Magnesium oxychloride cement-based composites with fly ash admixture

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00346143" target="_blank" >RIV/68407700:21110/20:00346143 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.5593/sgem2020/6.1/s26.051" target="_blank" >https://doi.org/10.5593/sgem2020/6.1/s26.051</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2020/6.1/s26.051" target="_blank" >10.5593/sgem2020/6.1/s26.051</a>

Result language

angličtina

Original language name

Magnesium oxychloride cement-based composites with fly ash admixture

Original language description

Magnesium oxychloride (MOC) cement-based composites were studied in the presented paper. As filler, silica sand was used and partially replaced with fly ash from coal combustion. First, the chemical composition and basic physical properties of raw materials were tested. For the hardened composites, bulk density, specific density, and total open porosity were measured. Among mechanical parameters, flexural and compressive strengths were determined. The thermal performance of composites was studied using a transient impulse method and the assessed parameters were thermal conductivity, thermal diffusivity and volumetric heat capacity. The workability of fresh composite mixtures was obtained using a flow table test. The use of fly ash led to the significant decrease in porosity compared to the control materials with silica sand as only filler which ensures the durability of examined materials in the sense of moisture related damage. The mechanical parameters of all developed materials were high. The compressive strength was slightly improved by the 5% replacement of sand. On the other hand, the flexural strength was reduced for fly ash-modified composites. It clearly proved assumption of filler function of fly ash. The thermal insulation properties remained almost unaffected by fly ash incorporation. It was concluded, the developed composites represent alternative low-carbon materials possessing interesting functional properties for construction practice. Moreover, the use of fly ash can be considered as an environmentally friendly solution for production of sustainable building materials.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA19-00262S" target="_blank" >GA19-00262S: Reactive magnesia cements-based composites with selected admixtures and additives</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Article name in the collection

20th International Multidisciplinary Scientific GeoConference SGEM 2020

ISBN

978-619-7603-12-5

ISSN

1314-2704

e-ISSN

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Number of pages

6

Pages from-to

389-394

Publisher name

International Multidisciplinary Scientific GeoConference SGEM

Place of publication

Sofia

Event location

Albena

Event date

Aug 16, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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