Mikromechanická predikce elastických vlastností hydratace cementové pasty založená na mikrostruktuře

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F06%3A01122616" target="_blank" >RIV/68407700:21110/06:01122616 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure-based Micromechanical Prediction of Elastic Properties in Hydrating Cement Paste

Popis výsledku v původním jazyce

Elastic properties of hydrating cement paste can be successfully predicted by combination of the hydration model, percolation theory and micromechanical analysis. Reconstruction of hydrating microstructure is based on the 3D digital NIST model of cementhydration, which is enhanced for the prediction of two C&#8211;S&#8211;H types. Chemical phases in a percolated microstructure served as an input in a two-level analytical or one-level 3D FEM or FFT elastic homogenization. Special mesh generation for thepercolated microstructure is discussed as well as its numerical implementation. Good results from FEM and FFT were found for the size of the representative volume element of 50&#195;&#8212;50&#195;&#8212;50 &#956;m, considering water-to-cement ratio inthe range from 0.25 to 0.5. While good predictions in well-hydrated cement pastes were obtained for both analytical and numerical approaches, numerical homogenization was found more accurate and versatile for the whole hydration tim

Název v anglickém jazyce

Microstructure-based Micromechanical Prediction of Elastic Properties in Hydrating Cement Paste

Popis výsledku anglicky

Elastic properties of hydrating cement paste can be successfully predicted by combination of the hydration model, percolation theory and micromechanical analysis. Reconstruction of hydrating microstructure is based on the 3D digital NIST model of cementhydration, which is enhanced for the prediction of two C&#8211;S&#8211;H types. Chemical phases in a percolated microstructure served as an input in a two-level analytical or one-level 3D FEM or FFT elastic homogenization. Special mesh generation for thepercolated microstructure is discussed as well as its numerical implementation. Good results from FEM and FFT were found for the size of the representative volume element of 50&#195;&#8212;50&#195;&#8212;50 &#956;m, considering water-to-cement ratio inthe range from 0.25 to 0.5. While good predictions in well-hydrated cement pastes were obtained for both analytical and numerical approaches, numerical homogenization was found more accurate and versatile for the whole hydration tim

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Cement and Concrete Research

ISSN

0008-8846

e-ISSN

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Svazek periodika

36

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

1708-1718

Kód UT WoS článku

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EID výsledku v databázi Scopus

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