Influence of Graphite Oxide Addition on the Properties of Magnesium Oxychloride Cement Composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920315" target="_blank" >RIV/60461373:22310/20:43920315 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1757-899X/960/2/022080/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/960/2/022080/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/960/2/022080" target="_blank" >10.1088/1757-899X/960/2/022080</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Graphite Oxide Addition on the Properties of Magnesium Oxychloride Cement Composites

Popis výsledku v původním jazyce

Magnesium oxychloride cement (MOC) is considered as an eco-friendly construction material that is used in industrial as well as in residential applications thanks to its better performance in comparison with Portland cement (PC). Magnesium oxychloride cement composites, formed during the reaction between light burned magnesium oxide powder and magnesium chloride solution, belong to nonhydraulic materials and offer the advantage of high early strength and low porosity. These performances could, however, be further improved by incorporating of selected nanomaterials. This paper therefore presents an experimental investigation of magnesium oxychloride cement paste with graphite oxide admixture. The chemical composition of raw light burned magnesium oxide powder was analysed by X-Ray Fluorescence (XRF) and the morphology of graphite oxide was characterized using High Resolution Transmission Electron Microscopy (HR-TEM). Graphite oxide (GO) was added into the mixture in a concentration of 0.5 wt %. Subsequently, the influence of GO on the properties of hardened MOC paste was analysed in terms of its bulk density, specific density, open porosity and compressive and flexural strength measurement. The characterisation of studied pastes using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis was done as well. It was found that the presence of GO significantly enhanced the flexural strength, decreased the open porosity and slightly improved the compressive strength compared to the plain MOC paste. The obtained results suggest that with the addition of graphite oxide to magnesium oxychloride cement MOC-based nanocomposites intended for civil engineering can be developed. These are characterized by high strength and low porosity which is particularly important for reduction of moisture related damage.

Název v anglickém jazyce

Influence of Graphite Oxide Addition on the Properties of Magnesium Oxychloride Cement Composites

Popis výsledku anglicky

Magnesium oxychloride cement (MOC) is considered as an eco-friendly construction material that is used in industrial as well as in residential applications thanks to its better performance in comparison with Portland cement (PC). Magnesium oxychloride cement composites, formed during the reaction between light burned magnesium oxide powder and magnesium chloride solution, belong to nonhydraulic materials and offer the advantage of high early strength and low porosity. These performances could, however, be further improved by incorporating of selected nanomaterials. This paper therefore presents an experimental investigation of magnesium oxychloride cement paste with graphite oxide admixture. The chemical composition of raw light burned magnesium oxide powder was analysed by X-Ray Fluorescence (XRF) and the morphology of graphite oxide was characterized using High Resolution Transmission Electron Microscopy (HR-TEM). Graphite oxide (GO) was added into the mixture in a concentration of 0.5 wt %. Subsequently, the influence of GO on the properties of hardened MOC paste was analysed in terms of its bulk density, specific density, open porosity and compressive and flexural strength measurement. The characterisation of studied pastes using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis was done as well. It was found that the presence of GO significantly enhanced the flexural strength, decreased the open porosity and slightly improved the compressive strength compared to the plain MOC paste. The obtained results suggest that with the addition of graphite oxide to magnesium oxychloride cement MOC-based nanocomposites intended for civil engineering can be developed. These are characterized by high strength and low porosity which is particularly important for reduction of moisture related damage.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

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

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Conference Series: Materials Science and Engineering

ISBN

—

ISSN

1757-8981

e-ISSN

—

Počet stran výsledku

6

Strana od-do

022080

Název nakladatele

IOP Publishing

Místo vydání

Bristol

Místo konání akce

Praha

Datum konání akce

15. 6. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—