Coupled Water and Salt Transport in Porous Materials: Rapid Determination of a Varying Diffusion Coefficient from Experimental Data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00223638" target="_blank" >RIV/68407700:21110/14:00223638 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11242-014-0386-4" target="_blank" >http://dx.doi.org/10.1007/s11242-014-0386-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11242-014-0386-4" target="_blank" >10.1007/s11242-014-0386-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coupled Water and Salt Transport in Porous Materials: Rapid Determination of a Varying Diffusion Coefficient from Experimental Data

Popis výsledku v původním jazyce

A direct method for an accurate and rapid evaluation of a varying salt diffusion coefficient, D, from experimental data is proposed for a coupled water and salt transport in porous materials. The evaluation uses data on the moisture and salt concentration profiles and is based on a formula obtained from the Boltzmann-Matano method. The coupled transport is described by the diffusion-advection model of Bear and Bachmat. A simple expression for D in the center of the concentration interval is deduced fromthe formula to provide a rapid estimate on D. Possible extensions of this analytical approach are pointed out, suggesting that it can serve as a convenient general tool in engineering calculations. The theoretical results are applied to a laboratory experiment in which a coupled moisture and chloride transport had been investigated in a lime plaster, and the chloride diffusion coefficient had been obtained numerically in dependence on the chloride concentration. The agreement with the n

Název v anglickém jazyce

Coupled Water and Salt Transport in Porous Materials: Rapid Determination of a Varying Diffusion Coefficient from Experimental Data

Popis výsledku anglicky

A direct method for an accurate and rapid evaluation of a varying salt diffusion coefficient, D, from experimental data is proposed for a coupled water and salt transport in porous materials. The evaluation uses data on the moisture and salt concentration profiles and is based on a formula obtained from the Boltzmann-Matano method. The coupled transport is described by the diffusion-advection model of Bear and Bachmat. A simple expression for D in the center of the concentration interval is deduced fromthe formula to provide a rapid estimate on D. Possible extensions of this analytical approach are pointed out, suggesting that it can serve as a convenient general tool in engineering calculations. The theoretical results are applied to a laboratory experiment in which a coupled moisture and chloride transport had been investigated in a lime plaster, and the chloride diffusion coefficient had been obtained numerically in dependence on the chloride concentration. The agreement with the n

Druh

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

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Transport in Porous Media

ISSN

0169-3913

e-ISSN

—

Svazek periodika

105

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

597-610

Kód UT WoS článku

000344612700008

EID výsledku v databázi Scopus

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