Magnesium oxychloride cement-based composites with fly ash admixture

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnesium oxychloride cement-based composites with fly ash admixture

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Magnesium oxychloride cement-based composites with fly ash admixture

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA19-00262S" target="_blank" >GA19-00262S: Kompozity na bázi reaktivního hořečnatého cementu s vybranými příměsemi a aditivy</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

20th International Multidisciplinary Scientific GeoConference SGEM 2020

ISBN

978-619-7603-12-5

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

6

Strana od-do

389-394

Název nakladatele

International Multidisciplinary Scientific GeoConference SGEM

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

16. 8. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—