dispersing effect of surfactant combined with antifoaming agent and its impact on mortars based on natural hydraulic lime and enhanced with multiwalled-carbon nanotubes (CNTs), have been analyzed. Dispersing solutions have been tested on foam formation, foam stability and UV-light absorption to evaluate dispersing effect. Impact of the used dispersing solution on hardened mortar samples was evaluated based on the assessment of basic structural and mechanical parameters. While CNTs dispersed in water starts to form clusters immediately after mixing stops, the dispersion stability was greatly enhanced with use of surfactant. Onthe other hand, surfactant stabilized air bubbles formed during mixing of mortars and resulted in an increased porosity accompanied by a low mechanical strength. The best results were achieved with the use of surfactant increasing dispersion effect in combination with the antifoaming agent which effectively destabilized formed air bubbles.

Název v anglickém jazyce

Effect of nanoadditive dispersing method on properties of natural hydraulic lime-based mortar

Popis výsledku anglicky

In order to meet increasing requirements on mechanical strength of lime-based materials, modification by carbon-based nanoadditives seems as the proper enhancement strategy. However, the incorporation technique preventing clusters formation and ensuring proper distribution in fresh mixture is crucial for effective application of nanomaterials in production of construction composites. On this account, the dispersing effect of surfactant combined with antifoaming agent and its impact on mortars based on natural hydraulic lime and enhanced with multiwalled-carbon nanotubes (CNTs), have been analyzed. Dispersing solutions have been tested on foam formation, foam stability and UV-light absorption to evaluate dispersing effect. Impact of the used dispersing solution on hardened mortar samples was evaluated based on the assessment of basic structural and mechanical parameters. While CNTs dispersed in water starts to form clusters immediately after mixing stops, the dispersion stability was greatly enhanced with use of surfactant. Onthe other hand, surfactant stabilized air bubbles formed during mixing of mortars and resulted in an increased porosity accompanied by a low mechanical strength. The best results were achieved with the use of surfactant increasing dispersion effect in combination with the antifoaming agent which effectively destabilized formed air bubbles.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA20-01866S" target="_blank" >GA20-01866S: Vysocehodnotné kompozity obsahující vrstevnaté nanomateriály</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings

ISBN

—

ISSN

1551-7616

e-ISSN

1551-7616

Počet stran výsledku

4

Strana od-do

"070004-1"-"070004-4"

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Heraklion, Kréta

Datum konání akce

19. 9. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001244923000076