Ultra-high strength multicomponent composites based on reactive magnesia: Tailoring of material properties by addition of 1D and 2D carbon nanoadditives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924260" target="_blank" >RIV/60461373:22310/22:43924260 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/22:00355321

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S2352710222001358?token=5D3491A0DF694D75F1DDE7AD079C1C10A0920A32103D09528B672335057F0E46D621C15DFDE518970F55F2DC01048BC3&originRegion=eu-west-1&originCreation=20230104130512" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S2352710222001358?token=5D3491A0DF694D75F1DDE7AD079C1C10A0920A32103D09528B672335057F0E46D621C15DFDE518970F55F2DC01048BC3&originRegion=eu-west-1&originCreation=20230104130512</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jobe.2022.104122" target="_blank" >10.1016/j.jobe.2022.104122</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultra-high strength multicomponent composites based on reactive magnesia: Tailoring of material properties by addition of 1D and 2D carbon nanoadditives

Popis výsledku v původním jazyce

In this study a novel high-performance construction composites based on MOC (magnesium oxychloride cement) co-doped by graphene and multi-walled carbon nanotubes were developed. These materials were studied in order to create a possible alternative to the commonly used Portland cement (PC) with sufficient water resistance and very good mechanical properties. The influence of the content of the carbon-based nanoadditives on the mechanical, macro-and micro structural, chemical and physical properties was analyzed. Among the analytical methods, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, high-resolution transmission electron microscopy, Fourier-transform infrared spectroscopy and others were used. Overall, three groups of samples were prepared, one reference and two containing the combined dopants. The combined effect of the 1D and 2D carbon nanomaterials resulted in highly increased flexural strength (up to 42.1%), compressive strength (up to 18.2%) and decrease in the water absorption coefficient (up to 48.2%), which is crucial for this type of binder. As the composite adopted the properties of the single dopants, the thermal conductivity also increased. The overall enhancement of the MOC matrix is connected to the significant drop in porosity when the carbon-based nanoadditives are used. The obtained results might show a potential route in the development of high-performance environmentally sustainable alternatives to PC.

Název v anglickém jazyce

Ultra-high strength multicomponent composites based on reactive magnesia: Tailoring of material properties by addition of 1D and 2D carbon nanoadditives

Popis výsledku anglicky

In this study a novel high-performance construction composites based on MOC (magnesium oxychloride cement) co-doped by graphene and multi-walled carbon nanotubes were developed. These materials were studied in order to create a possible alternative to the commonly used Portland cement (PC) with sufficient water resistance and very good mechanical properties. The influence of the content of the carbon-based nanoadditives on the mechanical, macro-and micro structural, chemical and physical properties was analyzed. Among the analytical methods, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, high-resolution transmission electron microscopy, Fourier-transform infrared spectroscopy and others were used. Overall, three groups of samples were prepared, one reference and two containing the combined dopants. The combined effect of the 1D and 2D carbon nanomaterials resulted in highly increased flexural strength (up to 42.1%), compressive strength (up to 18.2%) and decrease in the water absorption coefficient (up to 48.2%), which is crucial for this type of binder. As the composite adopted the properties of the single dopants, the thermal conductivity also increased. The overall enhancement of the MOC matrix is connected to the significant drop in porosity when the carbon-based nanoadditives are used. The obtained results might show a potential route in the development of high-performance environmentally sustainable alternatives to PC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

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

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Building Engineering

ISSN

2352-7102

e-ISSN

2352-7102

Svazek periodika

50

Číslo periodika v rámci svazku

červen

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

nestrankovano

Kód UT WoS článku

000772807700001

EID výsledku v databázi Scopus

2-s2.0-85123821361