Limitations of FEM modelling of chloride diffusion when considering different parameters of binary and ternary concrete mixtures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F20%3A10246575" target="_blank" >RIV/61989100:27120/20:10246575 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.bozpe.bud.pcz.pl/Limitations-of-FEM-modelling-of-chloride-diffusion-nwhen-considering-different-parameters,133218,0,2.html" target="_blank" >http://www.bozpe.bud.pcz.pl/Limitations-of-FEM-modelling-of-chloride-diffusion-nwhen-considering-different-parameters,133218,0,2.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17512/bozpe.2020.2.07" target="_blank" >10.17512/bozpe.2020.2.07</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Limitations of FEM modelling of chloride diffusion when considering different parameters of binary and ternary concrete mixtures

Popis výsledku v původním jazyce

The numerical modelling of chloride diffusion in concrete structures requires an appropriate description of input parameters. The main inputs for the model are the diffusion coefficient of concrete and derived aging factor. The model itself can be susceptible to the values of these parameters because of the size of the finite elements and size of the time step. Due to the potential use in probabilistic calculations, which requires millions of simulations, it is desirable to create a highly optimized model. It is important to pay attention to the accuracy of the calculation, but also to its calculation time. The presented results show the possible limits of the finite element model of the diffusion in a concrete structure. This is demonstrated on the reference ordinary Portland cement mixture and 32 various binary and ternary concrete mixtures, which show a significant effect of different diffusion coefficients and aging factors on the overall convergence. This study provides guidance on which extreme material parameters, out of the potential range, may adversely affect model results.

Název v anglickém jazyce

Limitations of FEM modelling of chloride diffusion when considering different parameters of binary and ternary concrete mixtures

Popis výsledku anglicky

The numerical modelling of chloride diffusion in concrete structures requires an appropriate description of input parameters. The main inputs for the model are the diffusion coefficient of concrete and derived aging factor. The model itself can be susceptible to the values of these parameters because of the size of the finite elements and size of the time step. Due to the potential use in probabilistic calculations, which requires millions of simulations, it is desirable to create a highly optimized model. It is important to pay attention to the accuracy of the calculation, but also to its calculation time. The presented results show the possible limits of the finite element model of the diffusion in a concrete structure. This is demonstrated on the reference ordinary Portland cement mixture and 32 various binary and ternary concrete mixtures, which show a significant effect of different diffusion coefficients and aging factors on the overall convergence. This study provides guidance on which extreme material parameters, out of the potential range, may adversely affect model results.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Construction of Optimized Energy Potential

ISSN

2299-8535

e-ISSN

2544-963X

Svazek periodika

Neuveden

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

9

Strana od-do

53-61

Kód UT WoS článku

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EID výsledku v databázi Scopus

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