Publication detail
Graphene- and Graphite Oxide-Reinforced Magnesium Oxychloride Cement Composites for the Construction Use
LAUERMANNOVÁ, A. LOJKA, M. PAVLÍKOVÁ, M. PIVÁK, A. ZÁLESKÁ, M. PAVLÍK, Z. ZMEŠKAL, O. JANKOVSKÝ, O.
Original Title
Graphene- and Graphite Oxide-Reinforced Magnesium Oxychloride Cement Composites for the Construction Use
Type
journal article in Web of Science
Language
English
Original Abstract
Graphene and graphite oxide reinforced magnesium oxychloride cement (MOC) pastes were researched. To produce MOC pastes, the light-burnt magnesium oxide was added and dispersed in the magnesium chloride solution. The graphene powder, graphite oxide powder, and their combination were incorporated in the solution. The total amount of the nano additives was 0.5 % by the weight of the magnesium oxychloride binder. The morphology and microstructure of the hardened materials were studied using scanning electron microscopy (SEM). The phase composition of precipitated MOC-based products was investigated using X ray diffraction (XRD). The macrostructural parameters of the composites such as bulk density, specific density, and open porosity were evaluated. Mechanical strength and stiffness were analyzed by the measurement of flexural and compressive strength and dynamic elastic modulus. The electrical properties were examined by the use of impedance spectroscopy (IS). From the experimental results the model of the transport of electric charge in researched materials dispersion was estimated. The use of graphene- and graphite oxide-reinforcement of MOC matrix gave highly dense materials of low porosity, high mechanical resistance, whereas the used nano-additives enabled the produce of composites of high strength efficiency index. The addition of graphene particles and the formation of graphite agglomerates significantly decreased electrical resistivity of the MOC matrix which was originally characterized by low electrical conductivity.
Keywords
Graphene, Composites, Magnesium oxychlorides, Multiwalled Carbon Nanotubes, metal-Ionsmechanical-Properties, doped Graphene, silica Fume, adsorption, phase, water, reduction, hydration
Authors
LAUERMANNOVÁ, A.; LOJKA, M.; PAVLÍKOVÁ, M.; PIVÁK, A.; ZÁLESKÁ, M.; PAVLÍK, Z.; ZMEŠKAL, O.; JANKOVSKÝ, O.
Released
23. 5. 2021
Publisher
University of Chemistry and Technology, Prague
Location
PRAGUE 6
ISBN
1804-5847
Periodical
CERAMICS-SILIKATY
Year of study
65
Number
1
State
Czech Republic
Pages from
38
Pages to
47
Pages count
10
URL
Full text in the Digital Library
BibTex
@article{BUT177262,
author="Anna-Marie {Lauermannová} and Michal {Lojka} and Milena {Pavlíková} and Adam {Pivák} and Martina {Záleská} and Zbyšek {Pavlík} and Oldřich {Zmeškal} and Ondřej {Jankovský}",
title="Graphene- and Graphite Oxide-Reinforced Magnesium Oxychloride Cement Composites for the Construction Use",
journal="CERAMICS-SILIKATY",
year="2021",
volume="65",
number="1",
pages="38--47",
doi="10.13168/cs.2020.0040",
issn="1804-5847",
url="https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1388"
}