Validation of micromechanical model for prediction of ITZ thickness of high-strength concrete containing secondary cementitious materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00336655" target="_blank" >RIV/68407700:21110/20:00336655 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.4028/www.scientific.net/MSF.995.143" target="_blank" >https://doi.org/10.4028/www.scientific.net/MSF.995.143</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.995.143" target="_blank" >10.4028/www.scientific.net/MSF.995.143</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Validation of micromechanical model for prediction of ITZ thickness of high-strength concrete containing secondary cementitious materials

Popis výsledku v původním jazyce

The mechanical properties of a cementitious composite are strongly affected by interfacial transition zone (ITZ) between the matrix and the aggregates, mainly by its strength and thickness. A micromechanical model based on Mori-Tanaka scheme coupled with an estimation of deviatoric stress in ITZ was developed for evaluation of the effect of selected secondary cementitious materials (SCMs – silica fume, fly ash and metakaolin) on the properties of ITZ in high-strength concrete (HSC). The model was validated by means of comparison of predicted ITZ thickness with direct ITZ thickness measurements performed by a combination of scanning electron microscopy and grid nanoindentation. Very good agreement between the theoretical and experimental results was reached, therefore the developed micromechanical model can be used for further research and optimization of HSC containing SCMs. Silica fume was determined to be the most efficient supplementary cementitious material from the point of view of ITZ thickness reduction.

Název v anglickém jazyce

Validation of micromechanical model for prediction of ITZ thickness of high-strength concrete containing secondary cementitious materials

Popis výsledku anglicky

The mechanical properties of a cementitious composite are strongly affected by interfacial transition zone (ITZ) between the matrix and the aggregates, mainly by its strength and thickness. A micromechanical model based on Mori-Tanaka scheme coupled with an estimation of deviatoric stress in ITZ was developed for evaluation of the effect of selected secondary cementitious materials (SCMs – silica fume, fly ash and metakaolin) on the properties of ITZ in high-strength concrete (HSC). The model was validated by means of comparison of predicted ITZ thickness with direct ITZ thickness measurements performed by a combination of scanning electron microscopy and grid nanoindentation. Very good agreement between the theoretical and experimental results was reached, therefore the developed micromechanical model can be used for further research and optimization of HSC containing SCMs. Silica fume was determined to be the most efficient supplementary cementitious material from the point of view of ITZ thickness reduction.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-19463S" target="_blank" >GA17-19463S: Analýza závislostí mezi mikrostrukturou a makroskopickými vlastnostmi ultravysokohodnotných betonů</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

Frontiers of Composite Materials IV - Selected peer-reviewed papers from 4th International Conference on Frontiers of Composite Materials (ICFCM 2019) and 4th International Conference on Energy Engineering and Smart Materials (ICEESM 2019)

ISBN

978-3-0357-1596-5

ISSN

0255-5476

e-ISSN

—

Počet stran výsledku

6

Strana od-do

143-148

Název nakladatele

Transtech Publications

Místo vydání

Zürich

Místo konání akce

Dublin

Datum konání akce

30. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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