MOC-Diatomite Composites Filled with Multi-Walled Carbon Nanotubes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00351126" target="_blank" >RIV/68407700:21110/21:00351126 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/21:43922334

Result on the web

<a href="https://doi.org/10.3390/ma14164576" target="_blank" >https://doi.org/10.3390/ma14164576</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma14164576" target="_blank" >10.3390/ma14164576</a>

Result language

angličtina

Original language name

MOC-Diatomite Composites Filled with Multi-Walled Carbon Nanotubes

Original language description

The studies aimed at magnesium oxychloride cement (MOC) composites became recently fairly widespread, because of MOC’s excellent mechanical properties and environmental sustainability. Numerous fillers, admixtures and nano-dopants were studied in order to improve the overall performance of MOC-based derivatives. Some of them exhibited specific flaws, such as a tendency to aggregate, increase in porosity, aeration of the composite matrix, depreciation in the water resistance and mechanical strength, etc. In the manuscript, MOC-based composites doped by multi-walled carbon nanotubes (MWCNTs) are designed and tested. To modify the final properties of composites, diatomite was admixed as partial substitution of MgO, which was used in the composition of the researched material in excess, i.e. the majority of MgO constituted part of MOC and the rest served as fine filler. The composites were subjected to the broad experimental campaign that covered SEM, EDS, HR-TEM, XRD, OM and STA-MS. For 28-days hardened samples, macro- and microstructural parameters, mechanical properties, hygric and thermal characteristics were experimentally assessed. The incorporation of MWCNTs and diatomite led to the significant enhancement of composites’ compactness, mechanical strength and stiffness, and reduction of water absorption and rate of water imbibition. The thermal properties of the enriched MOC com-posites yielded interesting values and provided information for future modification of thermal performance of MOC composites with respect to their specific use in practice, e.g. in passive moderation of indoor climate. The combination of MWCNTs and diatomite represents a valuable modification of the MOC matrix and can be further exploited in the design and development of advanced building materials and components.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GA20-01866S" target="_blank" >GA20-01866S: High-performance composites containing layered nanomaterials</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Volume of the periodical

14

Issue of the periodical within the volume

16

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

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UT code for WoS article

000689450000001

EID of the result in the Scopus database

2-s2.0-85113715013